CN220793268U - Solar photovoltaic photo-thermal and heat pump coupling hot water system for building - Google Patents

Solar photovoltaic photo-thermal and heat pump coupling hot water system for building Download PDF

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Publication number
CN220793268U
CN220793268U CN202322208220.0U CN202322208220U CN220793268U CN 220793268 U CN220793268 U CN 220793268U CN 202322208220 U CN202322208220 U CN 202322208220U CN 220793268 U CN220793268 U CN 220793268U
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water
heat pump
thermal
pipeline
solar photovoltaic
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肖清云
谢志盛
林仲喜
曾志贤
陈雪勇
黄端权
傅俊旭
陈志彬
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Fujian Wujian Construction Group Co ltd
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Fujian Wujian Construction Group Co ltd
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Abstract

The utility model relates to a solar photovoltaic photo-thermal and heat pump coupling hot water system for a building, which belongs to the technical field of solar energy application and comprises a solar photovoltaic photo-thermal unit, a water-cooling heat pump unit and an air-cooling heat pump unit, wherein the water-cooling heat pump unit is connected with the solar photovoltaic photo-thermal unit, the air-cooling heat pump unit is connected with the water-cooling heat pump unit, the solar photovoltaic photo-thermal unit is externally connected with tap water and is used for outputting tap water with the temperature being higher than A, the water-cooling heat pump unit is used for heating tap water with the temperature being lower than A and higher than B and outputting tap water with the temperature being higher than A, and the air-cooling heat pump unit is used for heating tap water with the temperature being lower than B and outputting tap water with the temperature being higher than A. The utility model can stably provide hot water for users under different weather conditions, and has strong applicability and good stability.

Description

Solar photovoltaic photo-thermal and heat pump coupling hot water system for building
Technical Field
The utility model relates to a solar photovoltaic photo-thermal and heat pump coupling hot water system for a building, and belongs to the technical field of solar energy application.
Background
At present, solar water heating systems are widely used in civil buildings. Solar water heating systems heat water by capturing solar radiation with a solar collector and converting it into heat energy, the solar water heating system generally consisting of the following main components: solar collector, hot water storage tank, control system, piping and pump. When the solar collector is exposed to sunlight, the absorbing coating absorbs solar radiation and converts it into heat energy, which is then transferred to a storage tank via a piping system. When hot water is required, the hot water may be used directly from the tank.
Solar energy is a renewable energy source, the application process is energy-saving and environment-friendly, but the operation process is greatly influenced by weather conditions, and the supply stability of hot water is greatly influenced, so improvement is urgently needed.
Disclosure of Invention
In order to overcome the defects that the existing solar water heating system is greatly influenced by weather, poor in hot water supply stability and the like, the utility model designs the solar photovoltaic photo-thermal and heat pump coupled water heating system for the building, which can stably provide hot water required by life for users under weather conditions in different states, and has strong applicability and good stability.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a solar photovoltaic photo-thermal and heat pump coupling hot water system for building, includes solar photovoltaic photo-thermal unit, water-cooling heat pump unit and forced air cooling heat pump unit, water-cooling heat pump unit is connected with solar photovoltaic photo-thermal unit, forced air cooling heat pump unit is connected with water-cooling heat pump unit, solar photovoltaic photo-thermal unit external running water and be used for exporting the running water that is higher than temperature A, water-cooling heat pump unit is used for being less than temperature A and be higher than temperature B running water heating and export the running water that is higher than temperature A, forced air cooling heat pump unit is used for being less than temperature B running water heating and export the running water that is higher than temperature A.
Further, the solar photovoltaic photo-thermal unit comprises a water inlet main pipeline, a circulating water pump, a photovoltaic photo-thermal assembly and a water outlet main pipeline which are sequentially connected.
Further, the water-cooling heat pump unit comprises a heat storage water tank, a heat pump compressor, a condensing water tank and a sleeve heat exchanger, wherein the input end of the heat storage water tank is connected with a water outlet main pipeline, the output end of the heat storage water tank is connected with the water inlet end of the sleeve heat exchanger through a first connecting pipeline, and the water outlet end of the sleeve heat exchanger is connected with the water inlet main pipeline through a second connecting pipeline; the medium outlet end of the double-pipe heat exchanger is connected with a heat pump compressor through a heat pump pipeline, the heat pump compressor is connected with the heat exchange inlet end of the condensing water tank through a water tank pipeline, and the heat exchange outlet end of the condensing water tank is connected with the medium inlet end of the double-pipe heat exchanger through a throttling pipeline; the water inlet end of the condensing water tank is connected with the water inlet main pipeline through a water inlet branch pipeline, and the water outlet end of the condensing water tank is connected with the water outlet main pipeline through a water outlet branch pipeline.
Further, the air-cooled heat pump unit comprises an air-cooled fin evaporator and a throttling mechanism, wherein a medium output end of the air-cooled fin evaporator is connected with a heat pump pipeline, a medium input end of the air-cooled fin evaporator is connected with a throttling pipeline, and the throttling mechanism is arranged between a connecting point of the medium input end of the air-cooled fin evaporator and the throttling pipeline and a condensate water tank.
Further, the photovoltaic photo-thermal assembly is further connected with a power transmission line, the power transmission line comprises a storage battery pack and an inverter which are electrically connected in sequence, and the output end of the inverter is electrically connected with electric equipment or a power grid.
Compared with the prior art, the utility model has the following characteristics and beneficial effects:
according to the utility model, through the coupling of the solar photovoltaic photo-thermal unit, the water-cooling heat pump unit and the wind-cooling heat pump unit, hot water can be supplied to a user under the conditions of sufficient sunlight, insufficient sunlight and no sunlight, so that the stability of hot water supply is effectively improved, the solar photovoltaic photo-thermal unit can also output electric energy, self-power supply of the system is realized, energy sources are saved, tap water flows through the photovoltaic photo-thermal assembly, the surface temperature of the photovoltaic photo-thermal assembly can be effectively reduced, the photoelectric conversion efficiency is improved, the service life of the photovoltaic assembly is prolonged, the electric energy in the system can be fully utilized, and the system has wide prospects under a double-carbon background.
Drawings
Fig. 1 is a schematic diagram of the connection of the present utility model.
Wherein the reference numerals are as follows: 1. a main water inlet pipeline; 2. a circulating water pump; 3. a photovoltaic photo-thermal assembly; 4. a power transmission line; 401. a battery pack; 402. an inverter; 5. a main water outlet pipeline; 6. a water outlet branch pipeline; 7. a water inlet branch pipeline; 8. a water tank line; 9. a heat pump compressor; 10. a thermal storage tank; 11. a first connecting line; 12. a second connecting pipeline; 13. a throttle pipeline; 14. a heat pump line; 15. a double-pipe heat exchanger; 16. an air-cooled fin evaporator; 17. a condensate tank; 18. a throttle mechanism.
Detailed Description
The present utility model will be described in more detail with reference to examples.
As shown in fig. 1, the solar photovoltaic photo-thermal and heat pump coupling water heating system for building in this embodiment includes a solar photovoltaic photo-thermal unit, a water-cooling heat pump unit and an air-cooling heat pump unit, the water-cooling heat pump unit is connected with the solar photovoltaic photo-thermal unit, the air-cooling heat pump unit is connected with the water-cooling heat pump unit, the solar photovoltaic photo-thermal unit is externally connected with tap water and is used for outputting tap water higher than temperature a, the water-cooling heat pump unit is used for heating tap water lower than temperature a and higher than temperature B and outputting tap water higher than temperature a, and the air-cooling heat pump unit is used for heating tap water lower than temperature B and outputting tap water higher than temperature a.
It should be noted that, the monitoring of temperature and the start and stop of the solar photovoltaic photo-thermal unit, the water-cooling heat pump unit and the air-cooling heat pump unit are all completed by a plc control system, and the plc control system selectively enables the solar photovoltaic photo-thermal unit, the water-cooling heat pump unit or the air-cooling heat pump unit according to the monitored temperature data so as to ensure that a user can obtain stable hot water.
Further, the solar photovoltaic photo-thermal unit comprises a water inlet main pipeline 1, a circulating water pump 2, a photovoltaic photo-thermal assembly 3 and a water outlet main pipeline 5 which are sequentially connected.
Further, the water-cooling heat pump unit comprises a heat storage water tank 10, a heat pump compressor 9, a condensation water tank 17 and a sleeve heat exchanger 15, wherein the input end of the heat storage water tank 10 is connected with the water outlet main pipeline 5, the output end of the heat storage water tank is connected with the water inlet end of the sleeve heat exchanger 15 through a first connecting pipeline 11, and the water outlet end of the sleeve heat exchanger 15 is connected with the water inlet main pipeline 1 through a second connecting pipeline 12; the medium outlet end of the double-pipe heat exchanger 15 is connected with the heat pump compressor 9 through a heat pump pipeline 14, the heat pump compressor 9 is connected with the heat exchange inlet end of the condensate water tank 17 through a water tank pipeline 8, and the heat exchange outlet end of the condensate water tank 17 is connected with the medium inlet end of the double-pipe heat exchanger 15 through a throttle pipeline 13; the water inlet end of the condensate water tank 17 is connected with the water inlet main pipeline 1 through the water inlet branch pipeline 7, and the water outlet end of the condensate water tank 17 is connected with the water outlet main pipeline 5 through the water outlet branch pipeline 6.
Further, the air-cooled heat pump unit comprises an air-cooled fin evaporator 16 and a throttling mechanism 18, wherein a medium output end of the air-cooled fin evaporator 16 is connected with the heat pump pipeline 14, a medium input end of the air-cooled fin evaporator 16 is connected with the throttling pipeline 13, and the throttling mechanism 18 is arranged between a connecting point of the medium input end of the air-cooled fin evaporator 16 and the throttling pipeline 13 and the condensate water tank 17.
Further, the photovoltaic photo-thermal assembly 3 is further connected with a power transmission line 4, the power transmission line 4 comprises a storage battery 401 and an inverter 402 which are electrically connected in sequence, and the output end of the inverter 402 is electrically connected with the circulating water pump 2, the heat pump compressor 9 and the power grid.
Specifically, in this embodiment, the water inlet main pipeline 1 is provided with a first valve, the water inlet branch pipeline 7 is arranged at the input end of the first valve, and the water inlet branch pipeline 7 is provided with a second valve; a valve III is arranged between the heat storage water tank 10 and the water outlet main pipeline 5; the throttle pipeline 13 is provided with a valve IV, a connecting pipeline between the air-cooled fin evaporator 16 and the throttle pipeline 13 is provided with a valve V, and a connecting point between the air-cooled fin evaporator 16 and the throttle pipeline 13 is arranged at the input end of the valve IV.
The working principle of the utility model is as follows:
1. when the illumination is sufficient, the water temperature is higher than the temperature A, a solar photovoltaic photo-thermal unit is started, water can directly pass through the photovoltaic photo-thermal assembly 3, the temperature of the water is reduced, and the water temperature is increased at the same time, so that the temperature of hot water required by a user is directly supplied to the user; meanwhile, the surface temperature of the water flowing through the photovoltaic photo-thermal assembly 3 can be reduced, the photoelectric conversion efficiency is improved, the service life of the photovoltaic assembly is prolonged, and the output electric energy provides power for the circulating water pump 2 and the heat pump compressor 9 and can be also transmitted to a power grid;
2. when the illumination is weaker, the water temperature is larger than B but smaller than A, and a solar photovoltaic photo-thermal heating water-cooling heat pump unit is adopted to supply hot water; the temperature of the water is increased through the photovoltaic photo-thermal module 3, but the temperature of the hot water required by a user is not reached, and the water is stored in the heat storage water tank 10;
the water in the heat storage water tank 10 flows into the double-pipe heat exchanger 15 to exchange heat with the working medium in the double-pipe heat exchanger 15, the working medium in the double-pipe heat exchanger 15 absorbs heat and vaporizes and is sucked into the heat pump compressor 9, the heat pump compressor 9 compresses low-pressure working medium gas into high-temperature high-pressure gas and sends the high-temperature high-pressure gas into the condensation water tank 17, tap water which is connected into the condensation water tank 17 is cold water and exchanges heat with the high-temperature high-pressure gas in the condensation water tank 17, the temperature rises, and the tap water is supplied to a user for use;
meanwhile, due to the action of water pressure, the heat storage water tank 10 automatically supplements water, and continuously exchanges heat with the double-pipe heat exchanger 15 under the drive of the circulating water pump 2, so as to provide heat for the double-pipe heat exchanger 15;
3. when no illumination exists (at night), the temperature is lower than B, and an air-cooled heat pump unit is adopted to supply hot water; outdoor air exchanges heat with the air-cooled fin evaporator 16, the working medium in the air-cooled fin evaporator 16 absorbs heat and is vaporized, and is sucked into the heat pump compressor 9, the heat pump compressor 9 compresses low-pressure working medium gas into high-temperature high-pressure gas, the high-temperature high-pressure gas is sent into the condensation water tank 17, tap water exchanges heat with the high-temperature high-pressure gas in the condensation water tank 17, the tap water temperature is increased, the tap water is supplied to a user for use, meanwhile, the working medium is cooled into high-pressure liquid, the high-pressure liquid is changed into low-pressure liquid through the throttling mechanism 18, and the low-pressure liquid flows into the air-cooled fin evaporator 16, so that domestic hot water is provided for the user through circulation.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "inner", "outer", "upper", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "connected" should be interpreted broadly, and for example, it may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims (5)

1. A solar photovoltaic photo-thermal and heat pump coupling hot water system for building is characterized in that: the solar photovoltaic solar heat pump system comprises a solar photovoltaic photo-thermal unit, a water-cooling heat pump unit and an air-cooling heat pump unit, wherein the water-cooling heat pump unit is connected with the solar photovoltaic photo-thermal unit, the air-cooling heat pump unit is connected with the water-cooling heat pump unit, the solar photovoltaic photo-thermal unit is externally connected with tap water and is used for outputting tap water higher than temperature A, the water-cooling heat pump unit is used for heating tap water lower than temperature A and higher than temperature B and outputting tap water higher than temperature A, and the air-cooling heat pump unit is used for heating tap water lower than temperature B and outputting tap water higher than temperature A.
2. The solar photovoltaic photo-thermal and heat pump coupled hot water system for building according to claim 1, wherein: the solar photovoltaic photo-thermal unit comprises a water inlet main pipeline (1), a circulating water pump (2), a photovoltaic photo-thermal assembly (3) and a water outlet main pipeline (5) which are sequentially connected.
3. The solar photovoltaic photo-thermal and heat pump coupled hot water system for building according to claim 2, wherein: the water-cooling heat pump unit comprises a heat storage water tank (10), a heat pump compressor (9), a condensing water tank (17) and a sleeve heat exchanger (15), wherein the input end of the heat storage water tank (10) is connected with a water outlet main pipeline (5), the output end of the heat storage water tank is connected with the water inlet end of the sleeve heat exchanger (15) through a first connecting pipeline (11), and the water outlet end of the sleeve heat exchanger (15) is connected with the water inlet main pipeline (1) through a second connecting pipeline (12); the medium outlet end of the double-pipe heat exchanger (15) is connected with the heat pump compressor (9) through a heat pump pipeline (14), the heat pump compressor (9) is connected with the heat exchange inlet end of the condensing water tank (17) through a water tank pipeline (8), and the heat exchange outlet end of the condensing water tank (17) is connected with the medium inlet end of the double-pipe heat exchanger (15) through a throttle pipeline (13); the water inlet end of the condensate water tank (17) is connected with the water inlet main pipeline (1) through a water inlet branch pipeline (7), and the water outlet end of the condensate water tank (17) is connected with the water outlet main pipeline (5) through a water outlet branch pipeline (6).
4. A solar photovoltaic photo-thermal and heat pump coupled water heating system for construction according to claim 3, wherein: the air-cooled heat pump unit comprises an air-cooled fin evaporator (16) and a throttling mechanism (18), wherein a medium output end of the air-cooled fin evaporator (16) is connected with a heat pump pipeline (14), a medium input end of the air-cooled fin evaporator (16) is connected with a throttling pipeline (13), and the throttling mechanism (18) is arranged between a connecting point of the medium input end of the air-cooled fin evaporator (16) and the throttling pipeline (13) and a condensate water tank (17).
5. The solar photovoltaic photo-thermal and heat pump coupled hot water system for building according to claim 2, wherein: the photovoltaic photo-thermal assembly (3) is further connected with a power transmission line (4), the power transmission line (4) comprises a storage battery pack (401) and an inverter (402) which are electrically connected in sequence, and the output end of the inverter (402) is electrically connected with electric equipment or a power grid.
CN202322208220.0U 2023-08-16 2023-08-16 Solar photovoltaic photo-thermal and heat pump coupling hot water system for building Active CN220793268U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322208220.0U CN220793268U (en) 2023-08-16 2023-08-16 Solar photovoltaic photo-thermal and heat pump coupling hot water system for building

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Application Number Priority Date Filing Date Title
CN202322208220.0U CN220793268U (en) 2023-08-16 2023-08-16 Solar photovoltaic photo-thermal and heat pump coupling hot water system for building

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CN220793268U true CN220793268U (en) 2024-04-16

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