Operation mode of heat storage type air source heat pump building energy supply system
By combining air source heat pumps, solar collectors, and phase change heat storage materials, a heat storage air source heat pump system is formed, which solves the problems of low efficiency and unstable energy supply in traditional systems under low temperature conditions. It achieves efficient and stable heating and domestic hot water supply, reducing energy consumption and carbon emissions.
Patent Information
- Application Number
- CN202510609612.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-02-27
AI Technical Summary
Traditional air source heat pump systems are inefficient in low-temperature winter environments, with limited heat pump heating capacity. Furthermore, the time-varying nature of building energy loads leads to insufficient and fluctuating energy supply, making it impossible to stably provide efficient heating and domestic hot water.
By combining air source heat pumps, solar collectors, and phase change thermal storage materials, a thermal storage type air source heat pump building energy supply system is formed. The system stores heat through phase change thermal storage materials and releases it when needed, while solar collectors supplement the heat energy, thereby improving the system's energy efficiency and stability.
It achieves high efficiency and energy saving, stable energy supply, reduces traditional energy consumption and carbon emissions, and meets the multi-functional needs of building heating and domestic hot water.
Smart Images
Figure CN121576635A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a building energy supply system, and more particularly to a heat storage type air source heat pump building energy supply system that combines an air source heat pump, a solar collector, and a phase change heat storage material energy storage device, and its operation mode. Background Technology
[0002] With the escalating global energy crisis and increasingly stringent environmental protection requirements, building energy supply systems are facing increasingly severe challenges. Traditional building energy supply systems, such as gas and coal heating, result in significant carbon dioxide emissions and resource waste, no longer meeting the demands of modern society for energy conservation and environmental protection. Air source heat pumps, as a new type of renewable energy technology, have been widely used in building heating, cooling, and domestic hot water supply. Their main advantage lies in their ability to utilize low-grade heat energy from the ambient air, providing efficient heat energy conversion. However, traditional air source heat pump systems operate at low efficiency in low-temperature winter environments, limiting the heat pump's heating capacity and preventing the system from providing stable and efficient heating services. Furthermore, due to the strong time-varying nature of building energy loads, traditional systems often face insufficient energy supply during peak load periods, leading to energy waste and system load fluctuations.
[0003] By introducing phase change thermal storage materials, heat can be stored and released when needed, maintaining stable energy supply. Furthermore, by combining solar collectors as an auxiliary heat source, renewable energy can supplement the air source heat pump, improving overall system energy efficiency, reducing traditional energy consumption, and lowering carbon emissions. This invention arose in this context, proposing a novel, highly efficient, and energy-saving building energy supply system by combining phase change thermal storage technology and solar collectors, providing strong technical support for addressing the shortcomings of existing technologies. Summary of the Invention
[0004] The purpose of this invention is to provide an operating mode for a heat storage type air source heat pump building energy supply system. By combining an air source heat pump, a solar collector, and a phase change heat storage material, it can achieve efficient supply of building heating and domestic hot water, and improve energy utilization.
[0005] The technical problem solved by this invention is achieved through the following technical solution:
[0006] An operating mode of a heat storage type air source heat pump building energy supply system, characterized in that: the system includes: an evaporator (1), an expansion valve (2), a condenser (3), a compressor (4), a first solenoid valve (5), a first manifold (6), a second solenoid valve (7), a third solenoid valve (8), a circulating water pump a (9), HVAC terminal equipment (10), a filter A (11), a fourth solenoid valve (12), a circulating water pump b (13), a fifth solenoid valve (14), a sixth solenoid valve (15), a phase change heat storage material energy storage container (16), and a seventh solenoid valve. Valve (17), circulating water pump c (18), filter B (19), eighth solenoid valve (20), water storage tank (21), ninth solenoid valve (22), tenth solenoid valve (23), circulating water pump d (24), solar collector (25), constant pressure water supply device (26), eleventh solenoid valve (27), plate heat exchanger (28), second water distribution manifold (29), filter C (30), twelfth solenoid valve (31), filter D (32), circulating water pump e (33), domestic hot water supply equipment (34), energy supply building (35);
[0007] The air source heat pump unit (including evaporator (1), expansion valve (2), condenser (3), and compressor (4)) is sequentially connected to the first manifold (6), the third solenoid valve (8), HVAC terminal equipment (10), circulating water pump a (9), the second solenoid valve (7), and the first solenoid valve (5) to form an air source heat pump heating side circulation loop; the air source heat pump unit is sequentially connected to the first manifold (6), filter A (11), the fourth solenoid valve (12), the water storage tank (21), the circulating water pump b (13), and the first solenoid valve (5) to form an air source heat pump hot water side circulation loop; the air source heat pump unit is sequentially connected to the first manifold (6), the fifth solenoid valve (14), the phase change thermal energy storage container (16), the sixth solenoid valve (15), and the first solenoid valve (5) to form an air source heat pump energy storage side circulation loop; the phase change thermal energy storage container The solar collector (25) is sequentially connected to filter B (19), the eighth solenoid valve (20), the water storage tank (21), the circulating water pump C (18), and the seventh solenoid valve (17) to return to the phase change thermal energy storage container (16) to form a hot water supply circulation loop for the energy storage container; the solar collector (25) is sequentially connected to the eleventh solenoid valve (27), the heat exchanger (28), and the constant pressure water supply device (26) to return to the solar collector (25) to form a solar collector circulation loop; the plate heat exchanger (28) The heat exchanger is connected in sequence to the second water manifold (29), the tenth solenoid valve (23), the phase change thermal energy storage container (16), and the ninth solenoid valve (22) to return to the plate heat exchanger (28) to form a circulation loop on the energy storage side of the heat exchanger; the heat exchanger (28) is connected in sequence to the second water manifold (29), the filter C (30), the twelfth solenoid valve (31), the water storage tank (21), and the circulating water pump d (24) to return to the plate heat exchanger (28) to form a circulation loop on the hot water supply side of the heat exchanger.
[0008] Moreover, the phase change thermal energy storage container (1) is wrapped with a high-efficiency thermal conductive material to improve the heat transfer efficiency.
[0009] Moreover, the solar collector (25) is used to assist the air source heat pump in providing heat energy and improve the system's energy efficiency ratio.
[0010] Moreover, the system can be used for winter heating and year-round domestic hot water supply.
[0011] An operation mode of a thermal storage type air source heat pump building energy supply system includes the following steps:
[0012] Open the first solenoid valve (5), the second solenoid valve (7), the third solenoid valve (8), and the circulating water pump a (9), and the air source heat pump unit directly heats the HVAC terminal equipment (10) as a heat source; open the first solenoid valve (5), the fourth solenoid valve (12), and the circulating water pump b (13), and the air source heat pump unit directly delivers hot water to the water storage tank (21); open the first solenoid valve (5), the fifth solenoid valve (14), and the sixth solenoid valve (15), and the air source heat pump unit and the phase change heat storage container (16) perform phase change heat transfer to store heat; open the ninth solenoid valve (22), the tenth solenoid valve (23), and the eleventh solenoid valve (9). 27) The solar flat plate collector (25) exchanges heat with the plate heat exchanger (28) to store energy for the phase change thermal energy storage container; the eleventh solenoid valve (27), the twelfth solenoid valve (31), and the circulating water pump d (24) are opened, and the solar collector (25) exchanges heat with the heat exchanger to deliver hot water to the water storage tank; the seventh solenoid valve (17), the eighth solenoid valve (20), and the circulating water pump c (18) are opened, and the phase change thermal energy storage container (16) releases the stored heat energy to provide hot water to the water storage tank (21); the circulating water pump e (33) is opened to directly replenish the circulating water to the water storage tank (21) from the domestic hot water supply equipment (34).
[0013] The advantages and beneficial effects of this invention are as follows:
[0014] 1. High efficiency and energy saving: By combining air source heat pumps and solar collectors, renewable energy is fully utilized and the consumption of traditional energy is reduced.
[0015] 2. Stable energy supply: The introduction of phase change thermal storage materials enables the system to provide continuous energy at night or under extreme weather conditions, thus improving the system's stability.
[0016] 3. Environmentally friendly and low-carbon: The system uses clean energy, reducing emissions of greenhouse gases such as carbon dioxide and meeting environmental protection requirements.
[0017] 4. Multifunctional integration: The system can provide not only heating but also domestic hot water, meeting the multifunctional needs of buildings. Attached Figure Description
[0018] Figure 1 This is a diagram illustrating the heat storage type air source heat pump building energy supply system and its operation mode according to the present invention.
[0019] In the diagram: Evaporator (1), Expansion valve (2), Condenser (3), Compressor (4), First solenoid valve (5), First manifold (6), Second solenoid valve (7), Third solenoid valve (8), Circulating water pump a (9), HVAC terminal equipment (10), Filter A (11), Fourth solenoid valve (12), Circulating water pump b (13), Fifth solenoid valve (14), Sixth solenoid valve (15), Phase change thermal energy storage container (16), Seventh solenoid valve (17), Circulating water pump c (18) Filter B (19), eighth solenoid valve (20), water storage tank (21), ninth solenoid valve (22), tenth solenoid valve (23), circulating water pump d (24), solar collector (25), constant pressure water supply device (26), eleventh solenoid valve (27), plate heat exchanger (28), second water distribution manifold (29), filter C (30), twelfth solenoid valve (31), filter D (32), circulating water pump e (33), domestic hot water supply equipment (34), energy supply building (35). Detailed Implementation
[0020] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.
[0021] A thermal storage air source heat pump building energy supply system and its operation mode, mainly comprising an air source heat pump heating side circulation loop, an air source heat pump hot water supply side circulation loop, an air source heat pump energy storage side circulation loop, an energy storage container hot water supply circulation loop, a solar collector circulation loop, a heat exchanger energy storage side circulation loop, and a heat exchanger hot water supply side circulation loop; specifically:
[0022] It includes an evaporator (1), an expansion valve (2), a condenser (3), a compressor (4), a first solenoid valve (5), a first manifold (6), a second solenoid valve (7), a third solenoid valve (8), a circulating water pump a (9), HVAC terminal equipment (10), a filter A (11), a fourth solenoid valve (12), a circulating water pump b (13), a fifth solenoid valve (14), a sixth solenoid valve (15), a phase change thermal energy storage container (16), a seventh solenoid valve (17), and a circulating water pump c (18). Filter B (19), eighth solenoid valve (20), water storage tank (21), ninth solenoid valve (22), tenth solenoid valve (23), circulating water pump d (24), solar collector (25), constant pressure water supply device (26), eleventh solenoid valve (27), plate heat exchanger (28), second water distribution manifold (29), filter C (30), twelfth solenoid valve (31), filter D (32), circulating water pump e (33), domestic hot water supply equipment (34), energy supply building (35);
[0023] The air source heat pump unit (including evaporator (1), expansion valve (2), condenser (3), and compressor (4)) is sequentially connected to the first manifold (6), the third solenoid valve (8), HVAC terminal equipment (10), circulating water pump a (9), the second solenoid valve (7), and the first solenoid valve (5) to form an air source heat pump heating side circulation loop; the air source heat pump unit is sequentially connected to the first manifold (6), filter A (11), the fourth solenoid valve (12), the water storage tank (21), the circulating water pump b (13), and the first solenoid valve (5) to form an air source heat pump hot water side circulation loop; the air source heat pump unit is sequentially connected to the first manifold (6), the fifth solenoid valve (14), the phase change thermal energy storage container (16), the sixth solenoid valve (15), and the first solenoid valve (5) to form an air source heat pump energy storage side circulation loop; the phase change thermal energy storage container The solar collector (25) is sequentially connected to filter B (19), the eighth solenoid valve (20), the water storage tank (21), the circulating water pump C (18), and the seventh solenoid valve (17) to return to the phase change thermal energy storage container (16) to form a hot water supply circulation loop for the energy storage container; the solar collector (25) is sequentially connected to the eleventh solenoid valve (27), the heat exchanger (28), and the constant pressure water supply device (26) to return to the solar collector (25) to form a solar collector circulation loop; the plate heat exchanger (28) The heat exchanger is connected in sequence to the second water manifold (29), the tenth solenoid valve (23), the phase change thermal energy storage container (16), and the ninth solenoid valve (22) to return to the plate heat exchanger (28) to form a circulation loop on the energy storage side of the heat exchanger; the heat exchanger (28) is connected in sequence to the second water manifold (29), the filter C (30), the twelfth solenoid valve (31), the water storage tank (21), and the circulating water pump d (24) to return to the plate heat exchanger (28) to form a circulation loop on the hot water supply side of the heat exchanger.
[0024] An operation mode of a thermal storage type air source heat pump building energy supply system includes the following steps:
[0025] Open the first solenoid valve (5), the second solenoid valve (7), the third solenoid valve (8), and the circulating water pump a (9), and the air source heat pump unit directly heats the HVAC terminal equipment (10) as a heat source; open the first solenoid valve (5), the fourth solenoid valve (12), and the circulating water pump b (13), and the air source heat pump unit directly delivers hot water to the water storage tank (21); open the first solenoid valve (5), the fifth solenoid valve (14), and the sixth solenoid valve (15), and the air source heat pump unit and the phase change heat storage container (16) perform phase change heat transfer to store heat; open the ninth solenoid valve (22), the tenth solenoid valve (23), and the eleventh solenoid valve (9). 27) The solar flat plate collector (25) exchanges heat with the plate heat exchanger (28) to store energy for the phase change thermal energy storage container; the eleventh solenoid valve (27), the twelfth solenoid valve (31), and the circulating water pump d (24) are opened, and the solar collector (25) exchanges heat with the heat exchanger to deliver hot water to the water storage tank; the seventh solenoid valve (17), the eighth solenoid valve (20), and the circulating water pump c (18) are opened, and the phase change thermal energy storage container (16) releases the stored heat energy to provide hot water to the water storage tank (21); the circulating water pump e (33) is opened to directly replenish the circulating water to the water storage tank (21) from the domestic hot water supply equipment (34).
[0026] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.
Claims
1. A mode of operation of a regenerative air source heat pump building energy supply system, characterized in that: The system comprises an evaporator (1), an expansion valve (2), a condenser (3), a compressor (4), a first electromagnetic valve (5), a first water collector (6), a second electromagnetic valve (7), a third electromagnetic valve (8), a circulating water pump a (9), a heating and ventilation terminal device (10), a filter A (11), a fourth electromagnetic valve (12), a circulating water pump b (13), a fifth electromagnetic valve (14), a sixth electromagnetic valve (15), a phase change heat storage material energy storage shelter (16), a seventh electromagnetic valve (17), a circulating water pump c (18), a filter B (19), an eighth electromagnetic valve (20), a water storage tank (21), a ninth electromagnetic valve (22), a tenth electromagnetic valve (23), a circulating water pump d (24), a solar heat collector (25), a constant pressure water supplementing device (26), an eleventh electromagnetic valve (27), a plate heat exchanger (28), a second water collector (29), a filter C (30), a twelfth electromagnetic valve (31), a filter D (32), a circulating water pump e (33), a domestic hot water supply device (34), an energy supply building (35); The air source heat pump unit (including an evaporator (1), an expansion valve (2), a condenser (3), and a compressor (4)) is connected in sequence with a first water collector (6), a third electromagnetic valve (8), a heating and ventilation terminal device (10), a circulating water pump a (9), a second electromagnetic valve (7), a first electromagnetic valve (5), and returns to the air source heat pump unit to form an air source heat pump heating side circulation loop; the air source heat pump unit is connected in sequence with the first water collector (6), a filter A (11), a fourth electromagnetic valve (12), a water storage tank (21), a circulating water pump b (13), and the first electromagnetic valve (5), and returns to the air source heat pump unit to form an air source heat pump hot water side circulation loop; the air source heat pump unit is connected in sequence with the first water collector (6), a fifth electromagnetic valve (14), a phase change heat storage material energy storage shelter (16), a sixth electromagnetic valve (15), and the first electromagnetic valve (5), and returns to the air source heat pump unit to form an air source heat pump energy storage side circulation loop; the phase change heat storage material energy storage shelter is connected in sequence with a filter B (19), an eighth electromagnetic valve (20), a water storage tank (21), a circulating water pump c (18), and a seventh electromagnetic valve (17), and returns to the phase change heat storage material energy storage shelter (16) to form an energy storage shelter hot water circulation loop; the solar heat collector (25) is connected in sequence with an eleventh electromagnetic valve (27), a heat exchanger (28), and a constant pressure water supplementing device (26) to return to the solar heat collector (25) to form a solar heat collector circulation loop; the plate heat exchanger (28) is connected in sequence with a second water collector (29), a tenth electromagnetic valve (23), a phase change heat storage material energy storage shelter (16), and a ninth electromagnetic valve (22) to return to the plate heat exchanger (28) to form a heat exchanger energy storage side circulation loop; the heat exchanger (28) is connected in sequence with the second water collector (29), a filter C (30), a twelfth electromagnetic valve (31), a water storage tank (21), and a circulating water pump d (24) to return to the plate heat exchanger (28) to form a heat exchanger hot water side circulation loop. The operation mode is: Open the first solenoid valve (5), the second solenoid valve (7), the third solenoid valve (8), the circulating water pump a (9), the air source heat pump unit as a heat source for direct heating of heating terminal equipment (10); open the first solenoid valve (5), the fourth solenoid valve (12), the circulating water pump b (13), the air source heat pump unit directly for water storage tank (21) to deliver hot water; open the first solenoid valve (5), the fifth solenoid valve (14), the sixth solenoid valve (15), the air source heat pump unit and phase change heat storage material energy storage shelter (16) to carry out phase change heat transfer to store heat; open the ninth solenoid valve (22), the tenth solenoid valve (23), the eleventh solenoid valve (27), the solar flat plate collector (25) and the plate heat exchanger (28) to carry out heat exchange, for phase change heat storage material energy storage shelter energy storage; open the eleventh solenoid valve (27), the twelfth solenoid valve (31), the circulating water pump d (24), the solar collector (25) and the heat exchanger to carry out heat exchange for water storage tank to deliver hot water; open the seventh solenoid valve (17), the eighth solenoid valve (20), the circulating water pump c (18), the phase change heat storage material energy storage shelter (16) releases the stored heat energy for water storage tank (21) to provide hot water; open the circulating water pump e (33) by life hot water supply equipment (34) directly for water storage tank (21) to supplement the circulating water.
2. The operation mode of the thermal storage type air source heat pump building function system according to claim 1, characterized in that: The phase change heat storage material energy storage shelter (16) is wrapped by high-efficiency heat-conducting material to improve the heat transfer efficiency.
3. The operation mode of the thermal energy storage type air source heat pump building function system according to claim 1, characterized in that: The solar flat plate collector (25) is used to assist the air source heat pump to provide heat energy and improve the system energy efficiency ratio.
4. The operation mode of the thermal energy storage air source heat pump building energy system according to claim 1, characterized in that: The system can be used for winter heating and all-year-round life hot water supply. The system can be used for winter heating and all-year-round life hot water supply.