CN117073096A

CN117073096A - Solar condensation frequency division-crystallization energy storage combined heat pump air conditioning system and control method

Info

Publication number: CN117073096A
Application number: CN202311044923.2A
Authority: CN
Inventors: 张承虎; 闫李; 林子琛; 师熙隆
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2023-08-18
Filing date: 2023-08-18
Publication date: 2023-11-17

Abstract

The invention provides a solar concentrating frequency division-crystallization energy storage combined heat pump air conditioning system and a control method, and belongs to the technical field of clean energy utilization. In order to solve the problems of low energy utilization rate, large energy supply fluctuation and higher operation cost when the conventional solar photo-thermal system and the conventional solar photoelectric system are applied to building energy supply. The invention utilizes solar energy heat collection quantity to drive the crystallization energy storage subsystem and the absorption type circulation to jointly operate so as to realize daytime heat supply, utilizes solar energy storage quantity to drive the mechanical compression circulation, and thermally couples the mechanical compression circulation and the absorption type circulation so as to ensure that the lithium bromide crystallization energy storage subsystem releases energy so as to realize nighttime heat supply; or the mechanical compression and circulation refrigeration is driven by the solar energy storage energy, the commercial power is supplemented when the electric quantity is insufficient, and the solar energy storage subsystem is complemented with the lithium bromide crystal energy storage subsystem only for refrigeration at night, so that the efficient utilization of solar energy, the energy saving of buildings and the stable refrigeration throughout the day are realized.

Description

Solar condensation frequency division-crystallization energy storage combined heat pump air conditioning system and control method

Technical Field

The invention relates to the technical field of clean energy utilization, in particular to a solar concentrating frequency division-crystallization energy storage combined heat pump air conditioning system and a control method.

Background

To balance the energy supply and energy demand, clean energy has become a major trend to replace traditional energy and build sustainable energy structures.

Solar energy is used as the most abundant clean energy source, and has great development potential. The existing solar energy utilization mode is mainly divided into photo-thermal utilization and photoelectric utilization, and the solar water heater or the photovoltaic power generation is combined with building energy supply for building equipment, but the problems of low energy utilization rate and high energy supply fluctuation exist, because the solar energy is converted into low temperature and unstable heat collection temperature due to low heat flux of the solar energy falling onto the surface of the heat collector and is easily influenced by weather during photo-thermal utilization, the solar energy utilization degree is lower, and a large part of sunlight cannot be effectively utilized due to the spectral response characteristic of the photovoltaic cell and is converted into heat energy to be dissipated into the air or the temperature of the battery to be increased during the photoelectric utilization, so that great energy loss is caused and the power generation efficiency is influenced.

The existing patent is such as a solar indoor cold and hot integrated system (application number: CN 201410200781.9), organically combines a solar lithium bromide absorption refrigerating unit, an air source heat pump and a solar heat collector, and switches different working modes through valves so as to meet the refrigerating and heating requirements of a building. Mainly uses solar energy as a driving heat source, converts the solar energy into heat energy through a solar heat pipe collector, and generates hot water to drive the whole system to work. However, the sources of refrigerating or heating energy in the above patent are all solar collectors, and the solar energy density received by the solar collectors is very low due to the dispersibility of solar energy, the utilization rate of solar energy is still low, and the lithium bromide absorption refrigeration operation needs to absorb heat from hot water all the day, so that the refrigeration is affected when the solar energy is insufficient, and the lithium bromide absorption refrigeration operation has instability.

The prior patent such as cold and hot energy storage type solar air conditioning device (application number: CN 201310183854.3) comprises a solar photovoltaic panel set, a power inverter, an electric refrigerating unit, an electric heating unit, a heat storage medium circulation box unit, a cold energy storage medium circulation box unit, an intelligent centralized control unit, an air conditioning working medium circulation pump, an adjusting control piping unit and an indoor air temperature regulator unit, wherein the electric refrigerating unit and the electric heating unit are connected with or arranged in corresponding cold and heat storage medium circulation box unit pipelines. Although the patent can switch the heating or air conditioning functions through intelligent control according to indoor load demands, the realization of the functions only utilizes the photovoltaic power generation amount, and the system still belongs to an independent photoelectric utilization system, so that a large part of solar energy loss can be caused and the normal power generation of the photovoltaic panel is influenced.

Therefore, how to reasonably plan the coupling mode of the solar photo-thermal photoelectric device when the solar photo-thermal photoelectric device is applied to heating or air conditioning of a building, and improving the solar utilization rate and realizing stable and clean energy supply of the building become the research content widely studied at present.

Disclosure of Invention

The invention aims to solve the technical problems that:

in order to solve the problems of low energy utilization rate, large energy supply fluctuation and higher operation cost when the conventional solar photo-thermal system and the conventional solar photoelectric system are applied to building energy supply.

The invention adopts the technical scheme for solving the technical problems:

the invention provides a solar concentrating frequency division-crystallization energy storage heat pump air conditioning system, which comprises a solar concentrating frequency division subsystem, a lithium bromide crystallization energy storage subsystem, an absorption cycle, a mechanical compression cycle and a preheating cycle,

the solar concentrating frequency dividing subsystem is used for collecting heat after dividing frequency of solar energy and converting the heat into electric energy;

the lithium bromide crystallization energy storage subsystem comprises a crystallization heat storage tank, a solution cavity, a condensation cavity, a first spraying device, a second spraying device, a first hot water coil pipe, a second hot water coil pipe, a baffle plate, a second circulating pump, a third circulating pump and a fifth stop valve,

the crystallization heat storage tank is divided into a solution cavity and a condensation cavity by a partition plate, the solution cavity is used for filling lithium bromide solution, the condensation cavity is used for filling condensation water, a first hot water coil pipe and a second hot water coil pipe are respectively arranged in the solution cavity and the condensation cavity, and the upper end of the solution cavity is communicated with the upper end of the condensation cavity by a fifth stop valve; the inlet end and the outlet end of the first hot water coil pipe extend out of a solution cavity, the inlet end and the outlet end of the second hot water coil pipe extend out of a condensation cavity, the bottom of the solution cavity is connected with the inlet end of a second circulating pump, the outlet end of the second circulating pump is connected with a first spraying device in the solution cavity, the bottom of the condensation cavity is connected with the inlet end of a third circulating pump, and the outlet end of the third circulating pump is connected with a second spraying device in the condensation cavity;

The absorption cycle comprises a source side heat exchanger, a user side heat exchanger, a fourth circulating pump, a fifth circulating pump, a first high-position hot water pipeline, a first low-position hot water pipeline, a third stop valve, a fourth stop valve, a sixth stop valve, a seventh stop valve, an eighth stop valve and a ninth stop valve,

the inlet end of the fourth stop valve is connected with the outlet end of the first high-position hot water pipeline, the outlet pipeline of the sixth stop valve is connected with the inlet end of the user side heat exchanger after being converged with the outlet pipeline of the fourth stop valve, the user side heat exchanger is communicated with the user side air, the outlet end of the user side heat exchanger is connected with the inlet end of the fifth circulating pump, and the outlet end of the fifth circulating pump is respectively connected with the inlet end of the third stop valve and the inlet end of the seventh stop valve;

the inlet end of the ninth stop valve is connected with the outlet end of the first low-level hot water pipeline, the outlet end of the ninth stop valve is connected with the inlet end of the source side heat exchanger, the outlet end of the source side heat exchanger is connected with the inlet end of the fourth circulating pump, and the outlet end of the fourth circulating pump is connected with the inlet end of the eighth stop valve;

the mechanical compression cycle includes an evaporator, a compressor, a condenser and a throttle valve,

the outlet of the evaporator is connected with the inlet end of the compressor, the outlet end of the compressor is connected with the inlet end of the condenser, the outlet end of the condenser is connected with the inlet end of the throttle valve, the outlet end of the throttle valve is connected with the inlet end of the evaporator, and the evaporator is communicated with outdoor air;

The preheating cycle comprises a source side heat exchanger, a condenser and a sixth circulating pump,

the outlet end of the condenser is connected with the inlet end of the source side heat exchanger, the outlet end of the source side heat exchanger is connected with the inlet end of the sixth circulating pump, and the outlet end of the sixth circulating pump is connected with the inlet end of the condenser;

the solar concentrating and frequency dividing subsystem, the crystallization energy storage subsystem and the absorption type circulation room are connected with each other, the solar concentrating and frequency dividing subsystem, the crystallization energy storage subsystem and the absorption type circulation room comprise a first hot water coil, an outlet end of the first hot water coil is connected with an inlet end of a first stop valve and an inlet end of a first high-position hot water pipeline respectively, an outlet end of the first stop valve is connected with an inlet end of a heat collecting pipe in the solar concentrating and frequency dividing subsystem, an outlet end of the heat collecting pipe is connected with an inlet end of a water tank, an outlet end of the water tank is connected with an inlet end of a first circulating pump, an outlet end of the first circulating pump is connected with an inlet end of a second stop valve, and an outlet end of the second stop valve and an outlet end of a third stop valve are connected with an inlet end of the first hot water coil after being converged;

the outlet end of the third hot water main pipe is respectively connected with the inlet end of the first low-position hot water pipeline and the inlet end of the sixth stop valve, and the outlet end of the seventh stop valve and the outlet end of the eighth stop valve are connected with the inlet end of the second hot water coil pipe after being converged;

The solar concentrating frequency division subsystem is connected with the inlet end of the storage battery, the outlet end of the storage battery is connected with the inlet end of the inverter, and the outlet end of the inverter is respectively connected with the mains connection point and the compressor.

A control method of a solar concentrating frequency division-crystallization energy storage combined heat pump air conditioning system,

during daytime, the first stop valve, the second stop valve, the sixth stop valve and the seventh stop valve are in an open state, the third stop valve, the fourth stop valve, the eighth stop valve and the ninth stop valve are in a closed state,

the low-level hot water at the outlet of the first hot water coil pipe enters the heat collecting pipe through a first stop valve to be heated into high-level hot water, the high-level hot water is pumped by a first circulating pump to be filled with the first hot water coil pipe after passing through a water tank and a second stop valve, the lithium bromide solution is sprayed to the surface of the first hot water coil pipe through a first spraying device by a second circulating pump, the lithium bromide solution absorbs heat and continuously evaporates, concentrates and crystallizes, part of solar high-level energy is stored in a crystallization mode, a fifth stop valve is in an open state, water vapor generated by concentration of the solution enters a condensation water cavity from a solution cavity through a fifth stop valve, the water vapor contacts with the surface of a second hot water coil pipe with lower temperature, heat is released by condensation, water in the second hot water coil pipe enters a user side heat exchanger through a sixth stop valve to heat user side air, and the water after the temperature reduction of the fifth circulating pump is filled with the second hot water coil pipe through a seventh stop valve;

At night, the first stop valve, the second stop valve, the sixth stop valve and the seventh stop valve are in a closed state, the third stop valve, the fourth stop valve, the eighth stop valve and the ninth stop valve are in an open state,

the solar concentrating frequency division subsystem generates electricity, converts the electricity into alternating current through a storage battery and an inverter, then drives a compressor to operate, and is connected with mains supply from a mains supply contact to supplement the electricity when the electricity is insufficient, at the moment, mechanical compression circulation is started, refrigerant absorbs heat from outdoor air through an evaporator and then becomes low-temperature low-pressure refrigerant vapor, the refrigerant vapor is compressed through the compressor and becomes high-temperature high-pressure refrigerant vapor, the high-temperature high-pressure refrigerant vapor is discharged through a condenser to a preheating circulating water loop to be changed into high-temperature high-pressure refrigerant liquid, and finally the high-temperature low-pressure refrigerant liquid is changed into low-temperature low-pressure refrigerant liquid through a throttle valve and then returns to the evaporator; the preheated hot water enters the source side heat exchanger to release heat after being heated by the condenser, the preheated hot water is pumped back to the condenser by a sixth circulating pump after the temperature is reduced,

the water in the second hot water coil pipe enters the source side heat exchanger through a ninth stop valve to absorb heat from the preheating circulating water pipeline and then the temperature rises, and the fourth circulating pump pumps the water with the rising temperature to fill the second hot water coil pipe through an eighth stop valve; the third circulating pump pumps condensed water at the bottom of the condensed water cavity to spray to the surface of the second hot water coil pipe through the second spraying device, the condensed water is vaporized, the fifth stop valve is in an open state, water vapor generated by vaporization enters the solution cavity through the fifth stop valve and is absorbed by concentrated solution sprayed on the first hot water coil pipe, the concentration of the solution is reduced, crystallization and dissolution keep a concentration dynamic balance state, the hot water in the first hot water coil pipe is heated in an exothermic manner in the absorption process, the heated hot water enters the user side heat exchanger through the fourth stop valve to heat the air at the user side, and the water cooled by the fifth circulating pump is pumped back to the first hot water coil pipe through the third stop valve.

A solar concentrating frequency division-crystallization energy storage heat pump air conditioning system comprises a solar concentrating frequency division subsystem, a lithium bromide crystallization energy storage subsystem, an absorption cycle, a mechanical compression cycle and a cooling water cycle,

The absorption type circulation comprises a source side heat exchanger, a user side heat exchanger, a fourth circulating pump, a fifth circulating pump, a first high-position hot water pipeline, a first low-position hot water pipeline, a third stop valve, a fourth stop valve, a sixth stop valve, a seventh stop valve, an eighth stop valve and a ninth stop valve;

the inlet end of the fourth stop valve is connected with the outlet end of the first high-position hot water pipeline, the outlet end of the fourth stop valve is connected with the inlet end of the source side heat exchanger after being converged with the outlet end of the ninth stop valve, the outlet end of the source side heat exchanger is connected with the inlet end of the fourth circulating pump, the outlet end of the fourth circulating pump is respectively connected with the inlet end of the third stop valve and the inlet end of the eighth stop valve,

the inlet end of the sixth stop valve is connected with the outlet end of the first low-level hot water pipeline, the outlet end of the sixth stop valve is connected with the inlet end of the user side heat exchanger, the outlet end of the user side heat exchanger is connected with the inlet end of the fifth circulating pump, the user side heat exchanger is communicated with the user side air, and the outlet end of the fifth circulating pump is connected with the inlet end of the seventh stop valve;

the outlet of the evaporator is connected with the inlet end of the compressor, the outlet end of the compressor is connected with the inlet end of the condenser, the outlet end of the condenser is connected with the inlet end of the throttle valve, the outlet end of the throttle valve is connected with the inlet end of the evaporator, and the evaporator is communicated with the air at the user side;

The cooling water circulation comprises a source side heat exchanger, a condenser and a cooling tower,

the inlet end of the condenser is connected with the outlet end of the cooling tower, the outlet end of the condenser is connected with the inlet end of the source side heat exchanger, and the outlet end of the source side heat exchanger is connected with the inlet end of the cooling tower;

the outlet end of the third hot water main pipe is respectively connected with the inlet end of the first low-position hot water pipeline and the inlet end of the ninth stop valve, and the outlet end of the seventh stop valve and the outlet end of the eighth stop valve are connected with the inlet end of the second hot water coil pipe after being converged;

during daytime, the first stop valve, the second stop valve, the eighth stop valve and the ninth stop valve are in an open state, the third stop valve, the fourth stop valve, the sixth stop valve and the seventh stop valve are in a closed state,

the low-level hot water at the outlet of the first hot water coil pipe enters the heat collecting pipe through a first stop valve to be heated into high-level hot water, the high-level hot water is pumped by a first circulating pump to be filled with the first hot water coil pipe after passing through a water tank and a second stop valve, the lithium bromide solution is sprayed on the surface of the first hot water coil pipe through a first spraying device by a second circulating pump, the lithium bromide solution absorbs heat to be continuously evaporated, concentrated and crystallized, part of solar high-level energy is stored in a crystallization mode, a fifth stop valve is in an open state, water vapor generated by solution concentration enters a condensation water cavity from a solution cavity through the fifth stop valve, the water vapor contacts with the surface of a second hot water coil pipe with lower temperature to condense and release heat, the water in the second hot water coil pipe enters a source side heat exchanger to release heat through a ninth stop valve, the water after the fourth circulating pump is pumped to be filled with the second hot water coil pipe through an eighth stop valve,

The solar concentrating frequency division subsystem generates electricity, converts the electricity into alternating current through a storage battery and an inverter, then drives a compressor to operate, and is connected with mains supply from a mains supply contact to supplement the electricity when the electricity is insufficient, at the moment, mechanical compression circulation is started, the refrigerant is changed into low-temperature low-pressure refrigerant vapor after releasing cold energy to air at a user side through an evaporator, the refrigerant vapor is changed into high-temperature high-pressure refrigerant vapor after being compressed by the compressor, the high-temperature high-pressure refrigerant liquid is changed into high-temperature high-pressure refrigerant liquid after being released to a cooling water loop through a condenser, and finally the refrigerant liquid is changed into low-temperature low-pressure refrigerant liquid through a throttle valve and then returns to the evaporator, and continuous circulation is realized to realize refrigeration;

at night, the first stop valve, the second stop valve, the eighth stop valve and the ninth stop valve are in a closed state, the third stop valve, the fourth stop valve, the sixth stop valve and the seventh stop valve are in an open state,

the water in the second hot water coil pipe enters the user side heat exchanger through a sixth stop valve to release cold energy to the air at the user side, the temperature of the water is increased, and the water with the increased temperature is pumped by the fifth circulating pump to fill the second hot water coil pipe through a seventh stop valve; the third circulating pump pumps condensed water at the bottom of the condensed water cavity to spray to the surface of the second hot water coil pipe through the second spraying device, the condensed water is vaporized, meanwhile, a fifth stop valve is opened, water vapor generated by vaporization enters the solution cavity through the fifth stop valve and is absorbed by concentrated solution sprayed on the first hot water coil pipe, the concentration of the solution is reduced, the crystallization dissolution ensures the dynamic equilibrium state of the concentration, the hot water in the first hot water coil pipe is heated by heat release in the absorption process, the heated hot water enters a source side heat exchanger through a fourth stop valve to release heat to a cooling water loop, and the cooled water is pumped by the fourth circulating pump to return to the first hot water coil pipe through the third stop valve.

Further, the solar concentrating frequency division subsystem comprises a groove type concentrator, a photovoltaic cell panel, a groove type interference film frequency divider and a heat collecting pipe,

the solar cell panel is arranged above the central axis of the trough type condenser and is used for being connected with a storage battery, a heat collecting tube is arranged at the focal line of the trough type condenser and is fixed on the trough type condenser through a heat collecting tube bracket, and a trough type interference film frequency divider is arranged below the heat collecting tube.

Further, the solar concentrating frequency division subsystem is a concentrating frequency division device, the concentrating frequency division device comprises a film plating concentrating power generation groove, a heat collecting absorption tube, a glass cover plate, a closed cavity, a concentrating photo-thermal photoelectric unit and a protective supporting structure,

the energy-collecting photo-thermal photoelectric unit is arranged in a protective supporting structure with an opening at the upper part and comprises a plurality of energy-collecting photo-thermal photoelectric units which are uniformly distributed, each energy-collecting photo-thermal photoelectric unit comprises a film-plating light-gathering power generation groove and a heat collecting absorption tube, the end parts of two adjacent film-plating light-gathering power generation grooves are connected, the film-plating light-gathering power generation grooves at the peripheral edge are tightly connected with the peripheral inner wall of the protective supporting structure, each film-plating light-gathering power generation groove sequentially comprises a glass substrate, a lower packaging adhesive film, a photovoltaic cell piece, an upper packaging adhesive film and a frequency dividing film from bottom to top, the glass substrate is of a groove-shaped structure, the cross section of each glass substrate is of a parabolic shape, and the lower packaging adhesive film, the photovoltaic cell piece, the upper packaging adhesive film and the frequency dividing film are sequentially and flexibly attached to the glass substrate; the heat collecting and absorbing pipes of each energy-collecting photo-thermal photoelectric unit are arranged on the focal line of the film plating light-collecting power generation groove, a glass cover plate is arranged above each energy-collecting photo-thermal photoelectric unit, a cavity between the two is a closed cavity, and the closed cavity is vacuumized.

Further, the system also comprises a multi-mirror condensation tracking system which is arranged above the condensation frequency division device and comprises a plane reflecting mirror, a cross rod, a frame pillar, a main frame, a roller, a first hinging member, a second hinging member, a third hinging member, a telescopic short rod and a frame telescopic pillar,

two corners of one side of the main frame along the transverse rod arrangement direction are connected with one end of a telescopic short rod, the telescopic end of the telescopic short rod is connected with a frame telescopic strut through a third hinging member, and two corners of the other side of the main frame are connected with the frame strut through a second hinging member;

the main frame includes a plurality of horizontal pole, the both ends of horizontal pole all are equipped with the gyro wheel, the gyro wheel joint is in the spout of seting up on the main frame lateral wall and can follow the extending direction slip of spout, and every horizontal pole all is connected with the plane speculum through first articulated member, and main frame below is equipped with spotlight frequency divider, spotlight frequency divider's glass apron or protection bearing structure's four angles are connected and four angles are located the coplanar with main frame parallel with frame pillar and frame telescopic strut respectively.

Further, the glass cover plate may be a high-transmittance glass; an antireflection film is arranged on the outer surface of the glass cover plate.

Further, roller motors are arranged on rollers on one side of each cross rod, a first hinge motor for driving the plane mirror to rotate is arranged on the first hinge member, and the frame telescopic support is electrically driven or hydraulically driven; the intelligent control device is characterized by further comprising a central controller and a sensor, wherein the input end of the central controller is connected with the sensor, and the output end of the central controller is respectively connected with the roller motor, the first hinge motor and the frame telescopic strut.

Further, the sensor comprises a rotation angle sensor for monitoring the rotation angle of the plane mirror and an infrared sensor for monitoring the distance between the cross bars, and is used for feeding back rotation angle signals of the plane mirror and distance signals of the cross bars to the central controller through the two sensors, comparing the rotation angle signals with the rotation angle of the plane mirror and the distance between the cross bars acquired in real time, and if deviation exists, adjusting the rotation angle of the plane mirror and the distance between the cross bars according to the acquisition result of the real-time signals, so that the main direction of the receiving surface of the plane mirror keeps the morning towards east, the noon horizontal and the afternoon towards west.

Compared with the prior art, the invention has the beneficial effects that:

the invention relates to a solar concentrating frequency-dividing-crystallization energy-storing heat pump air conditioning system and a control method, wherein the heat-electricity combined heat pump air conditioning system comprises a solar concentrating frequency-dividing subsystem, a lithium bromide crystallization energy-storing subsystem, an absorption cycle, a mechanical compression cycle and a preheating cycle, wherein the solar heat-collecting quantity is utilized to drive the crystallization energy-storing subsystem and the absorption cycle to jointly operate so as to realize daytime heat supply, the solar energy storage quantity is utilized to drive the mechanical compression cycle, the mechanical compression cycle and the absorption cycle are thermally coupled, and the energy release of the lithium bromide crystallization energy-storing subsystem is ensured to realize nighttime heat supply; or the solar energy storage energy is used for driving mechanical compression and circulation refrigeration, the commercial power is supplemented when the electric quantity is insufficient, and the solar energy storage energy is complemented with the lithium bromide crystal energy storage subsystem only for refrigeration at night, so that the stable refrigeration throughout the day is realized;

According to the solar concentrating frequency division-crystallization energy storage combined heat pump air conditioning system and the control method, after sunlight is subjected to frequency division, wave bands in a spectrum response interval of a photovoltaic cell fall on the surface of the photovoltaic cell for generating electricity, and other wave bands fall on the surface of a heat collecting tube for collecting heat;

according to the solar concentrating frequency-dividing-crystallization energy-storing combined heat pump air conditioning system and the control method, after sunlight is concentrated, the energy flow density of the heat collecting pipe or the heat collecting absorption pipe is increased, the laying area of the heat collecting pipe or the heat collecting absorption pipe can be reduced, the cost is reduced, and the land resource is saved; the heat collection temperature is increased to provide a high-level heat source with more matched energy grade for the lithium bromide crystallization energy storage subsystem, the heat collection temperature is increased after condensation, if the heat is used for conventional absorption refrigeration, the crystallization problem caused by the overhigh heat collection temperature is considered, but the system stores energy by utilizing the lithium bromide crystallization process, so that the matching degree between the high-level heat source generated after condensation and the lithium bromide crystallization energy storage subsystem is better;

The invention relates to a solar concentrating frequency-dividing-crystallization energy-storing heat pump air conditioning system and a control method, which are used for supplying heat to a building in daytime, wherein a lithium bromide crystallization energy-storing subsystem utilizes solar energy to collect heat and store energy, and releases heat at a heat exchanger at a user side to supply heat to the user side;

the invention relates to a solar condensation frequency division-crystallization energy storage combined heat pump air conditioning system and a control method thereof, which are used for driving mechanical compression and circulation refrigeration by utilizing solar energy storage energy in the daytime when a building is used for cooling, supplementing commercial power when the electric quantity is insufficient, and complementing a lithium bromide crystallization energy storage subsystem only in the night refrigeration, thereby fully utilizing solar energy to realize the stable cooling all the day.

Drawings

Fig. 1 is a schematic diagram of a combined heat and power heat pump air conditioning system with solar condensation, frequency division and crystallization for energy storage according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a combined heat and power heat pump air conditioning system with solar condensation, frequency division and crystallization for energy storage in the embodiment of the invention;

FIG. 3 is a schematic diagram of a concentrating divider according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a concentrating and frequency dividing device with a multi-mirror concentrating tracking system according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of the film-coated concentrating power generation tank in fig. 3.

Reference numerals illustrate:

1. a trough condenser; 2. a photovoltaic cell panel; 3. an interference thin film divider; 4. a heat collecting pipe; 5. a water tank; 6. a crystallization heat storage tank; 6-1, a solution cavity; 6-2, a condensation water cavity; 7. a first spraying device; 8. a second spraying device; 9. a first hot water coil; 10. a second hot water coil; 11. a partition plate; 12. a source side heat exchanger; 13. a user side heat exchanger; 14. a storage battery; 15. an inverter; 16. an evaporator; 17. a compressor; 18. a condenser; 19. a throttle valve; 31. a first solar hot water pipeline; 32. a second solar hot water pipeline; 33. a third solar hot water pipeline; 34. a fourth solar hot water pipeline; 35. a fifth solar hot water pipeline; 36. a sixth solar hot water pipeline; 41. a first hot water main; 42. a second hot water main; 43. a third hot water main; 44. a fourth hot water main; 51. a first high-level hot water pipeline; 52. a second high-level hot water pipeline; 53. a third high-level hot water pipeline; 54. a fourth high-level hot water pipeline; 55. a fifth high-level hot water pipeline; 56. a sixth high-level hot water pipeline; 57. a seventh high-level hot water pipeline; 58. an eighth high-order hot water pipeline; 59. a ninth high-level hot water pipeline; 60. a tenth high-order hot water pipeline; 61. an eleventh high-order hot water pipeline; 71. a first low-level hot water line; 72. a second low-level hot water pipeline; 73. a third low-level hot water pipeline; 74. a fourth low-level hot water pipeline; 75. a fifth low-level hot water pipe; 81. a first solution line; 82. a second solution line; 83. a first condensate line; 84. a second condensate line; 91. a first communication pipe; 92. a second communicating pipe; 101. a first refrigerant line; 102. a second refrigerant line; 103. a third refrigerant line; 104. a fourth refrigerant line; 111. a first preheating hot water pipeline; 112. a second preheating hot water pipeline; 113. a third preheating hot water pipeline; 121. a first circulation pump; 122. a second circulation pump; 123. a third circulation pump; 124. a fourth circulation pump; 125. a fifth circulation pump; 126. a sixth circulation pump; 131. a first stop valve; 132. a second shut-off valve; 133. a third stop valve; 134. a fourth shut-off valve; 135. a fifth shut-off valve; 136. a sixth shut-off valve; 137. a seventh stop valve; 138. an eighth shutoff valve; 139. a ninth shut-off valve; 141. incident rays of the sun; 142. reflecting light once; 143. secondary reflection of light; 144. transmitting light; 151. a first electric wire; 152. a second electric wire; 153. a third electric wire; 154. a fourth electric wire; 155. a fifth electric wire; 161. outdoor air; 162. user side air; 163. a first cooling water pipeline; 164. a second cooling water pipeline; 165. a third cooling water pipeline; 171. a film plating concentrating power generation groove; 171-1, a glass substrate; 171-2, lower packaging adhesive film; 171-3, photovoltaic cell pieces; 171-4, upper packaging adhesive film; 171-5, frequency division film; 172. a heat collecting and absorbing pipe; 173. a glass cover plate; 174. closing the cavity; 175. an energy-accumulating photo-thermal photo-electronic unit; 176. an energy-gathering photo-thermal photoelectric unit; 177. protecting the support structure; 181. a planar mirror; 182. a cross bar; 183. a frame strut; 184. a main frame; 185. a roller; 186. a first hinge member; 187. a second hinge member; 188. a third hinge member; 189. a telescoping short rod; 190. the frame stretches out and draws back the pillar.

Detailed Description

In the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", "left", "right", and the like in the embodiments indicate terms of orientation, and only for simplifying the description based on the positional relationship of the drawings in the specification, do not represent that the elements and devices and the like referred to must be operated according to the specific orientation and the defined operations and methods, configurations in the specification, and such orientation terms do not constitute limitations of the present invention.

In the description of the present invention, it should be noted that the terms "first," "second," "third," and the like referred to in the embodiments of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", "a third", etc. may explicitly or implicitly include one or more such feature.

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

The specific embodiment I is as follows: the invention provides a solar concentrating frequency division-crystallization energy storage combined heat pump air conditioning system, which is shown in the figure 1, and comprises a solar concentrating frequency division subsystem, a lithium bromide crystallization energy storage subsystem, an absorption cycle, a mechanical compression cycle and a preheating cycle,

The solar concentrating frequency division subsystem comprises a groove type concentrator 1, a photovoltaic cell panel 2, a groove type interference film frequency divider 3 and a heat collecting tube 4;

the solar incident light 141 is reflected by the groove type condenser 1, the primary reflected light 142 reaches the surface of the groove type interference film frequency divider 3, the wave band in the spectrum response interval of the photovoltaic cell is reflected, the secondary reflected light 143 falls on the surface of the photovoltaic cell panel 2 to generate electric energy, and the transmitted light 144 of the other wave bands falls on the surface of the heat collecting tube 4 to collect heat;

the lithium bromide crystallization energy storage subsystem comprises a crystallization heat storage tank 6, a solution cavity 6-1, a condensation water cavity 6-2, a first spraying device 7, a second spraying device 8, a first hot water coil 9, a second hot water coil 10, a partition plate 11, a second circulating pump 122, a third circulating pump 123, a first hot water main 41, a second hot water main 42, a third hot water main 43, a fourth hot water main 44, a first solution pipeline 81, a second solution pipeline 82, a first condensation water pipeline 83, a second condensation water pipeline 84, a first communication pipe 91, a second communication pipe 92 and a fifth stop valve 135;

the crystallization heat storage tank 6 is divided into a solution cavity 6-1 and a condensation cavity 6-2 by a partition plate 11, lithium bromide solution is filled in the solution cavity 6-1, condensation water is filled in the condensation cavity 6-2, a first hot water coil 9 and a second hot water coil 10 are respectively arranged in upper spaces of the solution cavity 6-1 and the condensation cavity 6-2, the lower side of a first communication pipe 91 is communicated with the top of the solution cavity 6-1, the left end of a fifth stop valve 135 is connected with the upper side of the first communication pipe 91, the upper side of a second communication pipe 92 is connected with the right end of the fifth stop valve 135, and the top of the condensation cavity 6-2 is communicated with the lower side of the second communication pipe 92; the inlet end of the first hot water main pipe 41 is connected with the outlet end of the first hot water coil 9, the outlet end of the second hot water main pipe 42 is connected with the inlet end of the first hot water coil 9, the inlet end of the third hot water main pipe 43 is connected with the outlet end of the second hot water coil 10, the outlet end of the fourth hot water main pipe 44 is connected with the inlet end of the second hot water coil 10, the inlet end of the first solution pipeline 81 is connected with the bottom of the solution cavity 6-1, the inlet end of the second circulating pump 122 is connected with the outlet end of the first solution pipeline 81, the inlet end of the second solution pipeline 82 is connected with the outlet end of the second circulating pump 122, the first spraying device 7 is connected with the outlet end of the second solution pipeline 82, the inlet end of the first condensation water pipeline 83 is connected with the bottom of the condensation water cavity 6-2, the inlet end of the third circulating pump 123 is connected with the outlet end of the first condensation water pipeline 83, the inlet end of the second condensation water pipeline 84 is connected with the outlet end of the third circulating pump 123, and the second spraying device 8 is connected with the outlet end of the second condensation pipeline 84;

The absorption cycle includes a source side heat exchanger 12, a user side heat exchanger 13, a fourth circulation pump 124, a fifth circulation pump 125, a first high-order hot water line 51, a second high-order hot water line 52, a third high-order hot water line 53, a fourth high-order hot water line 54, a fifth high-order hot water line 55, a sixth high-order hot water line 56, a seventh high-order hot water line 57, an eighth high-order hot water line 58, a ninth high-order hot water line 59, a tenth high-order hot water line 60, an eleventh high-order hot water line 61, a first low-order hot water line 71, a second low-order hot water line 72, a third low-order hot water line 73, a fourth low-order hot water line 74, a fifth low-order hot water line 75, a third cut-off valve 133, a fourth cut-off valve 134, a sixth cut-off valve 136, a seventh cut-off valve 137, an eighth cut-off valve 138, and a ninth cut-off valve 139;

the inlet end of the fourth stop valve 134 is connected with the outlet end of the first high-order hot water pipeline 51, the inlet end of the second high-order hot water pipeline 52 is connected with the outlet end of the fourth stop valve 134, the inlet end of the sixth stop valve 136 is connected with the outlet end of the eighth high-order hot water pipeline 58, the inlet end of the ninth high-order hot water pipeline 59 is connected with the outlet end of the sixth stop valve 136, the outlet end of the ninth high-order hot water pipeline 59 is connected with the inlet end of the third high-order hot water pipeline 53 after being joined with the outlet end of the second high-order hot water pipeline 52, the inlet end of the user-side heat exchanger 13 is connected with the outlet end of the third high-order hot water pipeline 53, the inlet end of the fourth high-order hot water pipeline 54 is connected with the outlet end of the user-side heat exchanger 13, the user side heat exchanger 13 is communicated with the user side air 162, the inlet end of the fifth circulating pump 125 is connected with the outlet end of the fourth high-order hot water pipeline 54, the inlet end of the fifth high-order hot water pipeline 55 is connected with the outlet end of the fifth circulating pump 125, the outlet end of the fifth high-order hot water pipeline 55 is respectively connected with the inlet end of the sixth high-order hot water pipeline 56 and the inlet end of the tenth high-order hot water pipeline 60, the inlet end of the third stop valve 133 is connected with the outlet end of the sixth high-order hot water pipeline 56, the inlet end of the seventh hot water pipeline 57 is connected with the outlet end of the third stop valve 133, the inlet end of the seventh stop valve 137 is connected with the outlet end of the tenth high-order hot water pipeline 60, and the inlet end of the eleventh high-order hot water pipeline 61 is connected with the seventh stop valve 137;

An inlet end of the ninth cutoff valve 139 is connected to an outlet end of the first low-order hot water pipe 71, an inlet end of the second low-order hot water pipe 72 is connected to an outlet end of the ninth cutoff valve 139, an inlet end of the source side heat exchanger 12 is connected to an outlet end of the second low-order hot water pipe 72, an inlet end of the fourth circulation pump 124 is connected to an outlet end of the source side heat exchanger 12, an inlet end of the fourth low-order hot water pipe 74 is connected to an outlet end of the fourth circulation pump 124, an inlet end of the eighth cutoff valve 138 is connected to an outlet end of the fourth low-order hot water pipe 74, and an inlet end of the fifth low-order hot water pipe 75 is connected to an outlet end of the eighth cutoff valve 138;

the mechanical compression cycle comprises an evaporator 16, a compressor 17, a condenser 18, a throttle valve 19, a first refrigerant line 101, a second refrigerant line 102, a third refrigerant line 103 and a fourth refrigerant line 104;

the inlet end of the first refrigerant line 101 is connected with the outlet end of the evaporator 16, the inlet end of the compressor 17 is connected with the outlet end of the first refrigerant line 101, the inlet end of the second refrigerant line 102 is connected with the outlet end of the compressor 17, the inlet end of the condenser 18 is connected with the outlet end of the second refrigerant line 102, the outlet end of the condenser 18 is connected with the inlet end of the third refrigerant line 103, the inlet end of the throttle valve 19 is connected with the outlet end of the third refrigerant line 103, the inlet end of the fourth refrigerant line 104 is connected with the outlet end of the throttle valve 19, the inlet end of the evaporator 16 is connected with the outlet end of the fourth refrigerant line 104, and the evaporator 16 is in communication with the outdoor air 161;

The preheating cycle includes a sixth circulation pump 126, a first preheating hot water line 111, a second preheating hot water line 112, and a third preheating hot water line 113;

the inlet end of the first preheating hot water pipeline 111 is connected with the outlet end of the condenser 18, the inlet end of the source side heat exchanger 12 is connected with the outlet end of the first preheating hot water pipeline 111, the inlet end of the second preheating hot water pipeline 112 is connected with the outlet end of the source side heat exchanger 12, the inlet end of the sixth circulating pump 126 is connected with the outlet end of the second preheating hot water pipeline 112, the inlet end of the third preheating hot water pipeline 113 is connected with the outlet end of the sixth circulating pump 126, and the inlet end of the condenser 18 is connected with the outlet end of the third preheating hot water pipeline 113;

the solar concentrating and frequency dividing subsystem, the crystallization energy storage subsystem and the absorption type circulation room are mutually connected, wherein the solar concentrating and frequency dividing subsystem, the crystallization energy storage subsystem and the absorption type circulation room are respectively connected with the inlet end of a first solar hot water pipeline 31 and the inlet end of a first high-position hot water pipeline 51 at the side of a solution cavity 6-1, the inlet end of a first stop valve 131 is connected with the outlet end of the first solar hot water pipeline 31, the inlet end of a second solar hot water pipeline 32 is connected with the outlet end of the first stop valve 131, the inlet end of a heat collecting pipe 4 is connected with the inlet end of the second solar hot water pipeline 32, the inlet end of a third solar hot water pipeline 33 is connected with the outlet end of the heat collecting pipe 4, the inlet end of a water tank 5 is connected with the outlet end of the third solar hot water pipeline 33, the outlet end of the water tank 5 is connected with the inlet end of the first circulation pump 121, the inlet end of a fifth solar hot water pipeline 35 is connected with the outlet end of the first circulation pump 121, the inlet end of a second stop valve 132 is connected with the outlet end of the fifth solar hot water pipeline 35, the inlet end of a sixth solar hot water pipeline 36 is connected with the outlet end of a sixth hot water pipeline 36 and the outlet of a main pipe 57 of the second heat collecting pipe 4;

The outlet end of the third hot water main pipe 43 at the side of the condensation water cavity 6-2 is respectively connected with the inlet end of the first low-level hot water pipeline 71 and the inlet end of the eighth high-level hot water pipeline 58, and the outlet end of the fifth low-level hot water pipeline 75 and the outlet end of the eleventh high-level hot water pipeline 61 are connected with the inlet end of the fourth hot water main pipe 44 after being converged;

the solar concentrating frequency division subsystem is connected with the mechanical compression cycle through an electric wire, the inlet end of a first electric wire 151 is connected with the photovoltaic cell panel 2, the inlet end of the storage battery 14 is connected with the outlet end of the first electric wire 151, the inlet end of a second electric wire 152 is connected with the outlet end of the storage battery 14, the inlet end of the inverter 15 is connected with the outlet end of the second electric wire 152, the inlet end of a fourth electric wire 154 is connected with the outlet end of the inverter 15, the outlet end of the third electric wire 153 and the outlet end of the fourth electric wire 154 are converged and then are connected with the inlet end of a fifth electric wire 155, and the fifth electric wire 155 conveys electric quantity to the compressor 17.

The operating principle of this embodiment:

the joint operation process of all subsystems in the daytime: the solar concentrating frequency-dividing subsystem, the lithium bromide crystallization energy-storing subsystem and the absorption type circulation are operated in a combined mode to store energy, and the heat is released from the user side heat exchanger 13 to supply heat. At this time, the first and second shut-off valves 131 and 132 are in an open state, the third and fourth shut-off valves 133 and 134 are in a closed state, the sixth and seventh shut-off valves 136 and 137 are in an open state, and the eighth and ninth shut-off valves 138 and 139 are in a closed state. The low-level hot water at the outlet of the first hot water coil 9 enters the heat collecting pipe 4 through the first stop valve 131 to be heated into high-level hot water, the first circulating pump 121 pumps the high-level hot water to fill the first hot water coil 9 through the water tank 5 and the second stop valve 132, the second circulating pump 122 pumps lithium bromide solution to be sprayed to the surface of the first hot water coil 9 through the first spraying device 7, the lithium bromide solution absorbs heat to be evaporated, concentrated and crystallized continuously, part of solar high-level energy is stored in a crystallization mode, meanwhile, the fifth stop valve 135 is opened, water vapor generated by solution concentration enters the condensation water cavity 6-2 from the solution cavity 6-1 through the fifth stop valve 135, the water vapor contacts with the surface of the second hot water coil 10 with lower temperature to be condensed and released, water in the second hot water coil 10 enters the user side heat exchanger 13 through the sixth stop valve 136 to heat the user side air 162, and the water after the temperature reduction is pumped by the fifth circulating pump 125 to fill the second hot water coil 10 through the seventh stop valve 137. The crystallization process, the steam flowing process and the steam condensing process are continuously carried out, but when the crystallization content of the lithium bromide solution in the solution cavity 6-1 reaches a certain degree, the fifth stop valve 135 needs to be closed, namely the function of the fifth stop valve 135 is to block the communication between the solution cavity 6-1 and the condensing cavity 6-2 when the concentration of the lithium bromide solution is higher, so as to prevent the explanation of crystallization dissolution caused by too high concentration of the lithium bromide solution in the solution cavity 6-1 and the water vapor in the reversely-absorbed condensing cavity 6-2;

The joint operation process of all subsystems at night comprises the following steps: the condensation frequency division subsystem and the mechanical compression cycle are combined to operate to provide a low-level heat source for the source side heat exchanger 12, the electricity generated by the photovoltaic cell panel 2 is converted into alternating current through the storage battery 14 and the inverter 15 and then drives the compressor 17 to operate, when the electricity is insufficient, the commercial power is connected from a commercial power contact point to be supplemented, at the moment, the mechanical compression cycle is started, the refrigerant absorbs heat from the outdoor air 161 through the evaporator 16 and then becomes low-temperature low-pressure refrigerant vapor, the low-temperature low-pressure refrigerant vapor is compressed through the compressor 17 and becomes high-temperature high-pressure refrigerant vapor, the high-temperature high-pressure refrigerant liquid is discharged through the condenser 18 to the preheating circulating water loop, and finally the low-temperature low-pressure refrigerant liquid is changed into low-temperature low-pressure refrigerant liquid through the throttle valve 19 and then returns to the evaporator 16; the preheated hot water enters the source side heat exchanger 12 to release heat after being heated by the condenser 18, and is pumped back to the condenser 18 by the sixth circulating pump 126 after the temperature is reduced;

the solar concentrating frequency-dividing subsystem, the lithium bromide crystallization energy-storing subsystem and the absorption cycle are combined to perform energy release and heat supply, at this time, the first stop valve 131 and the second stop valve 132 are in a closed state, the third stop valve 133 and the fourth stop valve 134 are in an open state, the sixth stop valve 136 and the seventh stop valve 137 are in a closed state, and the eighth stop valve 138 and the ninth stop valve 139 are in an open state. The water in the second hot water coil 10 enters the source side heat exchanger 12 through the ninth cutoff valve 139, absorbs heat from the preheated circulating water loop, and then increases in temperature, and the fourth circulating pump 124 pumps the water with the increased temperature to fill the second hot water coil 10 through the eighth cutoff valve 138. The third circulating pump 123 pumps the condensed water at the bottom of the condensed water cavity 6-2 to spray the condensed water to the surface of the second hot water coil 10 through the second spraying device 8, the condensed water is vaporized, meanwhile, the fifth stop valve 135 is opened, the water vapor generated by vaporization enters the solution cavity 6-1 through the fifth stop valve 135 and is absorbed by the concentrated solution sprayed on the first heating coil 9, the concentration of the solution is reduced, the crystallization and dissolution ensure the dynamic equilibrium state of the concentration, the absorption process releases heat to heat the hot water in the first hot water coil 9, the heated hot water enters the user side heat exchanger 13 through the fourth stop valve 134 to heat the user side air 162, and the water pumped and cooled by the fifth circulating pump 125 returns to the first hot water coil 9 through the third stop valve 133. The evaporation process of the condensed water, the steam flowing process, and the crystallization dissolving process are continuously performed, and the user side heat exchanger 13 continuously supplies heat to the room.

The invention separates and converts the wavelength which does not work on the photovoltaic power generation into heat by utilizing the condensation frequency division technology, improves the energy utilization rate of solar energy, increases the energy flow density of the heat collecting tube after condensation, can reduce the heat collecting area, and can realize heat supply by releasing the energy stored in daytime at night after combining the lithium bromide crystallization energy storage technology, thereby solving the problem of unstable heat supply caused by the intermittence and the fluctuation of solar energy. The mechanical compression cycle and the absorption cycle are thermally coupled by utilizing electric energy at night, on one hand, the electric quantity stored in the daytime is utilized to provide a low-level heat source for the source side heat exchanger 12, so that solar energy is fully utilized, the normal energy release at night of the lithium bromide crystal energy storage subsystem is ensured to supply heat to a user, on the other hand, the temperature difference between the lifting target temperature of the mechanical compression cycle and outdoor air is small, and the temperature difference between the lifting target temperature and the outdoor air is not required to be increased, so that the outdoor air can be directly heated, and the whole system does not need an additional heat source. In summary, the invention fully utilizes solar energy to realize stable heat supply of the building.

And a specific embodiment II: the invention provides a solar concentrating frequency division-crystallization energy storage combined heat pump air conditioning system, which is shown in the figure 2, and comprises a solar concentrating frequency division subsystem, a lithium bromide crystallization energy storage subsystem, an absorption cycle, a mechanical compression cycle and a cooling water cycle,

The solar concentrating frequency division subsystem comprises: a groove type condenser 1, a photovoltaic cell panel 2, a groove type interference film frequency divider 3 and a heat collecting tube 4;

the baffle 11 divides the crystallization heat storage tank 6 into a solution cavity 6-1 and a condensation cavity 6-2, lithium bromide solution is filled in the solution cavity 6-1, condensation water is filled in the condensation cavity 6-2, a first hot water coil 9 and a second heating coil 10 are respectively arranged in the upper space of the solution cavity 6-1 and the condensation cavity 6-2, the lower side of a first communicating pipe 91 is communicated with the top of the solution cavity 6-1, the left end of a fifth stop valve 135 is connected with the upper side of the first communicating pipe 91, the upper side of a second communicating pipe 92 is connected with the right end of the fifth stop valve 135, and the top of the condensation cavity 6-2 is communicated with the lower side of the second communicating pipe 92. The inlet end of the first hot water main pipe 41 is connected with the outlet end of the first hot water coil 9, the outlet end of the second hot water main pipe 42 is connected with the inlet end of the first hot water coil 9, the inlet end of the third hot water main pipe 43 is connected with the outlet end of the second hot water coil 10, the outlet end of the fourth hot water main pipe 44 is connected with the inlet end of the second hot water coil 10, the inlet end of the first solution pipeline 81 is connected with the bottom of the solution cavity 6-1, the inlet end of the second circulating pump 122 is connected with the outlet end of the first solution pipeline 81, the inlet end of the second solution pipeline 82 is connected with the outlet end of the second circulating pump 122, the first spraying device 7 is connected with the outlet end of the second solution pipeline 82, the inlet end of the first condensation water pipeline 83 is connected with the bottom of the condensation water cavity 6-2, the inlet end of the third circulating pump 123 is connected with the outlet end of the first condensation water pipeline 83, the inlet end of the second condensation water pipeline 84 is connected with the outlet end of the third circulating pump 123, and the second spraying device 8 is connected with the outlet end of the second condensation pipeline 84;

the inlet end of the fourth stop valve 134 is connected to the outlet end of the first high-order hot water pipe 51, the inlet end of the second high-order hot water pipe 52 is connected to the outlet end of the fourth stop valve 134, the inlet end of the ninth stop valve 139 is connected to the outlet end of the eighth high-order hot water pipe 58, the inlet end of the ninth high-order hot water pipe 59 is connected to the outlet end of the ninth stop valve 139, the outlet end of the ninth high-order hot water pipe 59 is connected to the inlet end of the third high-order hot water pipe 53 after merging with the outlet end of the second high-order hot water pipe 52, the inlet end of the source side heat exchanger 12 is connected to the outlet end of the third high-order hot water pipe 53, the inlet end of the fourth high-order hot water pipe 54 is connected to the outlet end of the source side heat exchanger 12, the inlet end of the fourth circulation pump 124 is connected to the outlet end of the fourth high-order hot water pipe 54, the inlet end of the fifth high-order hot water pipe 55 is connected to the outlet end of the fourth circulation pump 124, the outlet end of the fifth high-order hot water pipe 55 is connected to the inlet end of the seventh high-order hot water pipe 60, the inlet end of the tenth high-order hot water pipe 60 is connected to the inlet end of the eighth high-order hot water pipe 60, the inlet end of the eighth stop valve 133 is connected to the inlet end of the eighth high-order hot water pipe 60, and the inlet end of the eighth high-order hot water pipe 60 is connected to the inlet end of the eighth high-order hot water pipe 60;

The inlet end of the sixth stop valve 136 is connected to the outlet end of the first low-level hot water pipe 71, the inlet end of the second low-level hot water pipe 72 is connected to the outlet end of the sixth stop valve 136, the inlet end of the user-side heat exchanger 13 is connected to the outlet end of the second low-level hot water pipe 72, the inlet end of the fifth circulation pump 125 is connected to the outlet end of the user-side heat exchanger 13, the user-side heat exchanger 13 is communicated with the user-side air 162, the inlet end of the fourth low-level hot water pipe 74 is connected to the outlet end of the fifth circulation pump 125, the inlet end of the seventh stop valve 137 is connected to the outlet end of the fourth low-level hot water pipe 74, and the inlet end of the fifth low-level hot water pipe 75 is connected to the outlet end of the seventh stop valve 137;

the mechanical compression cycle comprises an evaporator 16, a compressor 17, a condenser 18, a throttle valve 19, a first refrigerant line 101, a second refrigerant line 102, a third refrigerant line 103, a fourth refrigerant line 104;

the inlet end of the first refrigerant line 101 is connected with the outlet end of the evaporator 16, the inlet end of the compressor 17 is connected with the outlet end of the first refrigerant line 101, the inlet end of the second refrigerant line 102 is connected with the outlet end of the compressor 17, the inlet end of the condenser 18 is connected with the outlet end of the second refrigerant line 102, the outlet end of the condenser 18 is connected with the inlet end of the third refrigerant line 103, the inlet end of the throttle valve 19 is connected with the outlet end of the third refrigerant line 103, the inlet end of the fourth refrigerant line 104 is connected with the outlet end of the throttle valve 19, the inlet end of the evaporator 16 is connected with the outlet end of the fourth refrigerant line 104, and the evaporator 16 is in communication with the user side air 162;

The cooling water cycle includes a source side heat exchanger 12, a condenser 18 and a cooling tower,

the cooling water sequentially passes through the condenser 18 and the source side heat exchanger 12, the first cooling water pipeline 163 is from the cooling tower, the outlet end of the first cooling water pipeline is connected with the inlet end of the condenser 18, the inlet end of the second cooling water pipeline 164 is connected with the outlet end of the condenser 18, the inlet end of the source side heat exchanger 12 is connected with the outlet end of the second cooling water pipeline 164, the inlet end of the third cooling water pipeline 165 is connected with the outlet end of the source side heat exchanger 12, and the third cooling water pipeline 165 leads to the cooling tower;

the solar concentrating and frequency dividing subsystem, the crystallization energy storage subsystem and the absorption type circulation room are mutually connected, wherein the solar concentrating and frequency dividing subsystem, the crystallization energy storage subsystem and the absorption type circulation room are respectively connected with the inlet end of a first solar hot water pipeline 31 and the inlet end of a first high-position hot water pipeline 51 at the side of a solution cavity 6-1, the inlet end of a first stop valve 131 is connected with the outlet end of the first solar hot water pipeline 31, the inlet end of a second solar hot water pipeline 32 is connected with the outlet end of the first stop valve 131, the inlet end of a heat collecting pipe 4 is connected with the inlet end of the second solar hot water pipeline 32, the inlet end of a third solar hot water pipeline 33 is connected with the outlet end of the heat collecting pipe 4, the inlet end of a water tank 5 is connected with the outlet end of the third solar hot water pipeline 33, the inlet end of a first circulating pump 121 is connected with the outlet end of the water tank 5, the inlet end of a fifth solar hot water pipeline 35 is connected with the outlet end of the first circulating pump 121, the inlet end of the second stop valve 132 is connected with the outlet end of the fifth solar hot water pipeline 35, the inlet end of the sixth solar hot water pipeline 36 is connected with the outlet end of the sixth hot water pipeline 36 and the outlet of the second heat collecting pipe 4 is connected with the outlet end of the sixth hot water pipeline 57;

Other combinations and connection relationships of this embodiment are the same as those of the first embodiment.

The operating principle of this embodiment:

the joint operation process of all subsystems in the daytime: the solar concentrating frequency-dividing subsystem, the lithium bromide crystallization energy-storing subsystem and the absorption type circulating combined operation are used for storing energy. At this time, the first and second shut-off valves 131 and 132 are in an open state, the third and fourth shut-off valves 133 and 134 are in a closed state, the sixth and seventh shut-off valves 136 and 137 are in a closed state, and the eighth and ninth shut-off valves 138 and 139 are in an open state. The low-level hot water at the outlet of the first hot water coil 9 enters the heat collecting pipe 4 through the first stop valve 131 to be heated into high-level hot water, the first circulating pump 121 pumps the high-level hot water to fill the first hot water coil 9 through the water tank 5 and the second stop valve 132, the second circulating pump 122 pumps lithium bromide solution to be sprayed to the surface of the first hot water coil 9 through the first spraying device 7, the lithium bromide solution absorbs heat to be evaporated, concentrated and crystallized continuously, part of solar high-level energy is stored in a crystallization mode, meanwhile, the fifth stop valve 135 is opened, water vapor generated by solution concentration enters the condensation water cavity 6-2 from the solution cavity 6-1 through the fifth stop valve 135, the water vapor contacts with the surface of the second hot water coil 10 with lower temperature, heat is released by condensation, water in the second hot water coil 10 enters the source side heat exchanger 12 through the ninth stop valve 139 to release heat to the cooling water loop, and the water after the temperature reduction is pumped by the fifth circulating pump 125 is filled with the second hot water coil 10 through the eighth stop valve 138. The crystallization process, the steam flowing process and the steam condensing process are continuously carried out, but when the crystallization content of the lithium bromide solution in the solution cavity 6-1 reaches a certain degree, the fifth stop valve 135 needs to be closed, namely the function of the fifth stop valve 135 is to block the communication between the solution cavity 6-1 and the condensing cavity 6-2 when the concentration of the lithium bromide solution is higher, so as to prevent the explanation of crystallization dissolution caused by too high concentration of the lithium bromide solution in the solution cavity 6-1 and the water vapor in the reversely-absorbed condensing cavity 6-2;

The condensation frequency division subsystem and the mechanical compression circulation are combined to realize refrigeration, the electricity generated by the photovoltaic panel 2 is converted into alternating current through the storage battery 14 and the inverter 15 and then is driven to operate the compressor 17, when the electricity is insufficient, the electricity is connected into mains supply from a mains supply contact point, at the moment, the mechanical compression circulation is started, the refrigerant is changed into low-temperature low-pressure refrigerant vapor after releasing cold energy to the air 162 at the user side through the evaporator 16, the refrigerant is compressed into high-temperature high-pressure refrigerant vapor through the compressor 17, the high-temperature high-pressure refrigerant liquid is released into a cooling water loop through the condenser 18, and finally the refrigerant liquid is changed into low-temperature low-pressure refrigerant liquid through the throttle valve 19 and then returns to the evaporator 16, and the continuous circulation is realized.

The joint operation process of all subsystems at night comprises the following steps: the solar concentrating frequency division subsystem, the lithium bromide crystallization energy storage subsystem and the absorption cycle are combined to operate for energy release, and cold energy is released to the user side air 162 at the user side heat exchanger 13. At this time, the first and second shut-off valves 131 and 132 are in a closed state, the third and fourth shut-off valves 133 and 134 are in an open state, the sixth and seventh shut-off valves 136 and 137 are in an open state, and the eighth and ninth shut-off valves 138 and 139 are in a closed state. The water in the second hot water coil 10 enters the user side heat exchanger 13 through the sixth stop valve 136 to release cold energy to the user side air 162, and then the temperature rises, and the fifth circulation pump 125 pumps the water with the raised temperature to fill the second hot water coil 10 through the seventh stop valve 137. The third circulating pump 123 pumps the condensed water at the bottom of the condensed water cavity 6-2 to spray to the surface of the second hot water coil 10 through the second spraying device 8, the condensed water is vaporized, meanwhile, the fifth stop valve 135 is opened, the water vapor generated by vaporization enters the solution cavity 6-1 through the fifth stop valve 135 and is absorbed by the concentrated solution sprayed on the first heating coil 9, the concentration of the solution is reduced, the crystallization and dissolution ensure the dynamic equilibrium state of the concentration, the absorption process releases heat to heat the hot water in the first hot water coil 9, the heated hot water enters the source side heat exchanger 12 through the fourth stop valve 134 to release heat to the cooling water loop, and the fourth circulating pump 124 pumps the cooled water to return to the first hot water coil 9 through the third stop valve 133. The condensation water evaporation process, the steam flow process, and the crystallization dissolution process are continuously performed, and the user side heat exchanger 13 continuously releases cold into the room.

The invention separates and converts the wavelength which does not work on the photovoltaic power generation into heat by utilizing the condensation frequency division technology, improves the energy utilization rate of solar energy, increases the energy flow density of the heat collecting tube 4 after condensation, and can reduce the heat collecting area. In the daytime, the mechanical compression and circulation refrigeration is driven by the solar energy storage energy, the commercial power is supplemented when the electric quantity is insufficient, and the mechanical compression and circulation refrigeration is complemented with the lithium bromide crystal energy storage subsystem only in the night refrigeration, so that the solar energy is fully utilized to realize the steady cooling throughout the day.

And a third specific embodiment: as shown in fig. 3 to 5, unlike the first or second embodiment, the solar concentrating and frequency dividing subsystem may be replaced by a concentrating and frequency dividing device, where the concentrating and frequency dividing device includes a coated concentrating power generating tank 171, a heat collecting absorbing tube 172, a glass cover plate 173, a closed cavity 174, a concentrating photo-thermal-electronic unit 175, a concentrating photo-thermal-electronic unit 176 and a protective supporting structure 177,

the energy-collecting photo-thermal photoelectric unit 176 is arranged in a protective supporting structure 177 with an opening at the upper part, the energy-collecting photo-thermal photoelectric unit 176 comprises a plurality of energy-collecting photo-thermal photoelectric units 175 which are uniformly distributed, the energy-collecting photo-thermal photoelectric units 175 comprise film-plating light-gathering generating grooves 171 and heat-collecting absorbing pipes 172, the end parts of two adjacent film-plating light-gathering generating grooves 171 are connected, the film-plating light-gathering generating grooves 171 at the peripheral edges are tightly connected with the peripheral inner walls of the protective supporting structure 177, the film-plating light-gathering generating grooves 171 comprise a glass substrate 171-1, a lower packaging film 171-2, a photovoltaic cell 171-3, an upper packaging film 171-4 and a frequency dividing film 171-5 from bottom to top, the glass substrate 171-1 is of a groove-shaped structure, the cross section of the glass substrate 171-1 is of a parabolic shape, and the lower packaging film 171-2, the photovoltaic cell 171-3, the upper packaging film 171-4 and the frequency dividing film 171-5 are sequentially and flexibly attached to the glass substrate 171-1; the heat collecting and absorbing pipes 172 of each energy-collecting photo-thermal electronic unit 175 are arranged on the focal line of the film plating light-collecting power generation groove 171, a glass cover plate 173 is arranged above the energy-collecting photo-thermal units 176, a cavity between the two is a closed cavity 174, and the closed cavity 174 is vacuumized.

Other combinations and connections of this embodiment are the same as those of the first or second embodiment.

The heat collecting and absorbing pipe 172 corresponds to the heat collecting pipe 4.

Solar rays fall onto the coated concentrating and power generating groove 171 after passing through the glass cover plate 173, frequency division is performed through the frequency division film 171-5, solar wave bands in a spectrum response range of the photovoltaic cells are converted into electric energy through the photovoltaic cells 171-3, and sunlight which is not in the solar wave bands is reflected to the heat collecting and absorbing pipe 172 through the coated concentrating and power generating groove 171 for heat collection. The electric energy generated by the photovoltaic cells 171-3 is transmitted through a direct current cable, the photovoltaic cells 171-3 of the adjacent energy-collecting photo-thermal and photo-electronic units 175 can be connected in series or in parallel, and then the direct current cable can be connected into the storage battery 14 for electric energy storage, or can be converted into alternating current through the inverter 15 and then be integrated into a power grid.

Preferably, the glass cover plate 173 may be a high-transmittance glass. The high-transmittance glass is highly transparent to visible light and infrared rays, so that sunlight is guaranteed to fall onto the surface of the film-coated concentrating and generating groove 171 as much as possible, the optical characteristics of the frequency division film 171-5 in the film-coated concentrating and generating groove 171 are determined according to the spectral response characteristics of the photovoltaic cell 171-3, and solar wave band high transmittance and solar wave band high reflection in the spectral response interval of the photovoltaic cell are guaranteed.

Preferably, an anti-reflection film is provided on the outer surface of the glass cover plate 173. The antireflection film can effectively reduce the reflectance of the glass surface, improve the transmittance and ensure that more sunlight is incident on the surface of the film-plated concentrating and power generating groove 171. The vacuum sealing glue layer is arranged at the joint of the protective supporting structure 177 and the glass cover plate 173, so that the tightness of the closed cavity 174 is improved, the infiltration amount of outdoor air after the closed cavity 174 is vacuumized is reduced, and a better vacuum environment is created. The cavities of the protection support structure 177 and the energy-collecting photo-thermal photoelectric unit 176 can be non-vacuum, so that normal use of the device is not affected.

Preferably, the heat collecting and absorbing pipes 172 of the plurality of the energy-collecting photo-thermal and photo-electronic units 175 disposed along the length direction of the film-coated concentrating and generating tank 171 are sequentially connected, a hot water pipe passes through the glass cover plate 173 and then enters the heat collecting and absorbing pipes 172, and a part of the hot water pipe passing through the glass cover plate 173 is sealed and disposed to avoid air entering the closed cavity 174.

Preferably, an energy-collecting photo-thermal photo-electronic unit 175 is arranged along the length direction of the film-plating light-gathering power generation groove 171, a plurality of heat-collecting absorption pipes 172 along the width direction of the film-plating light-gathering power generation groove 171 are sequentially connected in series, and connecting pipelines of two adjacent heat-collecting absorption pipes 172 are arranged outside the protection support structure 177 and penetrate through the protection support structure 177 for position sealing treatment; the outer wall of the connecting pipeline arranged outside the protection supporting structure 177 is provided with an insulating layer, so that the heat collection temperature can be further improved.

In the embodiment, the glass substrate 171-1 of the film-coated concentrating and power generating groove 171 is parabolic, which not only serves as a back plate of the photovoltaic cell 171-3, and protects and supports the back surface of the photovoltaic cell 171-3, but also plays a role in concentrating and improving the incident solar energy flow density; the cover glass 173 replaces the upper toughened glass of the conventional photovoltaic cell assembly, a protective layer is not required to be added on the upper surface of the film-coated concentrating power generation groove 1, the thickness is reduced, and compared with the groove-shaped protective glass, the processing difficulty of the cover glass 173 is low; the plurality of energy-collecting photo-thermal photoelectric units 175 are connected in parallel and collect heat simultaneously, so that on one hand, the size of the film-plating light-collecting power generation groove 171 can be reduced, the processing difficulty is reduced, and on the other hand, the hot water pipe can sequentially pass through the heat collecting pipes in a serial connection mode, and the hot water outlet temperature can be improved to the greatest extent on the basis of device miniaturization and heat collecting temperature reduction.

The closed cavity 174 is vacuumized, so that heat loss of the heat collecting and absorbing pipe 172 caused by air flow is avoided, therefore, the heat collecting temperature of the vacuum heat collecting pipe can be basically reached by adopting the non-vacuum heat collecting and absorbing pipe 172 under the same condition, the investment cost is reduced, the closed cavity 174 is in a vacuum state and is used for double protection of the film-plating light-gathering power generation groove 171, the protection support structure 177 plays a fixed protection role on the film-plating light-gathering power generation groove 171, the damage of the external environment to the film-plating light-gathering power generation groove 171 is reduced, the bottom surface of the protection support structure 177 is a plane instead of a curved surface, the carrying and the installation are convenient, and the installation stability on the uneven ground is stronger.

And a specific embodiment IV: as shown in connection with fig. 3-5, further includes a multi-mirror concentrating tracking system mounted above the concentrating divider, including a planar mirror 181, a cross bar 182, a frame post 183, a main frame 184, rollers 185, a first hinge member 186, a second hinge member 187, a third hinge member 188, a telescoping short bar 189 and a frame telescoping post 190,

two corners of one side of the main frame 184 along the arrangement direction of the cross bars 182 are connected with one end of a telescopic short bar 189, the telescopic end of the telescopic short bar 189 is connected with a frame telescopic strut 190 through a third hinging member 188, and two corners of the other side of the main frame 184 are connected with the frame strut 183 through a second hinging member 187;

the main frame 184 includes a plurality of horizontal pole 182, the both ends of horizontal pole 182 all are equipped with the gyro wheel 185, gyro wheel 185 joint is in the spout of seting up on the main frame 184 lateral wall and can follow the extending direction slip of spout, and every horizontal pole 182 all is connected with plane mirror 181 through first articulated member 186, and main frame 184 below is equipped with spotlight frequency divider, spotlight frequency divider's glass apron 173 or protection bearing structure 177 four angles are connected and four angles are located with the coplanar of main frame 184 parallel with frame pillar and the flexible pillar of frame respectively. The four corners of the glass cover plate 173 or the protection support structure 177 are connected to the frame expansion/contraction column 190 and the frame column 183, and the light-condensing/frequency-dividing device is not inclined with the expansion/contraction of the frame expansion/contraction column 190, and is always in a horizontal state.

Other combinations and connection relationships of this embodiment are the same as those of the third embodiment.

The angle of the plane mirror 181 is adjusted along with the change of the solar rays, so that the solar incident rays are reflected by the plane mirror 181 and vertically irradiated onto a condensing and frequency dividing device below, and the light rays are collected onto the heat collecting and absorbing tube 172 through the reflection of the condensing and frequency dividing device, so that the light rays are absorbed and converted into heat energy; during the angular adjustment of the plane mirrors 181, the distance between the cross bars 182 can be changed to avoid the shielding between two adjacent plane mirrors 181, which affects the collection of solar rays.

Preferably, each cross bar 182 is connected to the plane mirror 181 by at least one first hinge member 186, and when the number of first hinge members 186 is at least two, the first hinge members 186 are uniformly disposed.

Preferably, a roller motor is arranged on the roller 185 at one side of each cross bar 182, a first hinge motor for driving the plane mirror 181 to rotate is arranged on the first hinge member 186, and the frame telescopic strut 190 is electrically driven or hydraulically driven; the intelligent control system further comprises a central controller and a sensor, wherein the input end of the central controller is connected with the sensor, and the output end of the central controller is respectively connected with the roller motor, the first hinge motor and the frame telescopic strut 190.

Preferably, the sensor includes a rotation angle sensor for monitoring the rotation angle of the plane mirror 181 and an infrared sensor for monitoring the distance between the cross bars 182, and the rotation angle signal of the plane mirror 181 and the distance signal between the cross bars 182 are fed back to the central controller through the two sensors, and compared with the rotation angle of the plane mirror 181 and the distance between the cross bars 182 acquired in real time, if there is a deviation, the rotation angle of the plane mirror 181 and the distance between the cross bars 182 are adjusted according to the acquisition result of the real time signal, so that the main direction of the receiving surface of the plane mirror 181 keeps the morning to the east, the noon to the west and the afternoon to the west.

The control method comprises the following steps:

step one, determining the position and angle of the plane mirror 181 and determining the angle of the main frame 184, monitoring the related signals of the position of the sun in real time, calculating the included angles between the plane mirror 181 and the incident rays of the sun including the altitude angle, the azimuth angle, the declination angle of the sun and the time angle of the sun, and acquiring the rotation angle of the plane mirror 181, the distance between the plane mirrors 181 and the height of the frame telescopic strut 190 according to the parameters by combining the inclination angles of the plane mirror 184 under the condition of receiving as much solar energy as possible;

And step two, according to the rotation angle of the planar mirror 181, the distance between the planar mirrors 181 and the height result of the frame telescopic support 190 obtained in the step one, signals are respectively transmitted to a first control module, a second control module and a third control module through a central controller, wherein the first control module controls the first hinge motor to drive the planar mirror 181 to rotate around the central axis of the first hinge member 186, the second control module controls the roller motor to regulate and control the roller 185 to drive the cross bar 182 to horizontally move along the east-west direction, the distance between the adjacent planar mirrors 181 is changed, the third control module controls the frame telescopic support 190 to further adjust the telescopic height of the frame telescopic support 190, the telescopic length of the telescopic short bar 189 is matched with the height adjustment of the frame telescopic support 190, and the second hinge member 187 also rotates along with the change of the telescopic height, so that the inclination adjustment of the plane of the main frame 184 is realized, and as much sunlight can be vertically incident on the surface of the light-gathering and frequency dividing device after being reflected by the planar mirror 181 is ensured.

According to the embodiment, the rotation angle of the plane mirror 181 and the distance between the adjacent plane mirrors 181 are controlled, so that the conventional east-west single-axis tracking energy loss of the concentrating and frequency dividing device is reduced, on one hand, more light rays can vertically fall into the surface of the concentrating and frequency dividing device through reflection of the plane mirror 181 in a region with higher latitude when the sun is lower, on the other hand, when the distance between the plane mirrors 181 is adjusted, the shielding influence between the plane mirrors 181 is minimum, the improvement of the solar energy receiving capacity of the surface of the concentrating and frequency dividing device is facilitated, the size of the plane mirrors 181 is smaller than that of the concentrating and frequency dividing device, the control driving difficulty is reduced, the position change of the plane mirrors 181 in the control process does not occupy additional space, the mutual shielding influence of the conventional concentrating and frequency dividing device in the tracking process is not required to be considered, and the occupied area of the concentrating and frequency dividing device is reduced;

In addition, the regulation and control of the plane inclination of the main frame 184 are increased, the whole main frame 184 plane is guaranteed to track the sun movement position, the probability that the sun rays fall into the condensation frequency division device after being reflected by the plane mirror 181 is further increased, compared with the single-axis tracking technology, the energy loss is further reduced, the control of the plane inclination of the main frame 184 is realized through telescopic control, the control difficulty is low, and the position change of the main frame 184 in the control process does not occupy redundant space.

Although the present disclosure is disclosed above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and such changes and modifications would be within the scope of the disclosure.

Claims

1. A solar concentrating frequency division-crystallization energy storage heat pump air conditioning system is characterized in that: comprises a solar concentrating frequency division subsystem, a lithium bromide crystallization energy storage subsystem, an absorption cycle, a mechanical compression cycle and a preheating cycle,

The lithium bromide crystallization energy storage subsystem comprises a crystallization heat storage tank (6), a solution cavity (6-1), a condensation water cavity (6-2), a first spraying device (7), a second spraying device (8), a first hot water coil pipe (9), a second hot water coil pipe (10), a baffle plate (11), a second circulating pump (122), a third circulating pump (123) and a fifth stop valve (135),

the crystallization heat storage tank (6) is divided into a solution cavity (6-1) and a condensation water cavity (6-2) through a partition plate (11), the solution cavity (6-1) is used for filling lithium bromide solution, the condensation water cavity (6-2) is used for filling condensation water, a first hot water coil pipe (9) and a second hot water coil pipe (10) are respectively arranged in the solution cavity (6-1) and the condensation water cavity (6-2), and the upper end of the solution cavity (6-1) is communicated with the upper end of the condensation water cavity (6-2) through a fifth stop valve (135); the inlet end and the outlet end of the first hot water coil pipe (9) extend out of the solution cavity (6-1), the inlet end and the outlet end of the second hot water coil pipe (10) extend out of the condensation cavity (6-2), the bottom of the solution cavity (6-1) is connected with the inlet end of the second circulating pump (122), the outlet end of the second circulating pump (122) is connected with the first spraying device (7) in the solution cavity (6-1), the bottom of the condensation cavity (6-2) is connected with the inlet end of the third circulating pump (123), and the outlet end of the third circulating pump (123) is connected with the second spraying device (8) in the condensation cavity (6-2);

The absorption cycle comprises a source side heat exchanger (12), a user side heat exchanger (13), a fourth circulating pump (124), a fifth circulating pump (125), a first high-order hot water pipeline (51), a first low-order hot water pipeline (71), a third stop valve (133), a fourth stop valve (134), a sixth stop valve (136), a seventh stop valve (137), an eighth stop valve (138) and a ninth stop valve (139),

the inlet end of the fourth stop valve (134) is connected with the outlet end of the first high-order hot water pipeline (51), the outlet pipeline of the sixth stop valve (136) is connected with the inlet end of the user side heat exchanger (13) after being converged with the outlet pipeline of the fourth stop valve (134), the user side heat exchanger (13) is communicated with the user side air (162), the outlet end of the user side heat exchanger (13) is connected with the inlet end of the fifth circulating pump (125), and the outlet end of the fifth circulating pump (125) is respectively connected with the inlet end of the third stop valve (133) and the inlet end of the seventh stop valve (137);

the inlet end of the ninth stop valve (139) is connected with the outlet end of the first low-level hot water pipeline (71), the outlet end of the ninth stop valve (139) is connected with the inlet end of the source side heat exchanger (12), the outlet end of the source side heat exchanger (12) is connected with the inlet end of the fourth circulating pump (124), and the outlet end of the fourth circulating pump (124) is connected with the inlet end of the eighth stop valve (138);

The mechanical compression cycle comprises an evaporator (16), a compressor (17), a condenser (18) and a throttle valve (19),

the outlet of the evaporator (16) is connected with the inlet end of the compressor (17), the outlet end of the compressor (17) is connected with the inlet end of the condenser (18), the outlet end of the condenser (18) is connected with the inlet end of the throttle valve (19), the outlet end of the throttle valve (19) is connected with the inlet end of the evaporator (16), and the evaporator (16) is communicated with the outdoor air (161);

the preheating cycle comprises a source side heat exchanger (12), a condenser (18) and a sixth circulating pump (126),

the outlet end of the condenser (18) is connected with the inlet end of the source side heat exchanger (12), the outlet end of the source side heat exchanger (12) is connected with the inlet end of the sixth circulating pump (126), and the outlet end of the sixth circulating pump (126) is connected with the inlet end of the condenser (18);

the solar concentrating and frequency dividing subsystem, the crystallization energy storage subsystem and the absorption type circulation room are connected with each other, the solar concentrating and frequency dividing subsystem, the crystallization energy storage subsystem and the absorption type circulation room comprise an outlet end of a first hot water coil pipe (9) which is connected with an inlet end of a first stop valve (131) and an inlet end of a first high-position hot water pipeline (51) respectively, an outlet end of the first stop valve (131) is connected with an inlet end of a heat collecting pipe (4) in the solar concentrating and frequency dividing subsystem, an outlet end of the heat collecting pipe (4) is connected with an inlet end of a water tank (5), an outlet end of the water tank (5) is connected with an inlet end of a first circulating pump (121), an outlet end of the first circulating pump (121) is connected with an inlet end of a second stop valve (132), and an outlet end of the second stop valve (132) and an outlet end of a third stop valve (133) are converged and then are connected with an inlet end of the first hot water coil pipe (9);

The outlet end of the third hot water main pipe (43) is respectively connected with the inlet end of the first low-position hot water pipeline (71) and the inlet end of the sixth stop valve (136), and the outlet end of the seventh stop valve (137) and the outlet end of the eighth stop valve (138) are connected with the inlet end of the second hot water coil pipe (10) after being converged;

the solar concentrating frequency division subsystem is connected with the inlet end of the storage battery (14), the outlet end of the storage battery (14) is connected with the inlet end of the inverter (15), and the outlet end of the inverter (15) is respectively connected with the mains supply contact and the compressor (17).

2. A control method of a solar concentrating, frequency dividing, crystallizing and energy storing combined heat and power heat pump air conditioning system according to claim 1, characterized by:

during daytime, the first stop valve (131), the second stop valve (132), the sixth stop valve (136) and the seventh stop valve (137) are in an open state, the third stop valve (133), the fourth stop valve (134), the eighth stop valve (138) and the ninth stop valve (139) are in a closed state,

the low-level hot water at the outlet of the first hot water coil pipe (9) enters the heat collecting pipe (4) through a first stop valve (131) to be heated into high-level hot water, the first circulating pump (121) pumps the high-level hot water to be filled with the first hot water coil pipe (9) through the water tank (5) and a second stop valve (132), the second circulating pump (122) pumps lithium bromide solution to be sprayed to the surface of the first hot water coil pipe (9) through a first spraying device (7), the lithium bromide solution absorbs heat to continuously evaporate, concentrate and crystallize, part of solar high-level energy is stored in a crystallization mode, the fifth stop valve (135) is in an open state, water vapor generated by solution concentration enters the condensation water cavity (6-2) from the solution cavity (6-1) through the fifth stop valve (135), the water vapor contacts with the surface of the second hot water coil pipe (10) with lower temperature to be condensed and released, the water in the second hot water coil pipe (10) enters the user side heat exchanger (13) through the sixth stop valve (136) to heat user side air (162), and the fifth circulating pump (125) pumps the water vapor to be filled with the second hot water (137) after the temperature is lowered;

At night, the first stop valve (131), the second stop valve (132), the sixth stop valve (136) and the seventh stop valve (137) are in closed states, the third stop valve (133), the fourth stop valve (134), the eighth stop valve (138) and the ninth stop valve (139) are in open states,

the solar concentrating frequency division subsystem generates electricity, converts the electricity into alternating current through a storage battery (14) and an inverter (15) and then drives a compressor (17) to operate, when the electricity quantity is insufficient, the electric power is connected into a commercial power supply from a commercial power joint, at the moment, the mechanical compression circulation is started, the refrigerant is converted into low-temperature low-pressure refrigerant vapor after absorbing heat from outdoor air (161) through an evaporator (16), the low-temperature low-pressure refrigerant vapor is compressed into high-temperature high-pressure refrigerant vapor through the compressor (17), the high-temperature high-pressure refrigerant vapor is discharged into a preheating circulating water loop through a condenser (18) to be converted into high-temperature high-pressure refrigerant liquid, and finally the high-temperature low-pressure refrigerant liquid is converted into low-temperature low-pressure refrigerant liquid through a throttle valve (19) and then returns to the evaporator (16); the preheated hot water enters the source side heat exchanger (12) to release heat after being heated by the condenser (18), and is pumped back to the condenser (18) by the sixth circulating pump (126) after the temperature is reduced,

the water in the second hot water coil pipe (10) enters the source side heat exchanger (12) through a ninth stop valve (139) to absorb heat from the preheating circulating water pipeline and then the temperature rises, and the water with the raised temperature is pumped by the fourth circulating pump (124) to fill the second hot water coil pipe (10) through an eighth stop valve (138); the third circulating pump (123) pumps the condensed water at the bottom of the condensed water cavity (6-2) to spray to the surface of the second hot water coil (10) through the second spraying device (8), the condensed water is vaporized, the fifth stop valve (135) is in an open state, the water vapor generated by vaporization enters the solution cavity (6-1) through the fifth stop valve (135) and is absorbed by the concentrated solution sprayed on the first hot water coil (9), the concentration of the solution is reduced, the crystallization dissolution keeps a concentration dynamic balance state, the absorption process releases heat to heat hot water in the first hot water coil (9), the heated hot water enters the user side heat exchanger (13) through the fourth stop valve (134) to heat user side air (162), and the water pumped and cooled by the fifth circulating pump (125) returns to the first hot water coil (9) through the third stop valve (133).

3. A solar concentrating frequency division-crystallization energy storage heat pump air conditioning system is characterized in that: comprises a solar concentrating frequency division subsystem, a lithium bromide crystallization energy storage subsystem, an absorption type circulation, a mechanical compression circulation and a cooling water circulation,

The absorption cycle comprises a source side heat exchanger (12), a user side heat exchanger (13), a fourth circulating pump (124), a fifth circulating pump (125), a first high-order hot water pipeline (51), a first low-order hot water pipeline (71), a third stop valve (133), a fourth stop valve (134), a sixth stop valve (136), a seventh stop valve (137), an eighth stop valve (138) and a ninth stop valve (139);

the inlet end of the fourth stop valve (134) is connected with the outlet end of the first high-order hot water pipeline (51), the outlet end of the fourth stop valve (134) is connected with the inlet end of the source side heat exchanger (12) after being converged with the outlet end of the ninth stop valve (139), the outlet end of the source side heat exchanger (12) is connected with the inlet end of the fourth circulating pump (124), the outlet end of the fourth circulating pump (124) is respectively connected with the inlet end of the third stop valve (133) and the inlet end of the eighth stop valve (138),

the inlet end of the sixth stop valve (136) is connected with the outlet end of the first low-level hot water pipeline (71), the outlet end of the sixth stop valve (136) is connected with the inlet end of the user side heat exchanger (13), the outlet end of the user side heat exchanger (13) is connected with the inlet end of the fifth circulating pump (125), the user side heat exchanger (13) is communicated with the user side air (162), and the outlet end of the fifth circulating pump (125) is connected with the inlet end of the seventh stop valve (137);

the outlet of the evaporator (16) is connected with the inlet end of the compressor (17), the outlet end of the compressor (17) is connected with the inlet end of the condenser (18), the outlet end of the condenser (18) is connected with the inlet end of the throttle valve (19), the outlet end of the throttle valve (19) is connected with the inlet end of the evaporator (16), and the evaporator (16) is communicated with the air (162) at the user side;

the cooling water cycle comprises a source side heat exchanger (12), a condenser (18) and a cooling tower,

the inlet end of the condenser (18) is connected with the outlet end of the cooling tower, the outlet end of the condenser (18) is connected with the inlet end of the source side heat exchanger (12), and the outlet end of the source side heat exchanger (12) is connected with the inlet end of the cooling tower;

the solar concentrating and frequency dividing subsystem, the crystallization energy storage subsystem and the absorption type circulating room are connected with each other, the solar concentrating and frequency dividing subsystem, the crystallization energy storage subsystem and the absorption type circulating room comprise an outlet end of a first hot water coil pipe (9) which is connected with an inlet end of a first stop valve (131) and an inlet end of a first high-position hot water pipeline (51) respectively, an outlet end of the first stop valve (131) is connected with an inlet end of a heat collecting pipe (4) in the solar concentrating and frequency dividing subsystem, an outlet end of the heat collecting pipe (4) is connected with an inlet end of a water tank (5), an outlet end of the water tank (5) is connected with an inlet end of a first circulating pump (121), an outlet end of the first circulating pump (121) is connected with an inlet end of a second stop valve (132), and an outlet end of the second stop valve (132) and an outlet end of a third stop valve (133) are connected with an inlet end of the first hot water coil pipe (9) after being converged;

The outlet end of the third hot water main pipe (43) is respectively connected with the inlet end of the first low-position hot water pipeline (71) and the inlet end of the ninth stop valve (139), and the outlet end of the seventh stop valve (137) and the outlet end of the eighth stop valve (138) are connected with the inlet end of the second hot water coil pipe (10) after being converged;

4. A control method of a solar concentrating, frequency dividing, crystallizing and energy storing combined heat and power heat pump air conditioning system according to claim 3, characterized in that:

during daytime, the first stop valve (131), the second stop valve (132), the eighth stop valve (138) and the ninth stop valve (139) are in an open state, the third stop valve (133), the fourth stop valve (134), the sixth stop valve (136) and the seventh stop valve (137) are in a closed state,

the low-level hot water at the outlet of the first hot water coil pipe (9) enters the heat collecting pipe (4) through the first stop valve (131) to be heated into high-level hot water, the first circulating pump (121) pumps the high-level hot water to be filled with the first hot water coil pipe (9) after passing through the water tank (5) and the second stop valve (132), the second circulating pump (122) pumps lithium bromide solution to be sprayed to the surface of the first hot water coil pipe (9) through the first spraying device (7), the lithium bromide solution absorbs heat to continuously evaporate, concentrate and crystallize, part of solar high-level energy is stored in a crystallization mode, the fifth stop valve (135) is in an open state, water vapor generated by solution concentration enters the condensation water cavity (6-2) through the fifth stop valve (135), the water vapor contacts with the surface of the second hot water coil pipe (10) with lower temperature to be condensed and released, the water in the second hot water coil pipe (10) enters the source side heat exchanger (12) through the ninth stop valve (139) to release heat to the cooling water loop, the fourth circulating pump (124) pumps the water vapor to be filled with the eighth hot water after the temperature of the eighth stop valve (138),

The solar concentrating frequency division subsystem generates electricity, the electricity is converted into alternating current through a storage battery (14) and an inverter (15) and then drives a compressor (17) to operate, when the electricity is insufficient, the electricity is connected into a mains supply from a mains supply contact, at the moment, the mechanical compression circulation is started, the refrigerant is changed into low-temperature low-pressure refrigerant vapor after releasing cold energy to air (162) at the user side through an evaporator (16), the refrigerant is changed into high-temperature high-pressure refrigerant vapor after being compressed by the compressor (17), the refrigerant vapor is changed into high-temperature high-pressure refrigerant liquid after being released to a cooling water loop through a condenser (18), and finally the refrigerant liquid is changed into low-temperature low-pressure refrigerant liquid through a throttle valve (19) and then returns to the evaporator (16), and the continuous circulation is realized to realize refrigeration;

at night, the first stop valve (131), the second stop valve (132), the eighth stop valve (138) and the ninth stop valve (139) are in a closed state, the third stop valve (133), the fourth stop valve (134), the sixth stop valve (136) and the seventh stop valve (137) are in an open state,

the water in the second hot water coil pipe (10) enters the user side heat exchanger (13) through a sixth stop valve (136) to release cold energy to the user side air (162) and then the temperature is increased, and the water with the increased temperature is pumped by a fifth circulating pump (125) and fills the second hot water coil pipe (10) through a seventh stop valve (137); the third circulating pump (123) pumps the condensed water at the bottom of the condensed water cavity (6-2) to spray to the surface of the second hot water coil (10) through the second spraying device (8), the condensed water is vaporized, meanwhile, the fifth stop valve (135) is opened, the vapor generated by vaporization enters the solution cavity (6-1) through the fifth stop valve (135), the vapor is absorbed by the concentrated solution sprayed on the first hot water coil (9), the concentration of the solution is reduced, the crystallization dissolution ensures the concentration dynamic balance state, the absorption process releases heat to heat the hot water in the first hot water coil (9), the heated hot water enters the source side heat exchanger (12) through the fourth stop valve (134) to release heat to the cooling water loop, and the fourth circulating pump (124) pumps the cooled water to return to the first hot water coil (9) through the third stop valve (133).

5. A solar concentrating, frequency dividing, crystallizing and energy storing cogeneration heat pump air conditioning system as claimed in claim 1 or 3, wherein: the solar concentrating frequency-dividing subsystem comprises a groove type concentrator (1), a photovoltaic cell panel (2), a groove type interference film frequency divider (3) and a heat collecting pipe (4),

the solar cell is characterized in that a photovoltaic cell panel (2) is arranged above the central axis of the trough type condenser (1), the photovoltaic cell panel (2) is connected with a storage battery (14), a heat collecting tube (4) is arranged at the focal line of the trough type condenser (1), the heat collecting tube (4) is fixed on the trough type condenser (1) through a heat collecting tube bracket, and a trough type interference film frequency divider (3) is arranged below the heat collecting tube (4).

6. A solar concentrating, frequency dividing, crystallizing and energy storing cogeneration heat pump air conditioning system as claimed in claim 1 or 3, wherein: the solar concentrating frequency-dividing subsystem is a concentrating frequency-dividing device, the concentrating frequency-dividing device comprises a film plating concentrating power generation groove (171), a heat collecting absorption tube (172), a glass cover plate (173), a closed cavity (174), a concentrating photothermal photoelectric unit (175), a concentrating photothermal photoelectric unit (176) and a protective supporting structure (177),

the energy-collecting photo-thermal photoelectric unit (176) is arranged in a protection supporting structure (177) with an opening at the upper part, the energy-collecting photo-thermal photoelectric unit (176) comprises a plurality of energy-collecting photo-thermal photoelectric units (175) which are uniformly distributed, the energy-collecting photo-thermal photoelectric units (175) comprise film-plating light-gathering generating grooves (171) and heat collecting absorbing pipes (172), the end parts of two adjacent film-plating light-gathering generating grooves (171) are connected, the film-plating light-gathering generating grooves (171) at the peripheral edge are tightly connected with the peripheral inner wall of the protection supporting structure (177), the film-plating light-gathering generating grooves (171) sequentially comprise a glass substrate (171-1), a lower packaging film (171-2), a photovoltaic cell piece (171-3), an upper packaging film (171-4) and a frequency dividing film (171-5) from bottom to top, the glass substrate (171-1) is of a groove-shaped structure, the cross section of the lower packaging film (171-2), the photovoltaic cell piece (171-3), the upper packaging film (171-4) and the frequency dividing film (171-5) are sequentially and flexibly attached to the glass substrate (171-1); the heat collection absorption pipes (172) of the energy-collecting photo-thermal photoelectric units (175) are all arranged on the focal line of the film plating light-collecting power generation groove (171), a glass cover plate (173) is arranged above the energy-collecting photo-thermal photoelectric units (176), a cavity between the two is a closed cavity (174), and the interior of the closed cavity (174) is vacuumized.

7. The solar concentrating, frequency dividing, crystallizing and energy storing combined heat and power heat pump air conditioning system as claimed in claim 6, wherein: the system is arranged above the condensation frequency division device and comprises a plane mirror (181), a cross rod (182), a frame pillar (183), a main frame (184), a roller (185), a first hinging member (186), a second hinging member (187), a third hinging member (188), a telescopic short rod (189) and a frame telescopic pillar (190),

two corners of one side of the main frame (184) along the arrangement direction of the cross rod (182) are connected with one end of a telescopic short rod (189), the telescopic end of the telescopic short rod (189) is connected with a frame telescopic strut (190) through a third hinging member (188), and two corners of the other side of the main frame (184) are connected with a frame strut (183) through a second hinging member (187);

main frame (184) include a plurality of horizontal pole (182), the both ends of horizontal pole (182) all are equipped with gyro wheel (185), gyro wheel (185) joint is in the spout of seting up on main frame (184) lateral wall and can follow the extending direction slip of spout, and every horizontal pole (182) all are connected with plane mirror (181) through first articulated member (186), and main frame (184) below is equipped with spotlight frequency divider, four angles of spotlight frequency divider's glass apron (173) or protection bearing structure (177) are connected and four angles are located the coplanar with main frame (184) parallel with frame pillar (183) respectively and frame telescopic strut (190).

8. The solar concentrating, frequency dividing, crystallizing and energy storing combined heat and power heat pump air conditioning system as claimed in claim 7, wherein: the glass cover plate (173) may be a high-transmittance glass; an antireflection film is arranged on the outer surface of the glass cover plate (173).

9. The solar concentrating, frequency dividing, crystallizing and energy storing combined heat and power heat pump air conditioning system as claimed in claim 8, wherein: a roller motor is arranged on a roller (185) at one side of each cross rod (182), a first hinge motor for driving the plane mirror (181) to rotate is arranged on the first hinge member (186), and the frame telescopic support (190) is electrically driven or hydraulically driven; the intelligent control device further comprises a central controller and a sensor, wherein the input end of the central controller is connected with the sensor, and the output end of the central controller is respectively connected with the roller motor, the first hinge motor and the frame telescopic strut (190).

10. The solar concentrating, frequency dividing, crystallizing and energy storing combined heat and power heat pump air conditioning system as claimed in claim 9, wherein: the sensor comprises a rotation angle sensor for monitoring the rotation angle of the plane mirror (181) and an infrared sensor for monitoring the distance between the cross bars (182), and is used for feeding back rotation angle signals of the plane mirror (181) and distance signals of the cross bars (182) to the central controller through the two sensors, comparing the rotation angle signals with the rotation angle of the plane mirror (181) and the distance between the cross bars (182) acquired in real time, and if deviation exists, adjusting the rotation angle of the plane mirror (181) and the distance between the cross bars (182) according to the acquisition result of the real-time signals, so that the main direction of the receiving surface of the plane mirror (181) keeps the morning towards east, the noon level and the afternoon towards west.