Integrated air source heat pump and photovoltaic photo-thermal linkage triple co-generation system and operation method thereof

Abstract

The invention relates to the technical field of solar energy and air energy heat supply, in particular to an integrated air source heat pump and photovoltaic and photo-thermal linkage triple co-generation system and an operation method thereof.The integrated air source heat pump and photovoltaic and photo-thermal linkage triple co-generation system comprises a PVT photovoltaic module, an air source heat pump, an integrated module, a water using terminal and a heating radiator, and the PVT photovoltaic module is electrically connected with the air source heat pump; the integrated module comprises a heat exchange water tank, an energy supply water tank, a fan coil and a PVT photovoltaic module, photovoltaic power generation is supplied to the air source heat pump, the PVT photovoltaic module absorbs solar energy, converts the solar energy into heat energy, circularly heats water in the heat exchange water tank and supplies the heat energy to a water using terminal, and a water using terminal hot water mode is achieved; the air source heat pump is communicated with the energy supply water tank, a heat exchange coil pipe is arranged in the heat exchange water tank, a water inlet of the heat exchange coil pipe is connected with a host liquid supply pipe through an electric three-way valve, a water outlet of the heat exchange coil pipe is connected with a host liquid return pipe, and the air source heat pump exchanges heat to realize a winter heating mode and a summer refrigeration mode; and the energy supply water tank exchanges heat to realize a cold supply circulation mode and a heat supply circulation mode.

Description

Technical Field

[0001] The present invention relates to the technical field of comprehensive utilization of air energy and renewable energy, and specifically to a trigeneration system of an integrated air source heat pump and photovoltaic thermal energy linkage and an operation method thereof. Background Art

[0002] At present, the current building HVAC system generally adopts a split design, in which the air source heat pump main unit, energy storage tank, fan coil unit, circulation pump group and terminal equipment (such as radiators) are installed independently, and the above equipment is connected through a complex piping system.

[0003] The air source heat pump main unit, water tank, fan coil unit and other equipment need to be installed separately, the piping layout is cumbersome, the equipment is scattered, the construction is complicated, and a large amount of building space is occupied. In particular, it has poor adaptability to existing building renovation projects, low system integration, and poor installation and space utilization.

[0004] The interface specifications of equipment from different manufacturers are not unified, resulting in poor system compatibility, long installation period (usually 3 to 5 days), high labor costs, and low standardization. The operating noise of traditional fan coil units is generally >40dB (A), which can easily cause discomfort in areas with high noise requirements such as bedrooms and study rooms. Low-noise models are expensive and have limited air volume, and fan coil unit noise is disturbing.

[0005] In winter, when a single radiator is used for heating, it takes 1 to 2 hours for the room temperature to rise, which cannot meet the demand for rapid heating; if a fan coil unit is used to assist in heating, the energy consumption will increase sharply due to continuous operation, and the noise problem will be further aggravated, and the heating response will be delayed.

[0006] The pipes between the main unit and the terminal equipment are too long (the transmission distance in a multi-room system often exceeds 20 meters). Heat loss occurs during the transmission of hot and cold water, resulting in a decrease in the overall energy efficiency ratio (COP) of the system. The heat loss in the pipes is significant.

[0007] Traditional systems rely on manual valves to regulate flow, which can easily lead to overflow at the near-end and insufficient energy supply at the far-end. This requires the installation of additional hydraulic balancing valves, increasing costs and potential failure points. Energy transmission and distribution losses are severe, resulting in low system efficiency and hydraulic imbalance at multiple ends. The coupling between the domestic hot water and air conditioning systems is also poor.

[0008] Conventional solutions use electric water heaters or gas boilers to prepare domestic hot water, which has no thermal coupling with the air-conditioning system, resulting in significant energy waste. Independent hot water systems have low energy efficiency. Existing building HVAC systems have problems such as cumbersome installation, high noise, large space occupation, high heat loss, slow heating response in winter, and low energy efficiency. Summary of the Invention

[0009] The purpose of the present invention is to provide an integrated trigeneration system of air source heat pump and photovoltaic thermal energy to solve the problems raised in the above background technology. The present invention innovatively integrates the air source heat pump main unit, PVT photovoltaic panels and integrated modules to form a multi-energy complementary integrated energy supply architecture. The PVT photovoltaic panels can utilize the photovoltaic effect to convert solar energy into electrical energy and thermal energy at the same time, providing the system with the advantage of additional energy supplement.

[0010] To achieve the above objectives, the present invention provides the following technical solutions: an integrated trigeneration system integrating an air source heat pump and photovoltaic and thermal energy, comprising a PVT photovoltaic module, an air source heat pump, an integrated module, a water terminal, and a radiator. The PVT photovoltaic module is electrically connected to the air source heat pump. The integrated module comprises a heat exchange water tank, an energy supply water tank, and a fan coil unit. The PVT photovoltaic module generates photovoltaic power to supply the air source heat pump. The PVT photovoltaic module absorbs solar energy and converts it into heat energy, which is circulated to heat the water in the heat exchange water tank and supplies it to the water terminal, thereby realizing a hot water mode for the water terminal. The air source heat pump and the energy supply water tank are connected through the main unit liquid supply pipe and the main unit return pipe. The main unit return pipe is provided with a main unit circulation pump, and a heat exchange coil is provided in the water exchange water tank. The water inlet of the heat exchange coil is connected to the main unit liquid supply pipe through an electric three-way valve, and the water outlet of the heat exchange coil is connected to the main unit return pipe. The air source heat pump heat exchange realizes winter heating mode and summer cooling mode; when the air source heat pump main unit is cooling in summer, the cold energy is transferred to the energy supply water tank in the integrated module to provide cold air for the room; the air source heat pump main unit, as the core cold and heat conversion equipment, has dual-mode functions of winter heating mode and summer cooling mode.

[0011] While the PVT photovoltaic modules convert electrical energy into the air source heat pump main unit, the hot water generated can be directly used for domestic hot water supply, achieving efficient energy utilization and multiple conversions.

[0012] The integrated installation of the heat exchange water tank, energy supply water tank, fan coil unit, circulation pump and electric three-way valve makes the installation and maintenance of the system easier and faster, significantly shortening the construction period and cost.

[0013] The output of the energy supply water tank is connected in parallel to the fan coil unit and radiator. The fan coil unit's outlet and return air vents are located indoors, and the energy supply water tank heat exchange realizes cooling and heating cycles. The fan coil unit is set up outdoors, and the noise generated by it is effectively physically isolated by the module cabinet, preventing noise from entering the room and significantly improving indoor comfort.

[0014] Through reasonable air duct design and circulation control, the fan disc can more efficiently deliver cold / hot air to the room, improving the energy supply efficiency of the system.

[0015] As a further solution of the present invention, a fan coil water supply pipe and a fan coil water return pipe are provided between the energy supply water tank and the fan coil unit, a fan coil water supply valve and a fan coil water supply pump are provided on the fan coil water supply pipe, an air outlet pipe is provided between the fan coil unit and the air outlet, a return air pipe is provided between the fan coil unit and the return air outlet, and a fresh air outlet is provided on the top of the fan coil unit; The fan coil unit's water supply is connected in parallel to the heating water supply pipe via a tee. This heating water supply pipe is equipped with a heating water supply valve and a heating water supply pump. The energy supply inlet pipe is connected in parallel to the heating return pipe via a tee. The energy supply tank provides unified water supply, enabling energy sharing between air conditioning and heating functions, avoiding the redundant energy consumption associated with separate systems. During transitional seasons, when high daytime indoor temperatures require air conditioning for cooling, while cooler nighttime temperatures require heating, this system can flexibly switch between these two functions based on demand, fully utilizing the energy stored in the energy supply tank and improving energy efficiency.

[0016] The fan coil unit and heating water supply pipes are connected in parallel via a tee, adjusting the water flow based on actual demand and avoiding unnecessary energy waste. When a certain area only requires air conditioning or heating, the water supply valve on the other line is closed to operate the required equipment, reducing system energy consumption.

[0017] The energy supply water tank provides a stable circulating water supply, plays a role of buffering and regulating, reduces the impact of water pressure fluctuations on equipment and pipelines, extends the service life of equipment, and reduces the failure rate of the system.

[0018] As a further embodiment of the present invention, a photovoltaic water supply pipe and a photovoltaic water return pipe are installed between the PVT photovoltaic module and the water exchange tank. The photovoltaic water supply pipe is equipped with a photovoltaic circulation pump. The PVT photovoltaic module can both generate electricity and convert absorbed solar energy into heat energy for heating water. This significantly improves solar energy utilization efficiency, more fully utilizes solar energy resources, and reduces energy waste.

[0019] As a further solution of the present invention, the water exchange tank is provided with a water replenishing port, a water replenishing pipe is provided at the water replenishing port, and a water replenishing valve is provided on the water replenishing pipe. Water is replenished in the water tank in a timely manner through the water replenishing port and the water replenishing pipe.

[0020] As a further embodiment of the present invention, the air-source heat pump comprises an air-source heat pump unit and a condenser. The air-source heat pump unit and condenser are connected by an internal circulation pipeline, and the condenser and the energy supply water tank are connected by a unit liquid supply pipe and a unit liquid return pipe. The air-source heat pump unit absorbs heat from the air, converts it into high-quality thermal energy, and then releases it into the energy supply water tank through the condenser. This efficient use of low-quality thermal energy in the air achieves higher energy efficiency and significant energy savings compared to traditional electric or gas heating methods.

[0021] As a further solution of the present invention, a method for operating a trigeneration system integrating an integrated air source heat pump and photovoltaic thermal energy is provided. The trigeneration system integrates an integrated air source heat pump and photovoltaic thermal energy, wherein in the hot water mode of the water terminal, in summer, the PVT photovoltaic module exchanges heat with solar energy to store hot water in a heat exchange tank, which then supplies the hot water to the water terminal. In winter, the heat medium in the air-source heat pump is fed into the heat exchange coil via an electric three-way valve, heating the water in the heat exchange tank. The water is then supplied to the water terminal. The complementary use of PVT photovoltaic modules and air-source heat pumps improves the system's energy efficiency, reduces reliance on a single energy source, and enhances its reliability and stability.

[0022] As a further solution of the present invention, a method for operating a trigeneration system integrating an integrated air source heat pump and photovoltaic thermal energy is provided, wherein the winter heating mode is as follows: in winter, the air source heat pump generates heat medium, the heat medium exchanges heat through the condenser, and the condenser inputs the heat into the energy supply water tank through the main unit liquid supply pipe.

[0023] As a further solution of the present invention, a method for operating a trigeneration system integrating an integrated air source heat pump and photovoltaic thermal energy is provided, wherein the summer cooling mode is as follows: in summer, the air source heat pump generates refrigerant, the refrigerant exchanges heat through the condenser, and the condenser inputs the cooling energy into the energy supply water tank through the main unit liquid supply pipe.

[0024] As a further solution of the present invention, a method for operating a trigeneration system integrating an integrated air source heat pump and photovoltaic thermal energy is provided, wherein the cooling cycle mode is as follows: cold water is stored in an energy supply water tank, the cold water enters the fan coil through the fan coil water supply pipe, and the fan coil generates cold air which is blown into the room through the outlet pipe and the outlet. Indoor air returns to the fan coil unit through the return air duct and returns to the fan coil unit. It mixes with the fresh air introduced through the fresh air duct and then exchanges heat with the fan coil unit. The resulting cool air is blown into the room through the outlet duct and circulated indoors. This circulation method increases the oxygen concentration through the fresh air, preventing excessive carbon dioxide concentration in the room, which can cause human discomfort.

[0025] As a further solution of the present invention, a method for operating a trigeneration system integrating an integrated air source heat pump and photovoltaic thermal energy is provided, wherein the heating cycle mode is as follows: hot water is stored in an energy supply water tank and the hot water is supplied to fan coil units and radiators respectively; Hot water enters the fan coil unit through the fan coil unit water supply pipe, and the fan coil unit generates cold air that is blown into the room through the outlet duct along the air outlet; the indoor air returns to the fan coil unit through the return air duct through the return air duct, mixes with the outside fresh air introduced through the fresh air vent, and then exchanges heat with the fan coil unit. The generated hot air is blown into the room through the outlet duct along the air outlet for circulating heating; Hot water flows through the heating water supply pipes and enters the radiators, where it exchanges heat with the indoor air to provide heating. Hot water from the energy supply tank is then fed to the fan coil units and radiators, recycling the hot water and improving energy efficiency. This continuous circulation of hot water within the system minimizes heat loss and ensures stable and efficient heating.

[0026] Compared with the existing technology, the beneficial effects of the present invention are as follows: the system includes a PVT photovoltaic module, an air source heat pump, an integrated module, a water terminal and a radiator. The PVT photovoltaic module is electrically connected to the air source heat pump. The integrated module includes a heat exchange water tank, an energy water tank and a fan coil. The PVT photovoltaic module generates photovoltaic power to supply the air source heat pump. The PVT photovoltaic module absorbs solar energy and converts it into heat energy. The heat is circulated to heat the water in the heat exchange water tank and supplied to the water terminal, thereby realizing a hot water mode for the water terminal. The air source heat pump and the energy supply water tank are connected through the main unit liquid supply pipe and the main unit return pipe. The main unit return pipe is provided with a main unit circulation pump, and a heat exchange coil is provided in the water exchange water tank. The water inlet of the heat exchange coil is connected to the main unit liquid supply pipe through an electric three-way valve, and the water outlet of the heat exchange coil is connected to the main unit return pipe. The air source heat pump heat exchange realizes winter heating mode and summer cooling mode; when the air source heat pump main unit is cooling in summer, the cold energy is transferred to the energy supply water tank in the integrated module to provide cold air for the room; the air source heat pump main unit, as the core cold and heat conversion equipment, has dual-mode functions of winter heating mode and summer cooling mode.

[0027] While the PVT photovoltaic modules convert electrical energy into the air source heat pump main unit, the hot water generated can be directly used for domestic hot water supply, achieving efficient energy utilization and multiple conversions.

[0028] The integrated installation of the heat exchange water tank, energy supply water tank, fan coil unit, circulation pump and electric three-way valve makes the installation and maintenance of the system easier and faster, significantly shortening the construction period and cost.

[0029] The output of the energy supply water tank is connected in parallel to the fan coil unit and radiator. The fan coil unit's outlet and return air vents are located indoors, and the energy supply water tank heat exchange realizes cooling and heating cycles. The fan coil unit is set up outdoors, and the noise generated by it is effectively physically isolated by the module cabinet, preventing noise from entering the room and significantly improving indoor comfort.

[0030] Through reasonable air duct design and circulation control, the fan disc can more efficiently deliver cold / hot air to the room, improving the energy supply efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The overall system status of the present invention is shown as follows Figure 1 ; Figure 2This is a schematic diagram of the winter heating mode operation of the present invention; Figure 3 This is a schematic diagram of the summer cooling mode operation of the present invention; Figure 4 Schematic diagram of the integrated module of the present invention.

[0032] In the figure: 1-air source heat pump host, 101-condenser, 102-host liquid supply pipe, 121-electric three-way valve, 103-host liquid return pipe, 131-host circulation pump, 2-PVT photovoltaic module, 202-photovoltaic water supply pipe, 203-photovoltaic return pipe, 231-photovoltaic circulation pump, 3-heat exchange water tank, 301-water supply pipe, 302-heat exchange coil, 4-water terminal , 5- radiator, 501- heating water supply pipe, 511- heating water supply valve, 512- heating water supply pump, 502- heating return pipe, 6- fan coil, 601- fresh air inlet, 602- air outlet pipe, 603- return air pipe, 7- energy supply water tank, 701- fan coil water supply pipe, 711- fan coil water supply valve, 702- fan coil return pipe, 712- fan coil water supply pump. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Example 1 Please see the attached Figure 1 , attached Figure 4 , an integrated trigeneration system integrating air source heat pump and photovoltaic thermal energy, including a PVT photovoltaic module 2, an air source heat pump, an integrated module, a water terminal 4 and a radiator 5. The PVT photovoltaic module 2 is electrically connected to the air source heat pump. The integrated module includes a heat exchange water tank 3, an energy supply water tank 7, and a fan coil 6. The PVT photovoltaic module 2 generates photovoltaic power to supply the air source heat pump.

[0035] At the same time, the PVT photovoltaic module 2 absorbs solar energy and converts it into heat energy, which is then circulated to heat the water in the heat exchange water tank 3 and supplied to the water use terminal. A photovoltaic water supply pipe 202 and a photovoltaic return pipe 203 are provided between the PVT photovoltaic module 2 and the heat exchange water tank 3. A photovoltaic circulation pump 231 is provided on the photovoltaic water supply pipe. When the photovoltaic circulation pump 231 is started, the water in the heat exchange water tank is transported to the PVT photovoltaic module. After absorbing solar energy and heating, the water flows back to the heat exchange water tank through the photovoltaic return pipe for standby use, thereby realizing the hot water mode of the water use terminal. The heat exchange water tank is wrapped with insulation material to reduce heat loss.

[0036] The heat exchange water tank is provided with a water supply port, a water supply pipe 301 is provided at the water supply port, and a water supply valve is provided on the water supply pipe. When the water in the heat exchange water tank continuously supplies the water terminal 4 and the heat exchange water tank needs to be replenished, the water supply valve is opened to replenish water to the water terminal until the water level in the heat exchange water tank reaches a predetermined level.

[0037] In winter, when solar radiation heat exchange cannot meet the heating energy of hot water in the water exchange tank, the air source heat pump is started to assist.

[0038] The air source heat pump is connected to the energy supply water tank 7 through the main unit liquid supply pipe 102 and the main unit return liquid pipe 103. The main unit circulation pump 131 is provided on the main unit return liquid pipe. The air source heat pump includes an air source heat pump main unit and a condenser 101. The air source heat pump main unit and the condenser are connected through an internal circulation pipeline. The condenser 101 is connected to the energy supply water tank 7 through the main unit liquid supply pipe 102 and the main unit return liquid pipe 103.

[0039] The air source heat pump host absorbs heat from the air to exchange heat, and inputs it into the energy supply water tank through the host liquid supply pipe.

[0040] A heat exchange coil 302 is provided in the heat exchange water tank. The water inlet of the heat exchange coil is connected to the main unit liquid supply pipe through an electric three-way valve 121, and the water outlet of the heat exchange coil is connected to the main unit liquid return pipe. When the electric three-way valve is started, the air source heat pump main unit absorbs heat from the air for heat exchange, and enters the heat exchange coil through the main unit liquid supply pipe. The hot water in the heat exchange coil exchanges heat with the water in the heat exchange water tank. The water in the heat exchange water tank is heated to meet the user's usage requirements and is supplied to the water terminal, realizing the hot water mode of the water terminal.

[0041] The air source heat pump heat exchange realizes the winter heating mode and the summer cooling mode; when the air source heat pump host is cooling in the summer, it transfers the cold energy to the energy supply water tank 7 in the integrated module to provide cold air for the room.

[0042] A fan coil water supply pipe 701 and a fan coil return pipe 702 are provided between the energy supply water tank 7 and the fan coil 6. A fan coil water supply valve 711 and a fan coil water supply pump 712 are provided on the fan coil water supply pipe. When the fan coil water supply valve and the fan coil water supply pump are started, the water in the energy supply water tank is transported to the fan coil for heat exchange.

[0043] An outlet duct 602 is provided between the fan coil unit and the air outlet. The fan coil unit exchanges heat with the air. The cold air or hot air is transported into the room through the outlet duct and exchanges heat with the indoor air. The indoor air is cooled or heated accordingly. A return air duct 603 is provided between the fan coil unit and the return air outlet. The indoor air flows back into the fan coil unit through the return air outlet. A fresh air outlet 601 is provided on the top of the fan coil unit. The fresh air outlet inputs new air, which exchanges heat again in the fan coil unit to form cold air or hot air for indoor cooling or heating.

[0044] When the fan coil water supply valve 711 and the fan coil water supply pump 712 are closed, the heating water supply valve and the heating water supply pump are opened.

[0045] The fan coil water supply pipe is connected in parallel with a heating water supply pipe 501 through a tee. The heating water supply pipe is provided with a heating water supply valve 511 and a heating water supply pump 512. The energy supply water inlet pipe is connected in parallel with a heating water return pipe through a tee.

[0046] The water in the energy supply tank is transported to the radiator 5 for heat exchange.

[0047] Example 2 An operating method for a trigeneration system integrating an integrated air source heat pump and photovoltaic thermal energy, wherein in hot water mode of a water terminal: in summer, the PVT photovoltaic module 2 exchanges heat with solar energy to store hot water in a heat exchange tank 3, which then supplies the hot water to the water terminal; In winter, the water in the heat exchange water tank supplied by PVT PV Module 2 falls short of the operating temperature. At this point, the PVT PV Module generates photovoltaic power to supply the air-source heat pump, activating the air-source heat pump. The heat medium in the air-source heat pump is fed into the heat exchange coil via electric three-way valve 121, heating the water in the heat exchange water tank. This hot water is then supplied to the water terminal. PVT PV Module 2 and the air-source heat pump complement each other. If the PVT PV Module's heat exchange is insufficient, the air-source heat pump serves as a supplementary heat source, ensuring stable and reliable system operation and a continuous supply of hot water to the water terminal.

[0048] Example 3 Please see the attached Figure 2 A method for operating a trigeneration system integrating an integrated air-source heat pump and photovoltaic / thermal power generation. In the winter heating mode, the air-source heat pump generates heat medium, which is then transferred to a condenser for heat exchange. The condenser then transfers the heat through the main unit's liquid supply pipe to an energy supply tank 7. The energy supply tank stores hot water for later use.

[0049] Example 4 Please see the attached Figure 3A method for operating a trigeneration system integrating an integrated air-source heat pump and photovoltaic / thermal power generation. In the summer cooling mode, the air-source heat pump generates refrigerant, which then exchanges heat through the condenser. The condenser 101 transfers the cooling energy through the main unit's liquid supply pipe to the energy supply tank 7. The energy supply tank stores cold water for future use.

[0050] Example 5 An operating method for a trigeneration system integrating an integrated air source heat pump and photovoltaic thermal energy. The air source heat pump main unit serves as the core heat and cold conversion device and has dual-mode functions of winter heating mode and summer cooling mode.

[0051] The cooling cycle mode: cold water is stored in the energy supply water tank 7, and the cold water enters the fan coil 6 through the fan coil water supply pipe. The fan coil generates cold air that is blown into the room through the air outlet pipe along the air outlet; Indoor air returns to fan coil unit 6 through the return air duct and returns to the fan coil unit 6. It mixes with the fresh air introduced through fresh air vent 601, then exchanges heat with fan coil unit 6. The resulting cool air is blown into the room through outlet duct 602 and the outlet, where it circulates. This circulation method increases the oxygen concentration through the fresh air, preventing excessively high carbon dioxide concentrations in the room, which can cause discomfort to the human body.

[0052] Example 6 An operating method of a trigeneration system integrating an integrated air source heat pump and photovoltaic thermal energy, wherein the heating cycle mode is as follows: hot water is stored in an energy supply water tank and the hot water is supplied to a fan coil unit 6 and a radiator 5 respectively; Hot water enters the fan coil unit 6 through the fan coil unit water supply pipe, and the fan coil unit generates cold air that is blown into the room through the outlet duct along the air outlet 621; the indoor air returns to the fan coil unit through the return air duct through the return air duct 631, mixes with the outside fresh air introduced through the fresh air vent 601, and then exchanges heat with the fan coil unit. The generated hot air is blown into the room through the outlet duct along the air outlet for circulating heating; Hot water flows through the heating water supply pipes and enters radiator 5, where it exchanges heat with the indoor air to provide heating. Hot water from the energy supply tank is then supplied to fan coil unit 6 and radiator 5, recycling the hot water and improving energy efficiency. This continuous circulation of hot water within the system reduces heat loss and ensures stable and efficient heating.

[0053] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0054] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An integrated air source heat pump and photovoltaic thermal trigeneration system, characterized by: The invention comprises a PVT photovoltaic module (2), an air source heat pump, an integrated module, a water terminal (4) and a radiator (5), wherein the PVT photovoltaic module is electrically connected to the air source heat pump, the integrated module comprises a heat exchange water tank (3), an energy supply water tank (7), and a fan coil (6), the PVT photovoltaic module generates photovoltaic power to supply the air source heat pump, the PVT photovoltaic module absorbs solar energy and converts it into heat energy, heats the water in the heat exchange water tank (3) through circulation and supplies the heat to the water terminal (4), thereby realizing a hot water mode for the water terminal; The air source heat pump (1) is connected to the energy supply water tank (7) via a main unit liquid supply pipe (102) and a main unit liquid return pipe (103). The main unit liquid return pipe is provided with a main unit circulation pump (131). A heat exchange coil (302) is provided in the heat exchange water tank. The water inlet of the heat exchange coil is connected to the main unit liquid supply pipe (102) via an electric three-way valve (121). The water outlet of the heat exchange coil is connected to the main unit liquid return pipe (103). The air source heat pump heat exchange realizes a winter heating mode and a summer cooling mode. The output end of the energy supply water tank (7) is respectively connected in parallel with the fan coil unit and the radiator, the air outlet and return air outlet of the fan coil unit are arranged indoors, and the energy supply water tank (7) realizes the cooling cycle mode and the heating cycle mode through heat exchange.

2. The integrated air source heat pump and photovoltaic thermal trigeneration system according to claim 1 is characterized by: A fan coil water supply pipe (701) and a fan coil water return pipe (702) are provided between the energy supply water tank (7) and the fan coil unit (6); a fan coil water supply valve (711) and a fan coil water supply pump (712) are provided on the fan coil water supply pipe; an air outlet pipe (602) is provided between the fan coil unit and the air outlet; a return air pipe (603) is provided between the fan coil unit and the return air outlet; and a fresh air outlet (601) is provided on the top of the fan coil unit; The fan coil unit water supply pipe is connected in parallel with a heating water supply pipe (501) via a tee, the heating water supply pipe is provided with a heating water supply valve (511) and a heating water supply pump (512), and the energy supply water inlet pipe is connected in parallel with a heating water return pipe (502) via a tee.

3. The integrated air source heat pump and photovoltaic thermal trigeneration system according to claim 2 is characterized by: A photovoltaic water supply pipe (202) and a photovoltaic water return pipe (203) are provided between the PVT photovoltaic assembly (2) and the heat exchange water tank, and a photovoltaic circulation pump (231) is provided on the photovoltaic water supply pipe.

4. The integrated air source heat pump and photovoltaic thermal trigeneration system according to claim 3 is characterized by: The heat exchange water tank is provided with a water supply port, a water supply pipeline (301) is provided at the water supply port, and a water supply valve is provided on the water supply pipeline.

5. The integrated air source heat pump and photovoltaic thermal trigeneration system according to claim 4 is characterized by: The air source heat pump comprises an air source heat pump main unit (1) and a condenser (101), the air source heat pump main unit and the condenser are connected via an internal circulation pipeline, and the condenser and the energy supply water tank are connected via a main unit liquid supply pipe and a main unit liquid return pipe.

6. A method for operating an integrated air source heat pump and photovoltaic / thermal trigeneration system, using the integrated air source heat pump and photovoltaic / thermal trigeneration system of claim 5, characterized in that: The water terminal hot water mode: in summer, the PVT photovoltaic module (2) exchanges heat with solar energy to store hot water in the heat exchange tank (3), and the heat exchange tank supplies the hot water to the water terminal; In winter, the heat medium in the air source heat pump is input into the heat exchange coil through the electric three-way valve (121) to heat the water in the heat exchange water tank, and the heat exchange water tank supplies the hot water to the water terminal (4).

7. The method for operating the integrated air source heat pump and photovoltaic thermal trigeneration system according to claim 6 is characterized by: The winter heating mode: in winter, the air source heat pump (1) generates heat medium, the heat medium is operated through the condenser (101) for heat exchange, and the condenser inputs the heat into the energy supply water tank (7) through the main unit liquid supply pipe.

8. The method for operating the integrated air source heat pump and photovoltaic thermal trigeneration system according to claim 4 is characterized by: The summer cooling mode: in summer, the air source heat pump (1) generates refrigerant, the refrigerant exchanges heat through the condenser, and the condenser inputs the cooling capacity into the energy supply water tank (7) through the main unit liquid supply pipe.

9. The method for operating the integrated air source heat pump and photovoltaic thermal trigeneration system according to claim 5, characterized in that: The cooling cycle mode: cold water is stored in the energy supply water tank (7), and the cold water enters the fan coil (6) through the fan coil water supply pipe, and the fan coil generates cold air that is blown into the room through the air outlet pipe along the air outlet; The indoor air is returned to the fan coil unit (6) through the return air port and the return air duct, mixed with the outside fresh air introduced through the fresh air port, and then heat exchanged with the fan coil unit. The generated cold air is blown into the room along the outlet through the outlet duct for circulation.

10. The method for operating the integrated air source heat pump and photovoltaic thermal trigeneration system according to claim 4, characterized in that: The heating cycle mode: hot water is stored in the energy supply water tank, and the hot water is supplied to the fan coil (6) and the radiator (5) respectively; Hot water enters the fan coil unit (6) through the fan coil unit water supply pipe, and the fan coil unit generates cold air that is blown into the room through the air outlet pipe and along the air outlet (621); The indoor air passes through the return air port (631) and the return air duct back to the fan coil unit (6), is mixed with the outside fresh air introduced through the fresh air port, and then exchanges heat with the fan coil unit. The generated hot air is blown into the room along the outlet through the outlet duct to circulate and provide heating. Hot water enters the radiator (5) through the heating water supply pipe, and the radiator exchanges heat with the indoor air to provide heating.

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