CN111380390A - Hot and cold water system based on photovoltaic heat - Google Patents
Hot and cold water system based on photovoltaic heat Download PDFInfo
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- CN111380390A CN111380390A CN202010135056.3A CN202010135056A CN111380390A CN 111380390 A CN111380390 A CN 111380390A CN 202010135056 A CN202010135056 A CN 202010135056A CN 111380390 A CN111380390 A CN 111380390A
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- heat exchanger
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- heat exchange
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 119
- 238000010248 power generation Methods 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000012266 salt solution Substances 0.000 claims description 32
- 230000008929 regeneration Effects 0.000 claims description 16
- 238000011069 regeneration method Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000002557 mineral fiber Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005338 heat storage Methods 0.000 claims description 2
- 239000012943 hotmelt Substances 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims 2
- 238000000034 method Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 238000007710 freezing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- -1 on the other hand Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
- F28D2020/0047—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material using molten salts or liquid metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a photovoltaic heat-based cold and hot water system which comprises a water chilling unit and a photovoltaic module, wherein the water chilling unit comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger and a fifth heat exchanger, the photovoltaic module comprises a plurality of photovoltaic power generation modules, a first sprayer and a first liquid collecting tank are correspondingly arranged on the upper side and the lower side of the first heat exchanger, a second sprayer and a second liquid collecting tank are correspondingly arranged on the upper side and the lower side of the second heat exchanger, a third sprayer and a third liquid collecting tank are correspondingly arranged on the upper side and the lower side of the fifth heat exchanger, each photovoltaic power generation module comprises a frame and a photovoltaic panel installed in the frame, a radiator is arranged on the lower side surface of the photovoltaic panel, and two ports of all radiators in the photovoltaic module after being connected in parallel are correspondingly connected with two ports of the fifth heat exchanger. The energy-saving device has the advantages of simple structure, stable performance, safety, reliability and high energy efficiency ratio.
Description
Technical Field
The invention relates to the field of photovoltaic power generation and air conditioning, in particular to a cold and hot water system for regenerating salt solution by utilizing photovoltaic heat.
Background
With the development of economy and society, people have stronger environmental awareness, and in order to protect the environment and reduce the application of primary energy, a photovoltaic power generation system and a ground source heat pump system are rapidly developed and applied. The photovoltaic power generation system generally comprises a plurality of photovoltaic power generation modules, the power generation power of the photovoltaic power generation modules can be reduced along with the increase of the temperature, mainly because the electric load of the photovoltaic panel can move faster due to the increase of the temperature, and the electric field formed by the dopants can only capture less carriers. In order to solve the problem that the generated power of the photovoltaic power generation module decreases along with the increase of the temperature, a technical means of adding a radiator to the photovoltaic panel is usually adopted by a person skilled in the art, and the heat generated by the photovoltaic panel is discharged through the radiator to keep the temperature of the photovoltaic panel relatively low, so that the heat is wasted, and the radiator of the existing photovoltaic power generation module has the problems of complex structure, large occupied space, low heat exchange efficiency and poor heat dissipation effect, so that the power generation efficiency of the photovoltaic power generation module is influenced. Along with the increase of the service life of the ground source heat pump system, more and more heat can be taken out of the soil, the temperature of the soil can be lower and lower, the working efficiency of the ground source heat pump system can be poorer and poorer, and the service life is influenced.
Disclosure of Invention
The invention aims to provide a photovoltaic heat-based cold and hot water system which has the advantages of simple structure, stable performance, safety, reliability and high energy efficiency ratio.
In order to solve the problems in the prior art, the invention provides a photovoltaic heat-based cold and hot water system, which comprises a water chilling unit and a photovoltaic module, wherein the water chilling unit comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger and a fifth heat exchanger, the photovoltaic module comprises a plurality of photovoltaic power generation modules, the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger are sequentially arranged from left to right, a first sprayer and a first liquid collecting tank are correspondingly arranged on the upper side and the lower side of the first heat exchanger, two ports of the first heat exchanger are correspondingly connected with two ports of the fourth heat exchanger to form a first heat exchange circulation loop, a second sprayer and a second liquid collecting tank are correspondingly arranged on the upper side and the lower side of the second heat exchanger, the second sprayer and the second liquid collecting tank are respectively connected with a high-temperature source to form a spraying circulation loop, two ports of the third heat exchanger are respectively connected with the tail end of a user side to form a cold water circulation loop, a third sprayer and a third liquid collecting tank are correspondingly arranged on the upper side and the lower side of the fifth heat exchanger, and the third sprayer and the third liquid collecting tank are correspondingly connected with the first liquid collecting tank and the first sprayer to form a saline solution regeneration circulation loop; the photovoltaic power generation module comprises a frame and a photovoltaic plate installed in the frame, radiators are arranged on the lower side face of the photovoltaic plate, and two ports of all the radiators in the photovoltaic module after being connected in parallel correspond to two ports of the fifth heat exchanger to form a second heat exchange circulation loop.
Furthermore, the photovoltaic heat-based cold and hot water system further comprises a ground source heat pump unit and an underground heat exchanger, two ports on the primary side of the ground source heat pump unit, two ports of the underground heat exchanger and two ports of all radiators in the photovoltaic module after being connected in parallel are sequentially connected to form a third heat exchange circulation loop, and two ports on the secondary side of the ground source heat pump unit are respectively connected with the tail end of the user side to form a hot water circulation loop.
Furthermore, the invention relates to a photovoltaic heat-based cold and hot water system, wherein two branches of the third heat exchange circulation loop are correspondingly connected with two branches of the second heat exchange circulation loop through three-way control valves respectively, and two branches of the hot water circulation loop are correspondingly connected with two branches of the cold water circulation loop through three-way control valves respectively; the salt solution regeneration circulation loop is internally provided with a solution storage tank, the second heat exchange circulation loop is internally provided with a heat storage water tank, and a plate heat exchanger is arranged between the two branches of the second heat exchange circulation loop.
Furthermore, the invention relates to a photovoltaic heat-based cold and hot water system, wherein the radiator comprises a capillary network bonded on the lower side surface of the photovoltaic panel through adhesive glue, the left end and the right end of the capillary network are respectively provided with a communicating pipe, and the communicating pipes are provided with pipe joints.
Further, the photovoltaic heat-based cold and hot water system comprises a frame, wherein the upper sides of four sides of the frame are respectively provided with an upper edge extending inwards, the lower sides of the front side and the rear side of the frame are respectively provided with a lower edge extending inwards, and the inner sides of the left side and the right side of the frame are respectively provided with a limiting clamping table; the photovoltaic panel is installed between the limiting clamping tables of the frame, and the periphery of the upper side surface of the photovoltaic panel is respectively attached to the corresponding upper edges; the communicating pipes at the two ends of the capillary network are positioned at the lower sides of the corresponding limiting clamping tables; the photovoltaic power generation module also comprises a plurality of pressure bars which are distributed at intervals along the left-right direction, the pressure bars at the leftmost side and the rightmost side are respectively pressed on the corresponding communicating pipes and the two ends of the pressure bars are respectively connected with the corresponding lower edges through the connecting plates, and the middle pressure bar is pressed on the capillary net and the two ends of the pressure bar are respectively connected with the corresponding lower edges through the connecting plates.
Further, the invention relates to a photovoltaic heat-based cold and hot water system, wherein heat insulation layers made of mineral fibers are respectively filled between adjacent pressure rods on the lower side of the radiator; the lower side of the heat-insulating layer is provided with a covering layer for preventing ultraviolet rays.
Further, the invention relates to a photovoltaic heat-based cold and hot water system, wherein the first heat exchanger, the third heat exchanger, the fourth heat exchanger and the fifth heat exchanger are inner-cooling type plastic heat exchangers, and the second heat exchanger is a filler type plastic heat exchanger.
Further, the cold and hot water system based on photovoltaic heat is characterized in that the inner-cooling type plastic heat exchanger is formed by combining a plurality of mutually communicated heat exchange modules, each heat exchange module comprises a plurality of heat exchange tubes, one ends of the plurality of heat exchange tubes are mutually communicated through a main tube, the other ends of the plurality of heat exchange tubes are mutually communicated through another main tube, the main tubes are of square tube structures, the front side wall and the rear side wall of each main tube are respectively provided with two first connectors, and the upper end and the lower end of each main tube are respectively provided with a second connector; the heat exchange modules in the inner-cooling plastic heat exchanger are in hot-melt sealing connection through the first interface or the second interface.
Furthermore, the invention relates to a photovoltaic heat-based cold and hot water system, wherein a plurality of heat exchange tubes in the heat exchange module are divided into a plurality of layers which are distributed at intervals along the front-rear direction, each layer comprises a plurality of heat exchange tubes which are uniformly distributed along the up-down direction, and the heat exchange tubes of adjacent layers are distributed in a staggered manner along the up-down direction.
Further, the invention relates to a photovoltaic heat-based cold and hot water system, wherein the ground source heat pump unit comprises a compressor, an evaporator, a throttle valve and a condenser, the secondary side of the evaporator is used as the primary side of the ground source heat pump unit, the secondary side of the condenser is used as the secondary side of the ground source heat pump unit, and the compressor, the primary side of the evaporator, the throttle valve and the primary side of the condenser are connected to form a heat pump circulation loop.
Compared with the prior art, the photovoltaic heat-based cold and hot water system has the following advantages: the invention arranges a water chilling unit and a photovoltaic module, wherein the water chilling unit comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger and a fifth heat exchanger, the photovoltaic module is provided with a plurality of photovoltaic power generation modules, the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger are sequentially arranged from left to right, a first sprayer and a first liquid collecting tank are correspondingly arranged on the upper side and the lower side of the first heat exchanger, two ports of the first heat exchanger are correspondingly connected with two ports of the fourth heat exchanger to form a first heat exchange circulation loop, a second sprayer and a second liquid collecting tank are correspondingly arranged on the upper side and the lower side of the second heat exchanger, the second sprayer and the second liquid collecting tank are respectively connected with a high-temperature cold water source to form a spraying circulation loop, two ports of the third heat exchanger are respectively connected with the tail end of a user side to form a cold water circulation loop, and a third sprayer and a third liquid collecting tank are correspondingly arranged on the upper side and the lower side of, and the third sprayer and the third liquid collecting tank are correspondingly connected with the first liquid collecting tank and the first sprayer to form a salt solution regeneration circulation loop, the photovoltaic power generation module is provided with a frame and a photovoltaic panel installed in the frame, a radiator is arranged on the lower side surface of the photovoltaic panel, and two ports of all radiators in the photovoltaic module after being connected in parallel are correspondingly connected with two ports of the fifth heat exchanger to form a second heat exchange circulation loop. Therefore, the photovoltaic heat-based cold and hot water system is simple in structure, stable in performance, safe, reliable and high in energy efficiency ratio. According to the solar photovoltaic panel, the water chilling unit and the photovoltaic module are arranged, cold water can be prepared by the water chilling unit to be supplied to the tail end of a user side for use, solar power generation can be realized by the photovoltaic module, and salt solution of the water chilling unit is driven to be regenerated by heat generated by the photovoltaic power generation module, so that on one hand, the photovoltaic panel can be kept at a lower temperature, the problem of reduction of power generation power of the photovoltaic panel due to temperature rise is solved, and the power generation efficiency is improved; on the other hand, the water chilling unit does not need to be provided with an additional salt solution regeneration heat source, energy waste is avoided, only a small amount of electric energy is consumed by the driving pumps of all the circulation loops in the operation process of the whole system, the high energy efficiency ratio is achieved, the consumed electric energy can be provided by the photovoltaic module, the use of primary energy is completely avoided, and the environmental pollution is avoided. The specific process is as follows: when air flows through the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger in sequence, firstly, high-concentration salt solution sprayed at the first heat exchanger can dehumidify the air, the high-concentration salt solution absorbs moisture in the air and changes the moisture into low-concentration salt solution, and the air changes into dry air; then the high-temperature cold water sprayed at the second heat exchanger can cool the air, the high-temperature cold water is contacted with the dry air to generate evaporation and absorb heat, and the temperature of the air is reduced to become low-temperature air; then the low-temperature air passes through a third heat exchanger and exchanges heat with water in the third heat exchanger, so that the temperature of the water is reduced, and the purpose of preparing cold water is achieved, and the prepared cold water is supplied to the tail end of a user side through a cold water circulation loop for use; and then the air passes through a fourth heat exchanger and is discharged after heat exchange with water in the fourth heat exchanger. The phase change latent heat generated by the heat and moisture exchange between the high-concentration salt solution and the air at the first heat exchanger can be transmitted to the fourth heat exchanger through the first heat exchange circulation loop and is taken away by the air; the low concentration salt solution after the dehumidification can be carried the third spray thrower through salt solution regeneration circulation circuit, spray the in-process and provide the heat that salt solution regeneration needs by the fifth heat exchanger, the air that flows through the fifth heat exchanger on the one hand can absorb the moisture in the low concentration salt solution and make its regeneration be high concentration salt solution, on the other hand the air can absorb the heat of water in the fifth heat exchanger and make its temperature reduce, water after the temperature reduction can carry the radiator through second heat exchange circulation circuit and cool off the heat dissipation to the photovoltaic board, make the photovoltaic board keep lower temperature, circulation operation so.
The hot and cold water system based on photovoltaic heat of the present invention will be described in further detail with reference to the embodiments shown in the drawings.
Drawings
FIG. 1 is a schematic diagram of a photovoltaic heat-based cold and hot water system according to the present invention;
FIG. 2 is a top view of a photovoltaic power module in a photovoltaic heat based hot and cold water system of the present invention;
FIG. 3 is a first perspective view of a photovoltaic power generation module in a photovoltaic heat based hot and cold water system according to the present invention;
FIG. 4 is a bottom view of a photovoltaic power module in a photovoltaic heat based hot and cold water system of the present invention;
FIG. 5 is a second perspective view of a photovoltaic power generation module in a photovoltaic heat based hot and cold water system according to the present invention;
FIG. 6 is an enlarged sectional view taken along line A-A of FIG. 4;
FIG. 7 is an exploded view of a photovoltaic power module in a photovoltaic heat based hot and cold water system of the present invention;
FIG. 8 is a bottom view of a heat sink in a photovoltaic heat based hot and cold water system of the present invention;
FIG. 9 is a perspective view of a radiator in a hot and cold water system based on photovoltaic heat according to the present invention;
FIG. 10 is an enlarged view of a portion of FIG. 9 at position B;
FIG. 11 is a top view of a frame in a photovoltaic heat based hot and cold water system of the present invention;
FIG. 12 is a bottom view of a frame in a photovoltaic heat based hot and cold water system of the present invention;
FIG. 13 is a first perspective view of a frame in a photovoltaic heat based chiller/heater system of the present invention;
FIG. 14 is a second perspective view of a frame in a photovoltaic heat based hot and cold water system of the present invention;
FIG. 15 is an enlarged view of a portion of FIG. 13 at position C;
FIG. 16 is an enlarged view of a portion of FIG. 14 at position D;
FIG. 17 is a perspective view of an internally cooled plastic heat exchanger for a hot and cold water system based on photovoltaic heat in accordance with the present invention;
FIG. 18 is a front view of a heat exchange module in a photovoltaic heat based hot and cold water system of the present invention;
FIG. 19 is a top view of a heat exchange module in a photovoltaic heat based hot and cold water system of the present invention;
FIG. 20 is a perspective view of a heat exchange module in a photovoltaic heat based hot and cold water system according to the present invention;
FIG. 21 is an enlarged view of a portion of FIG. 20 at position E;
fig. 22 is a partial enlarged view of the position F in fig. 20.
Detailed Description
First, it should be noted that, the directional terms such as up, down, left, right, front, rear, etc. described in the present invention are only described with reference to the accompanying drawings for understanding, and are not intended to limit the technical solution and the claimed scope of the present invention.
As shown in fig. 1 to 22, a first embodiment of a photovoltaic heat-based cold and hot water system according to the present invention includes a chiller and a photovoltaic module. The water chilling unit comprises a first heat exchanger 1, a second heat exchanger 2, a third heat exchanger 3, a fourth heat exchanger 4 and a fifth heat exchanger 5; the photovoltaic module is provided with a plurality of photovoltaic power generation modules 6. The first heat exchanger 1, the second heat exchanger 2, the third heat exchanger 3 and the fourth heat exchanger 4 are sequentially arranged from left to right. A first sprayer 11 and a first liquid collecting tank 12 are correspondingly arranged on the upper side and the lower side of the first heat exchanger 1, and two ports of the first heat exchanger 1 are correspondingly connected with two ports of the fourth heat exchanger 4 to form a first heat exchange circulation loop. And a second sprayer 21 and a second liquid collecting tank 22 are correspondingly arranged on the upper side and the lower side of the second heat exchanger 2, and the second sprayer 21 and the second liquid collecting tank 22 are respectively connected with a high-temperature cold water source 23 to form a spraying circulation loop. Both ports of the third heat exchanger 3 are connected to the user-side end 31 to form a cold water circulation circuit. The third sprayer 51 and the third header tank 52 are correspondingly arranged on the upper side and the lower side of the fifth heat exchanger 5, and the third sprayer 51 and the third header tank 52 are correspondingly connected with the first header tank 12 and the first sprayer 11 to form a salt solution regeneration circulation loop. The photovoltaic power generation module 6 is provided with a frame 61 and a photovoltaic plate 62 installed in the frame 61, a radiator 63 is arranged on the lower side surface of the photovoltaic plate 62, and two ports of all radiators 63 in the photovoltaic module after being connected in parallel are correspondingly connected with two ports of the fifth heat exchanger 5 to form a second heat exchange circulation loop.
Through the structure, the photovoltaic heat-based cold and hot water system with simple structure, stable performance, safety, reliability and high energy efficiency ratio is formed. According to the solar photovoltaic power generation system, the water chilling unit and the photovoltaic module are arranged, cold water can be prepared by the water chilling unit to be supplied to the tail end of a user side for use, solar power generation can be realized by the photovoltaic module, and salt solution of the water chilling unit is driven to be regenerated by heat generated by the photovoltaic power generation module 6, so that on one hand, the photovoltaic panel 62 can be kept at a lower temperature, the problem of reduction of power generation power caused by temperature rise of the photovoltaic panel 62 is solved, and the power generation efficiency is improved; on the other hand, the water chilling unit does not need to be provided with an additional salt solution regeneration heat source, energy waste is avoided, only a small amount of electric energy is consumed by the driving pumps in the circulation loops in the operation process of the whole system, the high energy efficiency ratio is achieved, the consumed electric energy can be provided by the photovoltaic module, the use of primary energy is completely avoided, and the environmental pollution is avoided. The specific process is as follows: when air flows through the first heat exchanger 1, the second heat exchanger 2, the third heat exchanger 3 and the fourth heat exchanger 4 in sequence, firstly, high-concentration salt solution sprayed at the first heat exchanger 1 can dehumidify the air, the high-concentration salt solution absorbs moisture in the air and changes the moisture into low-concentration salt solution, and the air changes into dry air; then the air is cooled by the high-temperature cold water sprayed at the second heat exchanger 2, the high-temperature cold water is contacted with the dry air to generate evaporation and absorb heat, and the temperature of the air is reduced to be low-temperature air; the low temperature air then passes through the third heat exchanger 3 and exchanges heat with the water therein, so that the temperature of the water is lowered to achieve the purpose of preparing cold water, and the prepared cold water is supplied to the user side end 31 for use through a cold water circulation loop; the air then passes through the fourth heat exchanger 4 and is discharged after heat exchange with the water therein. The phase change latent heat generated by the heat and moisture exchange between the high-concentration salt solution and the air at the first heat exchanger 1 is transmitted to the fourth heat exchanger 4 through the first heat exchange circulation loop and is taken away by the air; the dehumidified low-concentration salt solution is conveyed to the third sprayer 51 through the salt solution regeneration circulation loop, heat required by salt solution regeneration is provided by the fifth heat exchanger 5 in the spraying process, on one hand, air flowing through the fifth heat exchanger 5 can absorb moisture in the low-concentration salt solution to enable the low-concentration salt solution to be regenerated into the high-concentration salt solution, on the other hand, air can absorb heat of water in the fifth heat exchanger 5 to enable the temperature of the water to be reduced, the water with the reduced temperature is conveyed to the radiator 63 through the second heat exchange circulation loop to cool and dissipate heat of the photovoltaic panel 62, the photovoltaic panel 62 is enabled to keep at a lower temperature, and the circulation operation is carried out in this way. In practical application, the first heat exchange circulation loop, the spraying circulation loop, the cold water circulation loop, the salt solution regeneration circulation loop and the second heat exchange circulation loop are all provided with a driving pump to provide a circulating driving force; in the water chilling unit, a first air channel is arranged on a passage through which air flows through a first heat exchanger 1, a second heat exchanger 2, a third heat exchanger 3 and a fourth heat exchanger 4 in sequence, and a second air channel is arranged on a passage through which air flows through a fifth heat exchanger 5, so that the air exchanges heat with each heat exchanger; the high-temperature cold water refers to tap water, river water, lake water, seawater and the like.
As an optimized scheme, the ground source heat pump unit 7 and the underground heat exchanger 8 are further provided, and two ports on the primary side of the ground source heat pump unit 7, two ports of the underground heat exchanger 8 and two ports of all the radiators 63 in the photovoltaic module after being connected in parallel are sequentially connected to form a third heat exchange circulation loop, so that two ports on the secondary side of the ground source heat pump unit 7 are respectively connected with the user side end 31 to form a hot water circulation loop. The structure enhances the functionality and the practicability of the cold and hot water system, the cold water unit is started and the ground source heat pump unit is closed under the refrigeration working condition in summer, and the salt solution of the cold water unit is driven to regenerate by using the heat generated by the photovoltaic power generation module 6 in the system operation process, so that the photovoltaic panel 62 keeps a lower temperature, the problem of the reduction of the power generation power of the photovoltaic panel 62 due to the temperature rise is solved, and the power generation efficiency is improved; on the other hand, the water chilling unit does not need to be provided with an additional salt solution regeneration heat source, so that energy waste is avoided; when the heat generated by the photovoltaic power generation module 6 is excessive, the third heat exchange circulation loop is operated, and the heat generated by the photovoltaic power generation module 6 is stored in the underground heat exchanger 8 to regenerate the soil, so that the problem that the working efficiency of the ground source heat pump system is reduced along with the increase of the service life can be effectively avoided or alleviated. Under the working condition of heating in winter, the water chilling unit is closed, the ground source heat pump unit is started, on one hand, heat generated by the photovoltaic power generation module 6 is transmitted to the underground heat exchanger 8 through the third heat exchange circulation loop, so that the photovoltaic panel 62 keeps a lower temperature, the power generation efficiency is improved, on the other hand, heat in the underground heat exchanger 8 is transmitted to the hot water circulation loop through the third heat exchange circulation loop and the ground source heat pump unit 7, and is supplied to the end 31 of the user side through the hot water circulation loop; the heat generated by the photovoltaic power generation module 6 is transmitted to the underground heat exchanger 8 through the third heat exchange circulation loop, so that the heat taken out of the soil by the ground source heat pump machine system is reduced, and the annual working coefficient of the ground source heat pump machine system is improved. It should be noted that the ground source heat pump system refers to a system composed of the ground source heat pump unit 7, the underground heat exchanger 8, the third heat exchange circulation loop and the hot water circulation loop. In practical application, the ground source heat pump unit 7 is composed of a compressor, an evaporator, a throttle valve and a condenser, wherein a secondary side of the evaporator is used as a primary side of the ground source heat pump unit 7, a secondary side of the condenser is used as a secondary side of the ground source heat pump unit 7, and the compressor, the primary side of the evaporator, the throttle valve and the primary side of the condenser are connected to form a heat pump circulation loop. In the invention, two branches of the third heat exchange circulation loop are correspondingly connected with two branches of the second heat exchange circulation loop through three-way control valves respectively, and two branches of the hot water circulation loop are correspondingly connected with two branches of the cold water circulation loop through three-way control valves respectively, so that the pipelines are simplified and the control is convenient. In order to enhance the stability and adaptability of the system, the present embodiment provides a solution storage tank 13 in the saline solution regeneration circulation circuit, a hot water storage tank 53 in the second heat exchange circulation circuit, and a plate heat exchanger 54 between the two branches of the second heat exchange circulation circuit.
As an optimized solution, the present embodiment adopts the following structure and connection manner for the heat sink 63: comprises a capillary network 631 bonded on the lower side surface of the photovoltaic panel 62 by adhesive glue 64, communicating pipes 632 are respectively arranged at the left end and the right end of the capillary network 631, and pipe joints 633 are arranged on the communicating pipes 632. The radiator 63 with the structure has the advantages of simple structure, low cost, small occupied space and high heat exchange efficiency, and can improve the structural compactness and the heat dissipation effect of the photovoltaic power generation module 6. Meanwhile, the present embodiment adopts the following structure for the frame 61: the frame 611 is provided, upper edges 612 extending inward are respectively provided on the upper sides of the four sides of the frame 611, lower edges 613 extending inward are respectively provided on the lower sides of the front and rear sides of the frame 611, and limit catches 614 are respectively provided on the inner sides of the left and right sides of the frame 611. When the photovoltaic power generation module 6 is assembled, the photovoltaic panel 62 is clamped between the limiting clamping tables 614 of the frame 61, so that the periphery of the upper side of the photovoltaic panel 62 is respectively attached to the corresponding upper edges 612, and the communicating pipes 632 at the two ends of the capillary network 631 are positioned at the lower sides of the corresponding limiting clamping tables 614. And a plurality of pressing rods 65 are arranged at intervals along the left-right direction, so that the leftmost pressing rod 65 and the rightmost pressing rod 65 are respectively pressed on the corresponding communicating pipe 632, the two ends of the leftmost pressing rod 65 are respectively connected with the corresponding lower edge 613 through the connecting plate 651, the middle pressing rod 65 is pressed on the capillary network 631, and the two ends of the middle pressing rod 65 are respectively connected with the corresponding lower edge 613 through the connecting plate 651. The frame 61 and the photovoltaic power generation module 6 which are arranged have the characteristics of simple structure and convenience in disassembly and assembly, and the stability of the structure is enhanced through the pressing rod 65 on the basis that the capillary network 631 and the photovoltaic panel 62 are fully attached. It should be noted that in practical applications, the lower edge 613 of the frame 61 is provided with a threaded post 615 which is engaged with the connecting plate 651 so as to mount the fixing strut 65; the leftmost and rightmost struts 65 are each provided with a slit so that the pipe joint 633 protrudes from the slit. In addition, the heat insulating layers 66 made of mineral fibers are respectively filled at the positions below the heat radiator 63 and between the adjacent pressure rods 65, so that the heat dissipation effect of the capillary network 631 can be kept relatively stable through the heat insulating layers 66, the influence of the external environment temperature can be avoided, and particularly, the heat dissipation function can be prevented from being influenced by freezing of circulating water in the capillary network 631 under the condition of low temperature in winter. And a cover layer 67 for ultraviolet ray protection is provided on the lower side of the heat insulating layer 66 to prevent the heat insulating layer 66 from being affected in life by ultraviolet ray irradiation and weathering.
As a specific implementation mode, the first heat exchanger 1, the third heat exchanger 3, the fourth heat exchanger 4 and the fifth heat exchanger 5 adopt inner-cooling plastic heat exchangers, so that the material cost is reduced, the heat exchange efficiency is improved, the corrosion resistance is enhanced, and the service life is prolonged; and the second heat exchanger 2 adopts a filler type plastic heat exchanger, and the spray evaporation effect is enhanced through a heat insulation heat exchange mode. Specifically, the internal cooling type plastic heat exchanger is composed of a plurality of heat exchange modules 9 which are communicated with each other, wherein each heat exchange module 9 comprises a plurality of heat exchange tubes 91, one ends of the heat exchange tubes 91 are communicated with each other through a main tube 92, the other ends of the heat exchange tubes 91 are communicated with each other through another main tube 92, the main tube 92 adopts a square tube structure, two first connectors 93 are respectively arranged on the front and rear side walls of the main tube 92, and second connectors 94 are respectively arranged at the upper and lower ends of the main tube 92. When a plurality of heat exchange modules 9 are combined into an inner-cooling type plastic heat exchanger, the heat exchange modules 9 are in hot melting sealing connection through a first interface 93 or a second interface 94. For the internal cooling plastic heat exchanger, except that two first interfaces 93 or second interfaces 94 are reserved as an input port and an output port, the other first interfaces 93 and second interfaces 94 should be sealed by hot melting using a first plugging disc 95 and a second plugging disc 96 made of plastic materials. The inner-cooling type plastic heat exchanger with the structure has the advantages of simple structure, convenience in assembly and good expansibility, different numbers of heat exchange modules can be selected to be combined for use according to the heat exchange quantity, and when a heat exchange tube is broken or leaked, the heat exchange tube can be continuously used only by plugging the heat exchange tube through hot melting, so that the problem of waste caused by the whole replacement of the heat exchanger is avoided. It should be noted that the internal cooling type plastic heat exchanger shown in fig. 17 is formed by combining eight heat exchange modules 9, and is not limited to this in practical application. Further, the present embodiment divides the plurality of heat exchange tubes 91 in the heat exchange module 9 into a plurality of layers distributed at intervals in the front-rear direction, each layer includes a plurality of heat exchange tubes 91 uniformly distributed in the up-down direction, and the heat exchange tubes 91 in adjacent layers are distributed in a staggered manner in the up-down direction. The structure can effectively enhance the convection heat exchange and improve the heat exchange efficiency.
The above examples are only for describing the preferred embodiments of the present invention, and do not limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the invention defined by the claims without departing from the design concept of the present invention.
Claims (10)
1. A cold and hot water system based on photovoltaic heat comprises a water chilling unit and a photovoltaic module, wherein the water chilling unit comprises a first heat exchanger (1), a second heat exchanger (2), a third heat exchanger (3), a fourth heat exchanger (4) and a fifth heat exchanger (5), the photovoltaic module comprises a plurality of photovoltaic power generation modules (6), and the cold and hot water system is characterized in that the first heat exchanger (1), the second heat exchanger (2), the third heat exchanger (3) and the fourth heat exchanger (4) are sequentially arranged from left to right, a first sprayer (11) and a first liquid collecting tank (12) are correspondingly arranged on the upper side and the lower side of the first heat exchanger (1), two ports of the first heat exchanger (1) are correspondingly connected with two ports of the fourth heat exchanger (4) to form a first heat exchange circulation loop, a second sprayer (21) and a second liquid collecting tank (22) are correspondingly arranged on the upper side and the lower side of the second heat exchanger (2), the second sprayer (21) and the second liquid collecting tank (22) are respectively connected with a high-temperature cold water source (23) to form a spraying circulation loop, two ports of the third heat exchanger (3) are respectively connected with the tail end (31) of the user side to form a cold water circulation loop, the upper side and the lower side of the fifth heat exchanger (5) are correspondingly provided with a third sprayer (51) and a third liquid collecting tank (52), and the third sprayer (51) and the third liquid collecting tank (52) are correspondingly connected with the first liquid collecting tank (12) and the first sprayer (11) to form a salt solution regeneration circulation loop; photovoltaic power generation module (6) include frame (61) and install photovoltaic board (62) in frame (61), and the downside of photovoltaic board (62) is equipped with radiator (63), and the both ends mouth correspondence after all radiators (63) connect with the both ends mouth of fifth heat exchanger (5) in the photovoltaic module forms second heat exchange circulation circuit.
2. The photovoltaic heat-based cold and hot water system as claimed in claim 1, further comprising a ground source heat pump unit (7) and an underground heat exchanger (8), wherein two ports on the primary side of the ground source heat pump unit (7), two ports of the underground heat exchanger (8) and two ports of all radiators (63) in the photovoltaic module after being connected in parallel are sequentially connected to form a third heat exchange circulation loop, and two ports on the secondary side of the ground source heat pump unit (7) are respectively connected with the end (31) on the user side to form a hot water circulation loop.
3. The photovoltaic heat-based cold and hot water system as claimed in claim 2, wherein two branches of the third heat-exchange circulation loop are correspondingly connected with two branches of the second heat-exchange circulation loop through three-way control valves, respectively, and two branches of the hot water circulation loop are correspondingly connected with two branches of the cold water circulation loop through three-way control valves, respectively; be equipped with solution holding vessel (13) among the salt solution regeneration circulation circuit, be equipped with heat storage water tank (53) among the second heat exchange circulation circuit, be equipped with plate heat exchanger (54) between two branches of second heat exchange circulation circuit.
4. A photovoltaic heat-based cold and hot water system according to claim 3, wherein the heat sink (63) comprises a capillary tube network (631) bonded to the lower side of the photovoltaic panel (62) by an adhesive (64), the left and right ends of the capillary tube network (631) are respectively provided with a communication tube (632), and the communication tube (632) is provided with a tube joint (633).
5. A photovoltaic heat-based cold and hot water system as claimed in claim 4, wherein the frame (61) comprises a frame (611), upper edges (612) extending inwards are respectively arranged at the upper sides of the four sides of the frame (611), lower edges (613) extending inwards are respectively arranged at the lower sides of the front and rear sides of the frame (611), and limit clamping platforms (614) are respectively arranged at the inner sides of the left and right sides of the frame (611); the photovoltaic panel (62) is clamped between the limiting clamping tables (614) of the frame (61), and the periphery of the upper side of the photovoltaic panel (62) is respectively attached to the corresponding upper edges (612); the communicating pipes (632) at the two ends of the capillary pipe network (631) are positioned at the lower sides of the corresponding limiting clamping tables (614); the photovoltaic power generation module (6) further comprises a plurality of pressure rods (65) distributed at intervals along the left-right direction, the pressure rods (65) at the leftmost side and the rightmost side respectively press against the corresponding communicating pipes (632) and enable the two ends of the pressure rods to be connected with the corresponding lower edges (613) through connecting plates (651), and the pressure rod (65) in the middle presses against the capillary tube net (631) and enables the two ends of the pressure rod to be connected with the corresponding lower edges (613) through the connecting plates (651).
6. A photovoltaic heat based cold-hot water system according to claim 5, characterized in that the underside of the radiator (63) is filled with insulation layers (66) made of mineral fibers between adjacent pressure bars (65), respectively; a cover layer (67) for preventing ultraviolet rays is arranged on the lower side of the heat insulation layer (66).
7. A photovoltaic heat based cold and hot water system according to claim 3, characterized in that the first heat exchanger (1), the third heat exchanger (3), the fourth heat exchanger (4) and the fifth heat exchanger (5) are internally cooled plastic heat exchangers and the second heat exchanger (2) is a packed plastic heat exchanger.
8. The photovoltaic heat-based cold and hot water system according to claim 7, wherein the internally-cooled plastic heat exchanger is formed by combining a plurality of heat exchange modules (9) which are communicated with each other, each heat exchange module (9) comprises a plurality of heat exchange tubes (91), one ends of the plurality of heat exchange tubes (91) are communicated with each other through a main tube (92), the other ends of the plurality of heat exchange tubes (91) are communicated with each other through another main tube (92), the main tube (92) is of a square tube structure, the front and rear side walls of the main tube (92) are respectively provided with two first connectors (93), and the upper and lower ends of the main tube (92) are respectively provided with a second connector (94); the heat exchange modules (9) in the inner-cooling plastic heat exchanger are in hot-melt sealing connection through a first interface (93) or a second interface (94).
9. A photovoltaic heat based cold and hot water system according to claim 8, wherein the plurality of heat exchange tubes (91) in the heat exchange module (9) are divided into a plurality of layers spaced apart in the front-rear direction, each layer comprises a plurality of heat exchange tubes (91) uniformly distributed in the up-down direction, and the heat exchange tubes (91) of adjacent layers are distributed in a staggered manner in the up-down direction.
10. The photovoltaic heat-based cold and hot water system according to claim 3, wherein the ground source heat pump unit (7) comprises a compressor, an evaporator, a throttle valve and a condenser, the secondary side of the evaporator is used as the primary side of the ground source heat pump unit (7), the secondary side of the condenser is used as the secondary side of the ground source heat pump unit (7), and the compressor, the primary side of the evaporator, the throttle valve and the primary side of the condenser form a heat pump circulation loop according to connection.
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| CN202010135056.3A CN111380390A (en) | 2020-03-02 | 2020-03-02 | Hot and cold water system based on photovoltaic heat |
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| CN114279007A (en) * | 2021-11-01 | 2022-04-05 | 际高科技有限公司 | Anti-frosting air source heat pump system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114279007A (en) * | 2021-11-01 | 2022-04-05 | 际高科技有限公司 | Anti-frosting air source heat pump system |
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