CN108645073B - Solar energy-powered absorption refrigeration system - Google Patents
Solar energy-powered absorption refrigeration system Download PDFInfo
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- CN108645073B CN108645073B CN201810414567.1A CN201810414567A CN108645073B CN 108645073 B CN108645073 B CN 108645073B CN 201810414567 A CN201810414567 A CN 201810414567A CN 108645073 B CN108645073 B CN 108645073B
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 27
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 18
- 239000006096 absorbing agent Substances 0.000 claims abstract description 57
- 238000004146 energy storage Methods 0.000 claims abstract description 48
- 230000008859 change Effects 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 239000000243 solution Substances 0.000 claims description 29
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000012546 transfer Methods 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 7
- 239000011232 storage material Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000005855 radiation Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012782 phase change material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000886 photobiology Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
- F25B27/007—Machines, plants or systems, using particular sources of energy using solar energy in sorption type systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/04—Arrangement or mounting of control or safety devices for sorption type machines, plants or systems
Abstract
The invention provides a solar energy-powered absorption refrigeration system, which comprises a solar energy-powered device, a refrigeration device, a controller and a pressure tank, wherein the solar energy-powered device is connected with the refrigeration device; the solar energy supply device comprises a solar heat collection device and a phase change energy storage box, wherein the solar heat collection device comprises an asymmetric composite plane condenser, an absorber and a bracket; the refrigerating device comprises an absorber, a steam generator, a condenser and an evaporator; the controller automatically controls the whole system to work according to a preset program. The invention aims to provide a high-efficiency, clean and energy-saving solar heat collection system which is used as a main heat source, is electrically heated to assist in energy supply, adopts a phase-change energy storage box, improves the heat energy utilization rate of the heat collection system, and provides a stable heat source for a refrigerating system.
Description
Technical Field
The invention relates to a refrigerating system, in particular to an absorption refrigerating system powered by a composite plane condenser, and belongs to the technical field of solar photo-thermal utilization.
Background
With the increase of economy and the advancement of technology and the increase of population, the demand of people for energy is increasing, the dependence of the economy of China on energy is increasing in the future, and the sustainable supply of energy is under great pressure. With the world's increasing energy demand, traditional fossil energy has failed to meet the increasing demands of people due to its limited and non-renewable nature. With the massive consumption of fossil energy and the rapid environmental destruction, new energy technology has become one of the technical fields with decisive influence in the world economic development of this century. Solar energy is valued by various countries because of the advantages of inexhaustible solar energy, no environmental pollution, free use, no transportation and the like.
At present, application and research on solar energy conversion, collection, storage and transportation are being carried out, and the solar energy utilization is mainly carried out through utilization approaches such as photo-thermal, photovoltaic, photochemistry and photo-biology. In the development and utilization of solar energy, the solar energy photo-thermal conversion technology is the most mature and practical application, and has a renewable resource utilization technology with better economy. The basic principle of solar heat utilization is to collect solar radiation energy by a heat collector, and convert the solar radiation energy into heat energy for utilization through interaction with substances. The most currently used heat collectors can be classified into non-concentrating type heat collectors (flat plate type heat collector, vacuum tube type heat collector, heat pipe type heat collector, etc.) and concentrating type heat collectors (slot type focusing heat collector, tower type focusing heat collector, dish type focusing heat collector, fresnel concentrator, etc.).
The non-concentrating heat collector usually uses water as a working medium, is usually used for domestic heat, is difficult to obtain a heat source with a higher temperature of more than 150 ℃, is used as a heat source of an absorption refrigeration system, drives the refrigeration system to continuously work, generates continuous cold energy, and is used by people. The tracking type solar concentrating heat collection system can enable working media to obtain higher heat collection temperature (generally higher than 300 ℃), and the obtained high-temperature heat source is used for driving an absorption refrigerating unit and does not have good heat utilization efficiency. On the other hand, the tracking type solar concentrating and heat collecting system is difficult to construct, high in cost, complex in maintenance and the like, and has no good economic benefit when being used in a coupling way with absorption refrigeration.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides an absorption refrigeration system powered by a composite plane condenser, and the heat transfer substance reaches about 200 ℃ through heat collection of an asymmetric composite plane condenser, so that the system is used for driving an absorption refrigeration unit and has the characteristics of no need of a tracking device, easiness in integrated construction, stable running state, high light field utilization and the like. The problem that the temperature level of the non-concentrating solar heat collection system for supplying energy to the absorption refrigerating unit is insufficient is effectively solved, and meanwhile, the economy of the refrigerating system taking solar energy as driving force is improved. The high-efficiency long-term stable operation of the solar energy-powered absorption refrigeration system is realized.
The technical scheme adopted by the invention is as follows:
a solar energy powered absorption refrigeration system, comprising a solar energy powered device, a refrigeration device, a controller 1 and a pressure tank 23;
the solar energy supply device comprises a solar heat collection device and a phase change energy storage box 28; the solar heat collecting device comprises an asymmetric composite plane condenser 40, an absorber 43 and a bracket 39, wherein the asymmetric composite plane condenser 40 is formed by improving a composite parabolic condenser and comprises two reflecting plates, each reflecting plate consists of more than one plane mirror, and the two reflecting plates are asymmetrically arranged; the asymmetric compound plane condenser 40 is installed on the bracket 39 in the north-south direction (the two reflecting plates face the north-south direction respectively), and the absorber 43 is installed above the joint of the two reflecting plates of the asymmetric compound plane condenser 40; the absorber outlet 41 is communicated with the phase change energy storage box inlet I29 through a pipeline, and a temperature sensor I42 is arranged on the pipeline; the phase change energy storage box outlet I31 is communicated with the absorber inlet 44 through a pipeline, and the pipeline is provided with an electromagnetic valve I32 and a circulating pump 35; a temperature sensor II 30 is arranged in the phase change energy storage box 28;
the refrigeration device comprises an absorber 2, a steam generator 16, a condenser 11 and an evaporator 5; the absorber solution outlet 45 is communicated with the steam generator solution inlet 18 through a pipeline, and the pipeline is provided with a solution pump 38; the solution outlet 14 of the steam generator is communicated with the solution inlet 7 of the absorber through a pipeline, and a pressure reducing valve I9 is arranged on the pipeline; the steam outlet 19 of the steam generator is communicated with the condenser inlet 12 through a pipeline; the condenser outlet 10 is communicated with the evaporator inlet 6 through a pipeline, and a pressure reducing valve II 8 is arranged on the pipeline; a cooling water device I13 is arranged in the condenser 11; the evaporator outlet 4 is communicated with the absorber gas inlet 3 through a pipeline; a cooling water device II 46 is arranged in the absorber 2; a heating pipe 17 and an auxiliary heater 15 are arranged in the steam generator 16;
the inlet of the heating pipe 17 is communicated with an outlet II 34 of the phase-change energy storage box through a pipeline, and a variable frequency pump 37, a temperature control valve 27 and a temperature sensor III 24 are arranged on the pipeline; the outlet of the heating pipe 17 is communicated with the inlet of a pressure tank 23 through a pipeline, an electromagnetic valve II 21 is arranged on the pipeline, a pressure tank controller 22 is arranged on the pressure tank 23, and a pressure sensor is arranged inside the pressure tank 23 and connected with the pressure tank controller 22; the outlet of the pressure tank 23 is communicated with an inlet II 26 of the phase-change energy storage box through a pipeline, and a check valve 25 is arranged on the pipeline;
the absorber 43 is connected with the phase-change energy storage tank 28, and the heat transfer material is arranged in the pipeline connected among the phase-change energy storage tank 28, the steam generator 16 and the pressure tank 23;
the pressure reducing valve I9, the pressure reducing valve II 8, the electromagnetic valve I32, the electromagnetic valve II 21, the pressure tank controller 22, the auxiliary heater 15, the solution pump 38, the variable frequency pump 37, the temperature control valve 27, the temperature sensor I42, the temperature sensor II 30, the temperature sensor III 24 and the circulating pump 35 are all connected with the controller 1 through wires.
Preferably, the absorber 43 is a circular absorber.
Preferably, the solution in absorber 2 is an aqueous lithium bromide solution.
Preferably, the phase change energy storage material within the phase change energy storage tank 28 is pentaerythritol.
Preferably, the heat transfer substance in the conduit is a heat transfer oil.
Preferably, the pipe is a seamless steel pipe (since an asymmetric compound planar concentrator can heat a heat transfer material to about 200 ℃ and the phase change material is not corrosive, a seamless steel pipe is used as the conveying pipe).
Preferably, the auxiliary heater 15 is an electric heating device.
The working process comprises the following steps: the solar heat collecting device absorbs solar radiation energy (sunlight reaches the absorber in two ways:direct on the absorber 43; />Sunlight reaches the reflecting plate of the asymmetric compound plane condenser 40, and reaches the suction through secondary reflectionAnd a receiving body 43. ) And the heat transfer substances in the pipeline absorb heat and flow in the pipeline under the action of the circulating pump 35, the heat is transferred to the phase-change energy storage box 28, the phase-change energy storage material absorbs heat to the phase-change temperature and then changes phase, the phase-change energy storage material changes from solid to liquid, the heat is continuously absorbed, the heat is stored in the phase-change energy storage box 28, and the heat is provided for the steam generator 16; when the temperature measured by the temperature sensor I42 is lower than the temperature measured by the temperature sensor II 30, the electromagnetic valve I32 and the circulating pump 35 are closed;
the refrigerating device adopts lithium bromide as an absorbent and water as a refrigerant, lithium bromide aqueous solution is placed in the absorber 2, the solution pump 38 pumps the lithium bromide aqueous solution into the steam generator 16, under the heating of heat energy provided by the phase-change energy storage box 28 or the auxiliary heater 15 (when the heat energy provided by the phase-change energy storage box 28 is lower than the rated working temperature of the steam generator 16, the auxiliary heater 15 is started to heat), water evaporates to generate high-temperature and high-pressure water vapor, the high-temperature and high-pressure water vapor escapes from the steam outlet 19 of the steam generator to the condenser 11, the high-temperature and low-temperature gas is cooled to be high-pressure and low-temperature gas, the low-pressure and low-temperature gas is decompressed to be low-pressure and low-temperature gas through the decompression valve II 8, the low-temperature gas enters the evaporator 5 to evaporate, and the heat in the evaporator is taken away, so that the aim of refrigeration is achieved. The evaporated water vapor returns to the absorber 2 (when the pressure in the vapor generator 16 is too high, part of lithium bromide aqueous solution in the vapor generator 16 flows back to the absorber 2 through the pressure reducing valve I9, and as the concentration of lithium bromide in the absorber 2 is higher, the water vapor is sucked into the absorber 2 from the absorber gas inlet 3) and becomes water after condensation, the lithium bromide aqueous solution is diluted and pumped into the vapor generator 16 through the solution pump 38, and the process is continuously circulated, so that the refrigeration cycle is realized;
a temperature control valve 27 and a temperature sensor III 24 are arranged on a pipeline between the heating pipe 17 and the phase-change energy storage box 28, a preset temperature is set through the temperature control valve 27, when the temperature measured by the temperature sensor III 24 is lower than the preset temperature, the temperature control valve 27 is closed, and the heat transfer substance in the pipe stops flowing;
a solenoid valve II 21 is also arranged on the pipeline between the heating pipe 17 and the pressure tank 23, and is used for preventing unnecessary heat energy loss caused by the fact that the heat energy provided by the auxiliary heating device 15 to the steam generator 16 is consumed by the heat transfer substance in the pipe when the phase change energy storage box 28 does not provide heat energy to the steam generator 16;
a check valve 25 is arranged on the pipeline between the pressure tank 23 and the phase change energy storage box 28 to prevent the heat transfer material in the pipeline from flowing back;
because solar radiation has timeliness, the temperature of the solar energy supply device is not constant, so that the pressure in the pipeline is unstable, and the pressure tank 23 is matched with the variable frequency pump 37 to balance the pressure in the pipeline;
the controller collects data through the temperature sensor and the pressure sensor, and automatically controls the opening and closing of each valve and each pump according to a preset program, so that the working efficiency of the whole system is improved, and the electric quantity is saved.
Compared with the prior art, the invention has the beneficial effects that:
1. the heat collecting device adopts an asymmetric composite plane condenser, an asymmetric structure is not influenced by the inclination angle of the heat collector, the composite plane structure has no surface tension, and the plane is not easy to deform; compared with the traditional parabolic concentrator, the asymmetric compound plane concentrator is simple to manufacture, can accept solar rays with wider angles, absorbs more solar radiation, effectively improves the photo-thermal conversion performance of the system, improves the lighting quantity and the heat collection quantity, reduces the cost, simultaneously obtains higher heat collection efficiency and improves the heat collection performance of the heat collector;
2. pentaerythritol is used as a phase change energy storage material, the phase change temperature is 188 ℃, the latent heat is large (290 KJ/Kg), and the phase change energy storage material is nontoxic and noncorrosive, has low price and is easy to manufacture. The solar radiation energy is stored in the phase change material in a peak clipping and valley filling mode, and then released in the evening and in overcast and rainy days, so that the efficiency of the heat collection system is improved, and meanwhile, the electric quantity is saved;
3. the temperature control valve is adopted to balance the temperature in the steam generator, so that the influence of unstable temperature of the heat collection system caused by the change of solar radiation on the working efficiency of the refrigeration system is avoided;
4. the pressure tank is matched with the variable frequency pump, so that the pressure is automatically balanced when the pressure of the system is unstable due to temperature change, and the device loss caused by frequent start and stop of the variable frequency pump is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of an asymmetric compound planar concentrator heat collection system;
in the figure: the absorber comprises a 1-controller, a 2-absorber, a 3-absorber gas inlet, a 4-evaporator outlet, a 5-evaporator, a 6-evaporator inlet, a 7-absorber solution inlet, a 8-pressure reducing valve II, a 9-pressure reducing valve I, a 10-condenser outlet, a 11-condenser, a 12-condenser inlet, a 13-cooling water device I, a 14-steam generator solution outlet, a 15-auxiliary heater, a 16-steam generator, a 17-heating pipe, a 18-steam generator solution inlet, a 19-steam generator steam outlet, a 20-heating pipe outlet, a 21-electromagnetic valve II, a 22-pressure tank controller, a 23-pressure tank, a 24-temperature sensor III, a 25-check valve, a 26-phase-change energy storage tank inlet II, a 27-temperature control valve, a 28-phase-change energy storage tank, a 29-phase-change energy storage tank inlet I, a 30-temperature sensor II, a 31-phase-change energy storage tank outlet I, a 32-electromagnetic valve I, a 33-pipeline, a 34-phase-change energy storage tank outlet II, a 35-circulation pump, a 36-wire, a 37-variable frequency pump, a 38-liquid pump, a 39-solution pump, a 40-symmetrical support, a 40-symmetrical plane absorber I, a 45-absorber, a 43-absorber, and a temperature absorber.
Detailed Description
Example 1
As shown in fig. 1, a solar energy powered absorption refrigeration system comprises a solar energy powered device, a refrigeration device, a controller 1 and a pressure tank 23;
the solar energy supply device comprises a solar heat collection device and a phase change energy storage box 28; the solar heat collecting device comprises an asymmetric composite plane condenser 40, an absorber 43 and a bracket 39, as shown in fig. 2, wherein the asymmetric composite plane condenser 40 is formed by improving a composite parabolic condenser and comprises two reflecting plates, each reflecting plate consists of more than one plane mirror, and the two reflecting plates are asymmetrically arranged; the asymmetric compound plane condenser 40 is installed on the bracket 39 in the north-south direction (the two reflecting plates face the north-south direction respectively), and the absorber 43 is installed above the joint of the two reflecting plates of the asymmetric compound plane condenser 40; the absorber outlet 41 is communicated with the phase change energy storage box inlet I29 through a pipeline, and a temperature sensor I42 is arranged on the pipeline; the phase change energy storage box outlet I31 is communicated with the absorber inlet 44 through a pipeline, and the pipeline is provided with an electromagnetic valve I32 and a circulating pump 35; a temperature sensor II 30 is arranged in the phase change energy storage box 28;
the refrigeration device comprises an absorber 2, a steam generator 16, a condenser 11 and an evaporator 5; the absorber solution outlet 45 is communicated with the steam generator solution inlet 18 through a pipeline, and the pipeline is provided with a solution pump 38; the solution outlet 14 of the steam generator is communicated with the solution inlet 7 of the absorber through a pipeline, and a pressure reducing valve I9 is arranged on the pipeline; the steam outlet 19 of the steam generator is communicated with the condenser inlet 12 through a pipeline; the condenser outlet 10 is communicated with the evaporator inlet 6 through a pipeline, and a pressure reducing valve II 8 is arranged on the pipeline; a cooling water device I13 is arranged in the condenser 11; the evaporator outlet 4 is communicated with the absorber gas inlet 3 through a pipeline; a cooling water device II 46 is arranged in the absorber 2; a heating pipe 17 and an auxiliary heater 15 are arranged in the steam generator 16;
the inlet of the heating pipe 17 is communicated with an outlet II 34 of the phase-change energy storage box through a pipeline, and a variable frequency pump 37, a temperature control valve 27 and a temperature sensor III 24 are arranged on the pipeline; the outlet of the heating pipe 17 is communicated with the inlet of a pressure tank 23 through a pipeline, an electromagnetic valve II 21 is arranged on the pipeline, a pressure tank controller 22 is arranged on the pressure tank 23, and a pressure sensor is arranged inside the pressure tank 23 and connected with the pressure tank controller 22; the outlet of the pressure tank 23 is communicated with an inlet II 26 of the phase-change energy storage box through a pipeline, and a check valve 25 is arranged on the pipeline;
the absorber 43 is connected with the phase-change energy storage tank 28, and the heat transfer material is arranged in the pipeline connected among the phase-change energy storage tank 28, the steam generator 16 and the pressure tank 23;
the pressure reducing valve I9, the pressure reducing valve II 8, the electromagnetic valve I32, the electromagnetic valve II 21, the pressure tank controller 22, the auxiliary heater 15, the solution pump 38, the variable frequency pump 37, the temperature control valve 27, the temperature sensor I42, the temperature sensor II 30, the temperature sensor III 24 and the circulating pump 35 are all connected with the controller 1 through wires.
Example 2
The present embodiment is basically the same in structure as embodiment 1, except that the absorber 43 is a circular absorber.
Example 3
The structure of this example is substantially the same as example 1, except that the solution in the absorber 2 is an aqueous lithium bromide solution.
Example 4
The structure of this embodiment is substantially the same as that of embodiment 1, except that the phase change energy storage material in the phase change energy storage tank 28 is pentaerythritol.
Example 5
The structure of this embodiment is substantially the same as that of embodiment 1, except that the heat transfer substance in the pipe is heat transfer oil.
Example 6
The structure of this example is substantially the same as example 1, except that the pipe is a GB3087 seamless steel pipe.
Example 7
The present embodiment is basically the same in structure as embodiment 1, except that the auxiliary heater 14 is an electric heating device.
Claims (5)
1. A solar energy powered absorption refrigeration system, comprising a solar energy powered device, a refrigeration device, a controller (1) and a pressure tank (23);
the solar energy supply device comprises a solar heat collection device and a phase change energy storage box (28); the solar heat collection device comprises an asymmetric composite plane condenser (40), an absorber (43) and a bracket (39), wherein the asymmetric composite plane condenser (40) is formed by improving a composite parabolic condenser and comprises two reflecting plates, each reflecting plate consists of more than one plane mirror, and the two reflecting plates are asymmetrically arranged; the asymmetric composite plane condenser (40) is installed on the bracket (39) in the north-south direction, and the absorber (43) is installed above the joint of the two reflecting plates of the asymmetric composite plane condenser (40); the absorber outlet (41) is communicated with the phase change energy storage box inlet I (29) through a pipeline, and a temperature sensor I (42) is arranged on the pipeline; the phase change energy storage box outlet I (31) is communicated with the absorber inlet (44) through a pipeline, and an electromagnetic valve I (32) and a circulating pump (35) are arranged on the pipeline; a temperature sensor II (30) is arranged in the phase change energy storage box (28);
the refrigeration device comprises an absorber (2), a steam generator (16), a condenser (11) and an evaporator (5); the absorber solution outlet (45) is communicated with the steam generator solution inlet (18) through a pipeline, and a solution pump (38) is arranged on the pipeline; the solution outlet (14) of the steam generator is communicated with the solution inlet (7) of the absorber through a pipeline, and a pressure reducing valve I (9) is arranged on the pipeline; a steam outlet (19) of the steam generator is communicated with the condenser inlet (12) through a pipeline; the condenser outlet (10) is communicated with the evaporator inlet (6) through a pipeline, and a pressure reducing valve II (8) is arranged on the pipeline; a cooling water device I (13) is arranged in the condenser (11); the evaporator outlet (4) is communicated with the absorber gas inlet (3) through a pipeline; a cooling water device II (46) is arranged in the absorber (2); a heating pipe (17) and an auxiliary heater (15) are arranged in the steam generator (16);
an inlet of the heating pipe (17) is communicated with an outlet II (34) of the phase-change energy storage box through a pipeline, and a variable frequency pump (37), a temperature control valve (27) and a temperature sensor III (24) are arranged on the pipeline; the outlet of the heating pipe (17) is communicated with the inlet of the pressure tank (23) through a pipeline, the pipeline is provided with an electromagnetic valve II (21), the pressure tank (23) is provided with a pressure tank controller (22), and a pressure sensor is arranged in the pressure tank (23) and is connected with the pressure tank controller (22); the outlet of the pressure tank (23) is communicated with an inlet II (26) of the phase-change energy storage box through a pipeline, and a check valve (25) is arranged on the pipeline;
the absorber (43) is connected with the phase-change energy storage box (28) in a pipeline, and the pipeline connected among the phase-change energy storage box (28), the steam generator (16) and the pressure tank (23) is provided with heat transfer substances;
the pressure reducing valve I (9), the pressure reducing valve II (8), the electromagnetic valve I (32), the electromagnetic valve II (21), the pressure tank controller (22), the auxiliary heater (15), the solution pump (38), the variable frequency pump (37), the temperature control valve (27), the temperature sensor I (42), the temperature sensor II (30), the temperature sensor III (24) and the circulating pump (35) are all connected with the controller (1) through wires;
the absorber (43) is a round absorber;
the solution in the absorber (2) is lithium bromide aqueous solution.
2. An absorption refrigeration system according to claim 1, wherein the phase change energy storage material in the phase change energy storage tank (28) is pentaerythritol.
3. The absorption refrigeration system according to claim 1 wherein the heat transfer material in the conduit is a heat transfer oil.
4. The absorption refrigeration system according to claim 1 wherein the tube is a seamless steel tube.
5. Absorption refrigeration system according to claim 1, wherein the auxiliary heater (15) is an electric heating device.
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| CN201810414567.1A CN108645073B (en) | 2018-05-03 | 2018-05-03 | Solar energy-powered absorption refrigeration system |
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| CN201810414567.1A CN108645073B (en) | 2018-05-03 | 2018-05-03 | Solar energy-powered absorption refrigeration system |
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| CN108645073B true CN108645073B (en) | 2023-12-26 |
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