Pv / t phase change energy storage water source heat pump heating system

Abstract

The utility model relates to a kind of PV / T phase change energy storage water source heat pump heating system, including heat collection circulation loop, heat transfer circulation loop, heating circulation loop;Heat collection circulation loop includes cyclically communicated PV / T photovoltaic photo-thermal plate and phase change water tank;Heat transfer circulation loop includes cyclically communicated phase change water tank and double-source heat pump;Heating circulation loop includes cyclically communicated double-source heat pump and fan-coil unit.Wherein, phase change water tank includes shell, and the first spiral pipe heat exchanger and second spiral pipe heat exchanger of shell inside being set;First spiral pipe heat exchanger is connected with PV / T photovoltaic photo-thermal plate closed loop, and second spiral pipe heat exchanger is connected with double-source heat pump closed loop.Compared with prior art, the PV / T photovoltaic photo-thermal plate of the utility model system is collected solar heat while generating electricity, and the electric energy generated can drive heat pump to operate, and heat energy is used for auxiliary heating or storage;Heat pump utilizes double-source to improve heating energy efficiency, and phase change energy storage reduces energy loss.

Description

Technical Field

[0001] This utility model relates to the fields of photovoltaic power generation, photothermal effect and heat pump technology, specifically to a PV / T phase change energy storage water source heat pump heating system. Background Technology

[0002] Buildings require significant energy for heating, air conditioning, lighting, and electricity use, with cooling and heating consuming the largest amounts. As global emphasis on environmental protection and sustainable development grows, the application of renewable energy in the building sector will become increasingly widespread. Global environmental issues have made reducing buildings' energy demands a crucial topic. By adopting energy-saving technologies, promoting sustainable building materials, and developing renewable energy, we can reduce building energy consumption and environmental impact, thus promoting sustainable energy development.

[0003] Patent CN220135567U provides a PV / T dual-source heat pump heating system. This system includes a PV / T collector, a dual-source heat pump unit, and a load-side water tank. The PV / T collector is connected to a hot water storage tank via a collector circulation pump. The system is characterized by: the PV / T collector being connected to a photovoltaic inverter / controller unit, which is connected to the power grid and to the compressor in the dual-source heat pump unit; and the hot water storage tank being connected to a water source evaporator in the dual-source heat pump unit via a water source circulation pump. In the heat pump unit, the condenser is connected to the load-side water tank via a load-side circulating pump. The load-side water tank is connected to the underfloor heating coils via a floor heating-side circulating pump. The load-side water tank is also connected to an air-to-water heat exchanger via a fresh air-side circulating pump. The air inlet of the air-to-water heat exchanger is connected to a heat recovery device, and the air outlet is connected to an air vent. The fresh air inlet of the heat recovery device is connected to a fresh air fan, and the fresh air outlet is connected to the air-to-water heat exchanger. The exhaust inlet of the heat recovery device is connected to an exhaust fan, and the exhaust fan is connected to an exhaust vent. However, the above patent has the following drawback: it cannot store the solar heat absorbed by the PV / T collector during the day to solve the problem of insufficient heat at night. Utility Model Content

[0004] The purpose of this invention is to overcome at least one of the defects in the existing technology mentioned above and provide a PV / T phase change energy storage water source heat pump heating system. This system achieves efficient energy collection, storage, and utilization through the organic combination of photovoltaic / thermal (PV / T) modules, phase change energy storage technology, and a dual-source heat pump. Existing air source heat pump water heating systems suffer from performance degradation due to a drop in ambient temperature. The photovoltaic / thermal (PV / T) module backplate heat exchanger of this invention absorbs solar heat and stores it in 20#-35# phase change materials, supplementing the insufficient heat from the water source at night, which prevents the water source heat pump unit from operating in heating mode. This significantly increases the operating time and heating performance of the water source heat pump unit, achieving energy saving.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A PV / T phase change energy storage water source heat pump heating system includes a heat collection circulation loop, a heat transfer circulation loop, and a heating circulation loop;

[0007] The heat collection circulation loop includes a PV / T photovoltaic thermal panel and a phase change water tank that are connected in a loop.

[0008] The heat transfer loop includes a phase change water tank and a dual-source heat pump that are connected in a loop.

[0009] The heating circulation loop includes a dual-source heat pump and a fan coil unit that are connected in a loop.

[0010] The phase change water tank includes a shell, and a first spiral tube heat exchanger and a second spiral tube heat exchanger disposed within the shell.

[0011] The first spiral tube heat exchanger is connected in a closed loop to the PV / T photovoltaic thermal plate, and the second spiral tube heat exchanger is connected in a closed loop to the dual-source heat pump.

[0012] Furthermore, the water outlet of the PV / T photovoltaic thermal plate is connected to the first water inlet at the lower end of the first spiral tube heat exchanger, and the water inlet of the PV / T photovoltaic thermal plate is connected to the first water outlet at the upper end of the first spiral tube heat exchanger.

[0013] Furthermore, a first circulating water pump is installed on the pipeline between the water inlet of the PV / T photovoltaic thermal plate and the first water outlet at the upper end of the first spiral tube heat exchanger.

[0014] Furthermore, the outlet of the dual-source heat pump is connected to the second inlet at the lower end of the second spiral tube heat exchanger, and the first inlet of the dual-source heat pump is connected to the second outlet at the upper end of the second spiral tube heat exchanger.

[0015] Furthermore, a second circulating water pump is provided on the pipeline between the first inlet of the dual-source heat pump and the second outlet at the upper end of the second spiral tube heat exchanger.

[0016] Furthermore, a third circulating water pump is installed on the pipeline between the outlet of the fan coil unit and the second inlet of the dual-source heat pump.

[0017] Furthermore, the second spiral heat exchanger is located within the area enclosed by the first spiral heat exchanger.

[0018] Furthermore, the shell is filled with a phase change material.

[0019] Furthermore, the phase change water tank also includes a phase change material outlet and a phase change material filling port, with the phase change material outlet located at the lower end of the shell and the phase change material filling port located at the upper end of the shell.

[0020] Furthermore, the phase change water tank is also equipped with a fixing component for fixing the first spiral tube heat exchanger and the second spiral tube heat exchanger.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) This utility model provides a PV / T phase change energy storage water source heat pump heating system. The PV / T photovoltaic thermal panel of the system collects solar heat while generating electricity. The generated electricity can drive the heat pump to operate, and the heat energy is used for auxiliary heating or storage. The heat pump uses dual sources to improve heating efficiency, and phase change energy storage reduces energy loss.

[0023] (2) This utility model provides a PV / T phase change energy storage water source heat pump heating system. The system utilizes the latent heat characteristics of phase change material (PCM) to store surplus heat energy or off-peak electricity, and releases heat when solar energy is insufficient, thereby balancing supply and demand fluctuations and improving system stability.

[0024] (3) This utility model provides a PV / T phase change energy storage water source heat pump heating system. The system has low operating costs: solar power reduces the heat pump power consumption, multi-energy complementarity reduces dependence on traditional energy, and greatly improves the comprehensive energy saving rate, which can reach more than 20%. Attached Figure Description

[0025] Figure 1 This is a flowchart of the PV / T phase change energy storage water source heat pump heating system in the embodiment;

[0026] Figure 2 This is a schematic diagram of the phase change water tank in the embodiment;

[0027] The numbers in the diagram indicate: 1-PV / T photovoltaic thermal panel; 2-phase change water tank; 3-first circulating water pump; 4-second circulating water pump; 5-dual-source heat pump; 6-third circulating water pump; 7-fan coil unit; 8-first spiral tube heat exchanger; 9-second spiral tube heat exchanger; 10-phase change material outlet; 11-phase change material filling port; 12-second water inlet; 13-first water inlet; 14-first water outlet; 15-fixture; 16-second water outlet. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0029] Example

[0030] This embodiment provides a PV / T phase change energy storage water source heat pump heating system; the specific structure is shown in [see details]. Figure 1 This includes heat collection circulation loop, heat transfer circulation loop, and heating circulation loop;

[0031] The heat collection circulation loop includes a PV / T photovoltaic thermal panel 1 and a phase change water tank 2 that are connected in a loop;

[0032] The heat transfer circulation loop includes a phase change water tank 2 and a dual-source heat pump 5 connected in a loop.

[0033] The heating circulation loop includes a dual-source heat pump 5 and a fan coil unit 7 that are connected in a circulating manner.

[0034] The phase change water tank 2 includes a shell, and a first spiral tube heat exchanger 8 and a second spiral tube heat exchanger 9 disposed within the shell, as shown in the figure. Figure 2 ;

[0035] The first spiral tube heat exchanger 8 is connected in a closed loop to the PV / T photovoltaic thermal plate 1, and the second spiral tube heat exchanger 9 is connected in a closed loop to the dual-source heat pump 5.

[0036] In this embodiment, the specific structure of the PV / T photovoltaic thermal plate 1 can be found in the PV / T photovoltaic thermal plate in patent CN 220689390U.

[0037] In this embodiment, the water outlet of the PV / T photovoltaic thermal plate 1 is connected to the first water inlet 13 at the lower end of the first spiral tube heat exchanger 8, and the water inlet of the PV / T photovoltaic thermal plate 1 is connected to the first water outlet 14 at the upper end of the first spiral tube heat exchanger 8.

[0038] In this embodiment, a first circulating water pump 3 is provided on the pipeline between the water inlet of the PV / T photovoltaic thermal plate 1 and the first water outlet 14 at the upper end of the first spiral tube heat exchanger 8.

[0039] In this embodiment, the outlet of the dual-source heat pump 5 is connected to the second inlet 12 at the lower end of the second spiral tube heat exchanger 9, and the first inlet of the dual-source heat pump 5 is connected to the second outlet 16 at the upper end of the second spiral tube heat exchanger 9.

[0040] In this embodiment, a second circulating water pump 4 is provided on the pipeline between the first water inlet of the dual-source heat pump 5 and the second water outlet 16 at the upper end of the second spiral tube heat exchanger 9.

[0041] In this embodiment, a third circulating water pump 6 is provided on the pipeline between the outlet of the fan coil unit 7 and the second inlet of the dual-source heat pump 5.

[0042] In this embodiment, the second spiral tube heat exchanger 9 is located within the area enclosed by the first spiral tube heat exchanger 8.

[0043] In this embodiment, the housing is filled with a phase change material.

[0044] In this embodiment, the phase change water tank 2 further includes a phase change material outlet 10 and a phase change material filling port 11. The phase change material outlet 10 is located at the lower end of the shell, and the phase change material filling port 11 is located at the upper end of the shell.

[0045] In this embodiment, the phase change water tank 2 is also provided with a fixing member 15 for fixing the first spiral tube heat exchanger 8 and the second spiral tube heat exchanger 9.

[0046] Specific work process:

[0047] In the system provided in this embodiment, the PV / T photovoltaic thermal panel 1 collects solar heat while generating electricity, and stores the excess heat in the phase change water tank 2 through the first circulating water pump 3 and the first spiral tube heat exchanger 8.

[0048] The second circulating water pump 4 extracts the heat stored in the phase change material in the phase change water tank 2 through the second spiral tube heat exchanger 9, and delivers the 20-30℃ circulating water to the dual-source heat pump 5. The dual-source heat pump 5 starts the water source heat extraction and heating mode, generating 40-45℃ water, which is then delivered to the fan coil unit for indoor heating.

[0049] When the heat stored in the phase change material in phase change water tank 2 is insufficient, the dual-source heat pump unit 5 starts the air source heat extraction mode, generating 40-45℃, which is delivered to the fan coil unit for indoor heating.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A PV / T phase change energy storage water source heat pump heating system, characterized in that, This includes a heat collection circulation loop, a heat transfer circulation loop, and a heating circulation loop; The heat collection circulation loop includes a PV / T photovoltaic thermal panel (1) and a phase change water tank (2) that are connected in a loop; The heat transfer loop includes a phase change water tank (2) and a dual-source heat pump (5) connected in a loop; The heating circulation loop includes a circulating dual-source heat pump (5) and a fan coil unit (7); The phase change water tank (2) includes a shell, a first spiral tube heat exchanger (8) and a second spiral tube heat exchanger (9) disposed within the shell; The first spiral tube heat exchanger (8) is connected in a closed loop to the PV / T photovoltaic thermal plate (1), and the second spiral tube heat exchanger (9) is connected in a closed loop to the dual-source heat pump (5).

2. The PV / T phase change energy storage water source heat pump heating system according to claim 1, characterized in that, The outlet of the PV / T photovoltaic thermal plate (1) is connected to the first inlet (13) at the lower end of the first spiral tube heat exchanger (8), and the inlet of the PV / T photovoltaic thermal plate (1) is connected to the first outlet (14) at the upper end of the first spiral tube heat exchanger (8).

3. The PV / T phase change energy storage water source heat pump heating system according to claim 2, characterized in that, A first circulating water pump (3) is installed on the pipeline between the inlet of the PV / T photovoltaic thermal plate (1) and the first outlet (14) at the upper end of the first spiral tube heat exchanger (8).

4. The PV / T phase change energy storage water source heat pump heating system according to claim 1, characterized in that, The outlet of the dual-source heat pump (5) is connected to the second inlet (12) at the lower end of the second spiral tube heat exchanger (9), and the first inlet of the dual-source heat pump (5) is connected to the second outlet (16) at the upper end of the second spiral tube heat exchanger (9).

5. A PV / T phase change energy storage water source heat pump heating system according to claim 4, characterized in that, A second circulating water pump (4) is installed on the pipeline between the first inlet of the dual-source heat pump (5) and the second outlet (16) at the upper end of the second spiral tube heat exchanger (9).

6. A PV / T phase change energy storage water source heat pump heating system according to claim 1, characterized in that, A third circulating water pump (6) is installed on the pipeline between the outlet of the fan coil unit (7) and the second inlet of the dual-source heat pump (5).

7. A PV / T phase change energy storage water source heat pump heating system according to claim 1, characterized in that, The second spiral heat exchanger (9) is located within the area enclosed by the first spiral heat exchanger (8).

8. A PV / T phase change energy storage water source heat pump heating system according to claim 1, characterized in that, The shell is filled with a phase change material.

9. A PV / T phase change energy storage water source heat pump heating system according to claim 1, characterized in that, The phase change water tank (2) also includes a phase change material outlet (10) and a phase change material filling port (11). The phase change material outlet (10) is located at the lower end of the shell, and the phase change material filling port (11) is located at the upper end of the shell.

10. A PV / T phase change energy storage water source heat pump heating system according to claim 1, characterized in that, The phase change water tank (2) is also equipped with a fixing component (15) for fixing the first spiral tube heat exchanger (8) and the second spiral tube heat exchanger (9).

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