Pump driven pvt-air energy jet-compression combined heat pump cogeneration system

Abstract

The present application relates to a kind of machine pump driving PVT-air energy injection-compression combined heat pump combined heat and power generation system, the system includes refrigerant system, hot water system, chilled water system, power supply system, by compressor, steam ejector, finned heat exchanger, hot water heat exchanger, liquid accumulator, fluorine pump, light focusing PVT array, two-phase ejector, gas-liquid separator, electronic expansion valve, chilled water heat exchanger, three-way valve, check valve, hot water circulating pump, chilled water supply pump, direct current converter, AC / DC inverter composition, can realize combined heat and power generation combined supply.The renewable energy solar energy and air energy system of the present application embodiment are as cold and heat source, multi-source coupling, and the energy structure is reasonable, and system energy production is diversified;With compressor and fluorine pump as system driving force, system energy supply is stable and efficient;Utilize injection refrigeration technology to effectively reduce the throttling loss and overheating loss of heat pump system;System energy saving and efficient, green and low carbon, low in operating cost, with popularization and application value.

Description

Technical Field

[0001] The present invention belongs to the technical field of solar photovoltaic-thermal-air energy composite heat pumps, and in particular to a machine-pump-coupled-drive PVT-air energy injection-compression composite heat pump cooling, heating and power cogeneration system. Background Art

[0002] Currently, both the solar photovoltaic and solar thermal industries have encountered development bottlenecks, necessitating the development of integrated photovoltaic and solar thermal (PVT) technologies that can further enhance the comprehensive utilization efficiency of solar energy. Furthermore, the development of green buildings, clean heating, low-energy, and near-zero-energy building technologies calls for maximizing the use of solar energy to meet building heating, electricity, cooling, and domestic hot water needs. This necessitates addressing the integration of solar heating and cooling, and the integration of solar energy with buildings. In recent years, integrated solar photovoltaic and solar thermal (PVT) heat pump technology, which integrates photovoltaic, solar thermal, and heat pump technologies, has become both a hot topic and a challenging area of ​​research in the solar energy field.

[0003] However, due to the periodicity, intermittency, low energy density, and uneven distribution of solar energy, PVT heat pump technology faces challenges in production stability and reliability, which limits its widespread adoption. Therefore, there is an urgent need to explore multi-source, stable, and efficient heat pump technologies that complement renewable energy sources like solar energy. Summary of the Invention

[0004] In response to the above problems, the purpose of the embodiments of the present invention is to use renewable energy sources such as solar energy and air energy as the cold and heat sources of the system, and compressors and fluorine pumps as the driving force of the system, to effectively integrate and coordinate the injection cooling technology, solar PVT technology, and multi-source coupled heat pump technology, so as to achieve stable, efficient, green and low-carbon diversified energy output of cold, heat and electricity for the system.

[0005] To achieve the above objectives, an embodiment of the present invention provides a PVT-air energy injection-compression composite heat pump cooling, heating and power cogeneration system driven by a motor and pump, the system comprising a refrigerant system, a hot water system, a chilled water system, and a power supply system;

[0006] The refrigerant system mainly consists of a fluorine pump driven PVT-air energy injection refrigeration cycle system and a compressor driven PVT-air energy injection-compression compound cycle system;

[0007] The fluorine pump driven PVT-air energy injection refrigeration cycle system mainly consists of a steam ejector, a fin heat exchanger 1, a hot water heat exchanger, a liquid reservoir, a fluorine pump, a concentrating PVT array, a gas-liquid separator, an electronic expansion valve, a fin heat exchanger 2, a chilled water heat exchanger, a two-way valve, a three-way valve 3, a four-way valve, a two-way valve, a three-way valve, and a five-way valve. The fluorine pump is sequentially connected to the concentrating PVT array and the two-way valve and then splits into two paths, one of which is connected to the three-way valve; the other is connected to the high-pressure inlet end of the steam ejector and its outlet is connected to the two-way valve. After the two paths are combined, they are sequentially connected to the fin heat exchanger 1 and the hot water heat exchanger and then split into two paths, one of which is connected to the fluorine pump inlet through the liquid reservoir; the other is sequentially connected to the low-pressure inlet section of the steam ejector through the three-way valve 3, the gas-liquid separator, the electronic expansion valve, the two fin heat exchanger, the chilled water heat exchanger, the four-way valve, and the five-way valve;

[0008] The compressor-driven PVT-air energy injection-compression compound cycle system mainly consists of a compressor, a finned heat exchanger 1, a hot water heat exchanger, a two-phase ejector, a gas-liquid separator, an electronic expansion valve, a finned heat exchanger 2, a chilled water heat exchanger, a three-way valve 1, a three-way valve 3, a three-way valve 4, and a one-way valve 4. The compressor is separated into two paths after passing through the three-way valve 1, the one-way valve 4, the finned heat exchanger 1, the hot water heat exchanger, the three-way valve 3, the two-phase ejector, and the gas-liquid separator. One path is separated through the top of the gas-liquid separator and then connected to the compressor inlet; the other path is separated through the bottom of the gas-liquid separator and is connected to the electronic expansion valve, the finned heat exchanger 2, the chilled water heat exchanger, the three-way valve 4 in sequence, and then connected to the low-pressure inlet of the two-phase ejector.

[0009] Compressor types include rotary, scroll, and piston;

[0010] The types of hot water heat exchangers and chilled water heat exchangers include flat plate, spiral plate, plate fin, immersed spiral tube, shell and tube, and shell and tube;

[0011] The electronic expansion valve can be replaced by a thermal expansion valve or a capillary tube;

[0012] The types of solar cell elements in concentrating PVT arrays include monocrystalline silicon, polycrystalline silicon, copper indium gallium selenide, gallium arsenide, cadmium telluride, and perovskite.

[0013] The hot water system is mainly composed of a hot water heat exchanger and a hot water circulation pump. The water side of the hot water heat exchanger is connected to the hot water circulation pump through a water pipeline.

[0014] The chilled water system is mainly composed of a chilled water heat exchanger and a chilled water circulation pump. The water side of the chilled water heat exchanger is connected to the chilled water circulation pump through a water pipeline.

[0015] The power supply system mainly consists of a concentrating PVT array, a DC converter, and an AC / DC inverter. The power supply system is divided into two routes: one route is connected to the concentrating PVT array and the DC converter, and the other route is connected to the municipal power grid and the AC / DC inverter. The above two routes are connected to the compressor, the first fan of the finned heat exchanger, the second fan of the finned heat exchanger, the hot water circulation pump, and the chilled water circulation pump.

[0016] The motors of the compressor, finned heat exchanger fan, fluorine pump, finned heat exchanger fan, hot water circulation pump, and chilled water circulation pump are DC driven, and their types include brushless DC, brushed DC, and permanent magnet DC.

[0017] By controlling the opening and closing of the compressor, the fan of finned heat exchanger 1, the fluorine pump, the electronic expansion valve, the fan of finned heat exchanger 2, three-way valve 1, three-way valve 2, three-way valve 3, three-way valve 4, the hot water circulation pump, and the chilled water circulation pump, the system can switch between the following operating modes:

[0018] Mode 1: The fluorine pump and hot water circulation pump are turned on, and the system runs the fluorine pump to drive the solar evaporation-condensation cycle cogeneration mode;

[0019] Mode 2: The fan, fluorine pump, electronic expansion valve, three-way valve 2, three-way valve 3, three-way valve 4, and chilled water circulation pump of finned heat exchanger 1 are turned on, and the system operates in the combined cooling and power generation mode with the fluorine pump driving the air energy injection refrigeration cycle;

[0020] Mode 3: The fluorine pump, electronic expansion valve, three-way valve 2, three-way valve 3, three-way valve 4, and chilled water circulation pump are turned on. The system runs in the combined cooling, heating, and power generation mode driven by the fluorine pump and the solar-air jet refrigeration cycle.

[0021] Mode 4: The compressor, electronic expansion valve, fan of finned heat exchanger 2, and hot water circulation pump are turned on, and the system operates in a compressor-driven air energy injection-compression combined cycle cogeneration mode;

[0022] Mode 5: The compressor, the fan of the finned heat exchanger 1, the electronic expansion valve, and the chilled water circulation pump are turned on, and the system operates in a compressor-driven air energy injection-compression combined cycle cooling and power cogeneration mode;

[0023] Mode 6: The compressor, electronic expansion valve, hot water circulation pump, and chilled water circulation pump are turned on, and the system operates in a compressor-driven ejector-compression combined cycle cooling, heating, and power cogeneration mode using condensation heat as the heat source;

[0024] Mode 7: The compressor, fluorine pump, electronic expansion valve, fan of finned heat exchanger 2, three-way valve 1, three-way valve 2, and hot water circulation pump are turned on, and the system operates in a combined heat and power generation mode of solar energy-air energy injection-compression combined cycle;

[0025] Mode 8: The compressor, the fan of the finned heat exchanger 1, the fluorine pump, the electronic expansion valve, the three-way valve 1, the three-way valve 2, and the chilled water circulation pump are turned on, and the system operates in a combined cooling and power generation mode with a solar-air-energy injection-compression cycle;

[0026] Mode nine, the compressor, fluorine pump, electronic expansion valve, three-way valve one, three-way valve two, hot water circulation pump, and chilled water circulation pump are turned on, and the system operates in a machine-pump joint drive solar jet-compression compound cycle cogeneration mode.

[0027] Beneficial effects of the present invention:

[0028] The embodiment of the present invention can fully utilize renewable energy sources such as solar energy and air energy, realize the complementarity between solar energy and air energy, and achieve high utilization rate of renewable energy in the system;

[0029] The system of the embodiment of the present invention can meet the diversified energy needs of cooling, heating and electricity;

[0030] The embodiment of the present invention can realize the free switching of various operation modes of the system according to the conditions of outdoor solar energy and air energy heat sources, and the system energy supply is reliable and stable;

[0031] The embodiments of the present invention can combine ejector refrigeration technology with multi-source coupled heat pump technology, thereby improving the thermodynamic cycle process, significantly reducing throttling losses and superheating losses in the traditional vapor compression cycle process, and improving compressor efficiency and system energy efficiency.

[0032] The system of the embodiment of the present invention is self-sufficient in production capacity, and the system is efficient, energy-saving, low-carbon, and has low operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the principle of a PVT-air energy injection-compression composite heat pump combined cooling, heating and power generation system driven by a motor and pump according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the principle of a fluorine pump driven solar evaporation-condensation cycle cogeneration mode according to an embodiment of the present invention;

[0035] Figure 3 Schematic diagram of the principles of a fluorine pump driven air energy jet refrigeration cycle combined cooling and power generation mode and a fluorine pump driven solar energy-air energy jet refrigeration cycle combined cooling, heating and power generation mode according to an embodiment of the present invention;

[0036] Figure 4 Schematic diagrams showing the principles of a compressor-driven air energy injection-compression combined cycle cogeneration mode, a compressor-driven air energy injection-compression combined cycle cogeneration mode, and a compressor-driven injection-compression combined cycle cogeneration mode using condensation heat as a heat source according to embodiments of the present invention;

[0037] Figure 5 Schematic diagrams of the principles of the pump-driven solar-air-energy injection-compression combined cycle cogeneration mode, the machine-pump-driven solar-air-energy injection-compression combined cycle cogeneration mode, and the machine-pump-driven solar-energy injection-compression combined cycle cogeneration mode of heat and power.

[0038] Figure numerals: 1-compressor, 2-steam ejector, 3-finned heat exchanger 1, 4-hot water heat exchanger, 5-liquid reservoir, 6-fluorine pump, 7-concentrating PVT array, 8-two-phase ejector, 9-gas-liquid separator, 10-electronic expansion valve, 11-finned heat exchanger 2, 12-chilled water heat exchanger, 13-three-way valve 1, 14-three-way valve 2, 15-three-way valve 3, 16-three-way valve 4, 17-check valve 1, 18-check valve 2, 19-check valve 3, 20-check valve 4, 21-check valve 5, 22-hot water circulation pump, 23-chilled water supply pump, 24-DC converter, 25-AC / DC inverter. DETAILED DESCRIPTION

[0039] 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] like Figure 1 As shown, in this embodiment, a PVT-air energy injection-compression composite heat pump cogeneration system driven by a machine and pump includes a refrigerant system, a hot water system, a chilled water system, and a power supply system.

[0041] The refrigerant system mainly consists of a fluorine pump driven PVT-air energy injection refrigeration cycle system and a compressor driven PVT-air energy injection-compression compound cycle system;

[0042] The fluorine pump driven PVT-air energy injection refrigeration cycle system mainly consists of a steam ejector 2, a finned heat exchanger 1 3, a hot water heat exchanger 4, a liquid storage tank 5, a fluorine pump 6, a concentrating PVT array 7, a gas-liquid separator 9, an electronic expansion valve 10, a finned heat exchanger 2 11, a chilled water heat exchanger 12, a three-way valve 2 14, a three-way valve 3 15, a three-way valve 4 16, a check valve 2 18, a check valve 3 19, and a check valve 5 21, which are connected via a refrigerant pipeline.

[0043] The compressor-driven PVT-air energy injection-compression compound cycle system mainly consists of a compressor 1, a finned heat exchanger 1 3, a hot water heat exchanger 4, a two-phase ejector 8, a gas-liquid separator 9, an electronic expansion valve 10, a finned heat exchanger 2 11, a chilled water heat exchanger 12, a three-way valve 1 13, a three-way valve 3 15, a three-way valve 4 16, and a one-way valve 4 20, which are connected via a refrigerant pipeline.

[0044] The hot water system mainly consists of a hot water heat exchanger 4 and a hot water circulation pump 22 connected via a water pipeline;

[0045] The chilled water system mainly consists of a chilled water heat exchanger 12 and a chilled water circulation pump 23 connected via a water pipeline;

[0046] The power supply system mainly consists of a concentrating PVT array 7, a DC converter 24, and an AC / DC inverter 25 connected via a circuit.

[0047] In this embodiment, by controlling the opening and closing of the compressor 1, the fan of the finned heat exchanger 1 3, the fluorine pump 6, the electronic expansion valve 10, the fan of the finned heat exchanger 2 11, the three-way valve 1 13, the three-way valve 2 14, the three-way valve 3 15, the three-way valve 4 16, the hot water circulation pump 22, and the chilled water circulation pump 23, the system can realize the free switching of various operating modes, thereby realizing diversified energy output of cooling, heating and electricity, and realizing multiple uses of one machine.

[0048] (1) When the solar radiation intensity is high, the ambient temperature is low, and there is only a demand for thermal power, the system runs the fluorine pump to drive the solar evaporation-condensation cycle cogeneration mode, and the fluorine pump 6 and the hot water circulation pump 22 are turned on. Figure 2 As shown, the operating principle is as follows: Liquid refrigerant in the liquid reservoir 5 is pumped by a fluorine pump 6 to the concentrating PVT array 7, where it absorbs solar energy and boils into superheated gaseous refrigerant. This refrigerant then passes through three-way valve 2 14, one-way valve 3 19, and finned heat exchanger 1 3 before entering the hot water heat exchanger 4, dissipating heat into the circulating water and condensing into liquid refrigerant. This refrigerant then enters the liquid reservoir 5. Driven by the hot water circulation pump 22, the circulating water enters the hot water heat exchanger 4, absorbing heat, and circulating in this manner, continuously heating the water. Furthermore, the concentrating PVT array 7 converts solar energy into DC electricity, which is then converted to 750V DC by a DC converter 24 for power supply to the system. If the power generated by the concentrating PVT array 7 exceeds the system's consumption, the excess power is connected to the grid via an AC / DC inverter 25. If the power generated by the concentrating PVT array 7 is less than the system's consumption, the grid is converted to 750V DC by the AC / DC inverter 25 for power supply to the system.

[0049] (2) When the solar radiation intensity is high, the ambient temperature is low, and only the cooling power energy is required, the system runs the fluorine pump driven air energy injection refrigeration cycle cooling and power cogeneration mode, and the fan of the finned heat exchanger 1 3, the fluorine pump 6, the electronic expansion valve 10, the three-way valve 2 14, the three-way valve 3 15, the three-way valve 4 16, and the chilled water circulation pump 23 are turned on. At this time, if Figure 3 As shown, the working principle is as follows: the liquid refrigerant in the liquid storage tank 5 is pumped by the fluorine pump 6 to the concentrating PVT array 7 to absorb solar energy and boil into superheated gaseous refrigerant, and then enters the high-pressure end of the steam ejector 2 through the three-way valve 14 to induced low-pressure gas and mix with it, and then enters the fin heat exchanger 1 3 through the one-way valve 18 to dissipate heat into the air, and is condensed into liquid refrigerant and then divided into two paths, one path passes through the hot water heat exchanger 4 and the liquid storage tank 5 and returns to the fluorine pump 6; the other path passes through the three-way valve 15 and the gas-liquid separator 9 to enter the electronic expansion valve 10 to be throttled into gas-liquid two-phase refrigerant, and enters the chilled water heat exchanger 12 through the fin heat exchanger 11 to absorb the heat of the circulating water and boil into superheated gaseous refrigerant, and then passes through the three-way valve 4 16 and the one-way valve 5 21 back to the low-pressure inlet end of the steam ejector to be injected. Driven by chilled water circulation pump 23, the circulating water enters chilled water heat exchanger 12 to dissipate heat, circulating and continuously cooling. Furthermore, the concentrating PVT array 7 converts solar energy into DC electricity, which is then converted to 750V DC voltage by DC converter 24 for system use. If the power generated by the concentrating PVT array 7 exceeds the system's power consumption, the excess power is connected to the grid via AC / DC inverter 25. If the power generated by the concentrating PVT array 7 is less than the system's power consumption, the grid is converted to 750V DC voltage by AC / DC inverter 25 for system use.

[0050] (3) When the solar radiation intensity is high, the ambient temperature is low, and there is a demand for cooling, heating, and electricity, the system runs the fluorine pump to drive the solar-air jet refrigeration cycle in the cooling, heating, and power cogeneration mode. The fluorine pump 6, the electronic expansion valve 10, the three-way valve 2 14, the three-way valve 3 15, the three-way valve 4 16, and the chilled water circulation pump 23 are turned on. At this time, if Figure 3As shown, the working principle is as follows: the liquid refrigerant in the liquid storage tank 5 is pumped by the fluorine pump 6 to the concentrating PVT array 7 to absorb solar energy and boil into superheated gaseous refrigerant, and then enters the high-pressure end of the steam ejector 2 through the three-way valve 14 to radiate the low-pressure gas and mix with it, and then passes through the one-way valve 18 and the fin-type heat exchanger 3 to enter the hot water heat exchanger 4 to dissipate heat into the circulating water, and is condensed into liquid refrigerant and then divided into two paths, one path passes through the liquid storage tank 5 and returns to the fluorine pump 6; the other path passes through the three-way valve 15 and the gas-liquid separator 9 to enter the electronic expansion valve 10 to be throttled into a gas-liquid two-phase refrigerant, and enters the chilled water heat exchanger 12 through the fin-type heat exchanger 11 to absorb the heat of the circulating water and boil into superheated gaseous refrigerant, and then passes through the three-way valve 16 and the one-way valve 5 21 back to the low-pressure inlet end of the steam ejector to be injected. Driven by hot water circulation pump 22, the circulating water enters hot water heat exchanger 4 to absorb heat, circulating continuously and being heated. Driven by chilled water circulation pump 23, the circulating water enters chilled water heat exchanger 12 to dissipate heat, circulating continuously and being cooled. Furthermore, the concentrating PVT array 7 converts solar energy into DC power, which is then converted to 750V DC by DC converter 24 for power supply to the system. If the power generated by the concentrating PVT array 7 exceeds the system's power consumption, the excess power is connected to the grid via AC / DC inverter 25. If the power generated by the concentrating PVT array 7 is less than the system's power consumption, the grid is converted to 750V DC by AC / DC inverter 25 for power supply to the system.

[0051] (4) When the solar radiation intensity is low, the ambient temperature is high, and there is only a demand for thermal power, the system operates in a compressor-driven air energy injection-compression combined cycle cogeneration mode, with the compressor 1, the electronic expansion valve 10, the fan of the finned heat exchanger 11, and the hot water circulation pump 22 turned on. Figure 4As shown, the operating principle is as follows: High-temperature, high-pressure gaseous refrigerant at the outlet of compressor 1 passes through three-way valve 13, one-way valve 4 20, and finned heat exchanger 3 into hot water heat exchanger 4, where it dissipates heat into the circulating water and is condensed into liquid refrigerant. It then passes through three-way valve 3 15 and enters the high-pressure inlet of two-phase ejector 8, ejecting low-pressure gas. This refrigerant then transforms into a two-phase gas-liquid refrigerant and enters gas-liquid separator 9, where it is separated into two paths. One path, the gaseous refrigerant, returns to compressor 1, while the other path, the liquid refrigerant, is throttled by electronic expansion valve 10 to a gas-liquid two-phase refrigerant. The other path then enters finned heat exchanger 11, where it absorbs air energy and boils into superheated gaseous refrigerant. The refrigerant then passes through chilled water heat exchanger 12 and three-way valve 4 16, where it enters two-phase ejector 8 and is ejected. Driven by hot water circulation pump 22, the circulating water enters hot water heat exchanger 4, where it absorbs heat, continuing the cycle and being continuously heated. In addition, the concentrating PVT array 7 converts solar energy into DC electricity, which is converted into a DC 750V DC voltage for use in the system through the DC converter 24. If the power generated by the concentrating PVT array 7 exceeds the power consumption of the system, the surplus power is connected to the grid through the AC-DC inverter 25. If the power generated by the concentrating PVT array 7 is less than the power consumption of the system, the grid is converted into a DC 750V DC voltage for use in the system through the AC-DC inverter 25.

[0052] (5) When the solar radiation intensity is low, the ambient temperature is high, and there is only a demand for cooling power, the system runs the compressor-driven air energy injection-compression combined cycle cooling and power cogeneration mode, and the compressor 1, the fan of the finned heat exchanger 3, the electronic expansion valve 10, and the chilled water circulation pump 23 are turned on. At this time, if Figure 4 As shown, the operating principle is as follows: High-temperature, high-pressure gaseous refrigerant at the outlet of compressor 1 passes through three-way valve 13, one-way valve 4 20, and finned heat exchanger 1 3, where it dissipates heat to the outdoor air and is condensed into liquid refrigerant. It then passes through hot water heat exchanger 4 and three-way valve 3 15, entering the high-pressure inlet of two-phase ejector 8 to eject low-pressure gas. This refrigerant then becomes a two-phase gas-liquid refrigerant and enters gas-liquid separator 9, where it is separated into two paths: one path, the gaseous refrigerant, which returns to compressor 1; the other path, the liquid refrigerant, which is throttled by electronic expansion valve 10 to form a two-phase gas-liquid refrigerant. It then passes through finned heat exchanger 11 and enters chilled water heat exchanger 12, where it absorbs heat energy from the circulating water and boils into superheated gaseous refrigerant. This refrigerant then passes through three-way valve 4 16 and enters two-phase ejector 8 to be ejected. Driven by chilled water circulation pump 23, the circulating water enters chilled water heat exchanger 12 to dissipate heat, continuing this cycle and being continuously cooled. In addition, the concentrating PVT array 7 converts solar energy into DC electricity, which is converted to a DC 750V DC voltage for use in the system through the DC converter 24. If the power generated by the concentrating PVT array 7 exceeds the power consumption of the system, the surplus power is connected to the grid through the AC-DC inverter 25. If the power generated by the concentrating PVT array 7 is less than the power consumption of the system, the grid is converted to a DC 750V DC voltage for use in the system through the AC-DC inverter 25.

[0053] (6) When the solar radiation intensity is low, the ambient temperature is high, and there is a demand for cooling, heating, and electricity energy, the system operates in a compressor-driven injection-compression combined cycle cooling, heating, and power cogeneration mode with condensation heat as the heat source. The compressor 1, electronic expansion valve 10, hot water circulation pump 22, and chilled water circulation pump 23 are turned on. At this time, if Figure 4 As shown, the operating principle is as follows: High-temperature, high-pressure gaseous refrigerant at the outlet of compressor 1 passes through three-way valve 13, one-way valve 4 20, and finned heat exchanger 3 into hot water heat exchanger 4, where it dissipates heat into the circulating water and is condensed into liquid refrigerant. It then passes through three-way valve 3 15 and enters the high-pressure inlet of two-phase ejector 8, ejecting low-pressure gas. This refrigerant then becomes a two-phase gas-liquid refrigerant and enters gas-liquid separator 9, where it is separated into two paths: one path, the gaseous refrigerant, which returns to compressor 1; the other path, the liquid refrigerant, which is throttled by electronic expansion valve 10 to form a two-phase gas-liquid refrigerant. It then passes through finned heat exchanger 11 and enters chilled water heat exchanger 12, absorbing heat energy from the circulating water and boiling to form superheated gaseous refrigerant. It then passes through three-way valve 4 16 and enters two-phase ejector 8, where it is ejected. Driven by hot water circulation pump 22, the circulating water enters hot water heat exchanger 4 to absorb heat, thereby circulating continuously and being heated. Driven by chilled water circulation pump 23, the circulating water enters chilled water heat exchanger 12 to dissipate heat, thereby circulating continuously and being cooled. In addition, the concentrating PVT array 7 converts solar energy into DC electricity, which is converted into a DC 750V DC voltage for use in the system through the DC converter 24. If the power generated by the concentrating PVT array 7 exceeds the power consumption of the system, the surplus power is connected to the grid through the AC-DC inverter 25. If the power generated by the concentrating PVT array 7 is less than the power consumption of the system, the grid is converted into a DC 750V DC voltage for use in the system through the AC-DC inverter 25.

[0054] (7) When the quality of solar energy and air energy heat sources are close, and only thermoelectric energy is required, the system operates in a pump-driven solar energy-air energy injection-compression combined cycle cogeneration mode, and the compressor 1, fluorine pump 6, electronic expansion valve 10, fan of finned heat exchanger 2 11, three-way valve 1 13, three-way valve 2 14, and hot water circulation pump 22 are turned on. At this time, if Figure 5As shown, the working principle is as follows: the liquid refrigerant in the liquid reservoir 5 is pumped by the fluorine pump 6 to the concentrating PVT array 7 to absorb solar energy and boil into superheated gaseous refrigerant. After that, it enters the high-pressure end of the steam ejector 2 through the three-way valve 14 to inject low-pressure gas and mix with it. After that, it passes through the one-way valve 18 and the fin heat exchanger 3 and enters the hot water heat exchanger 4 to dissipate heat into the circulating water. After being condensed into liquid refrigerant, it is divided into two paths. One path returns to the fluorine pump 6 through the liquid reservoir 5. The other path passes through three-way valve 15 and enters two-phase ejector 8, where low-pressure gas is ejected and converted into a gas-liquid two-phase refrigerant. It then passes through gas-liquid separator 9 and splits into two paths: one path, the gaseous refrigerant, which returns to compressor 1; the other path, the liquid refrigerant, which is throttled by electronic expansion valve 10 to a gas-liquid two-phase refrigerant. It then enters finned heat exchanger 11, where it absorbs air energy and boils into superheated gaseous refrigerant. The refrigerant then passes through chilled water heat exchanger 12 and three-way valve 16, returning to two-phase ejector 8 for ejection. Driven by hot water circulation pump 22, the circulating water enters hot water heat exchanger 4, where it absorbs heat, circulating through this cycle and continuously heating the refrigerant. In addition, the concentrating PVT array 7 converts solar energy into DC electricity, which is converted into a DC 750V DC voltage for use in the system through the DC converter 24. If the power generated by the concentrating PVT array 7 exceeds the power consumption of the system, the surplus power is connected to the grid through the AC-DC inverter 25. If the power generated by the concentrating PVT array 7 is less than the power consumption of the system, the grid is converted into a DC 750V DC voltage for use in the system through the AC-DC inverter 25.

[0055] (8) When the quality of solar energy and air energy heat sources are close, and only cold electricity energy is needed, the system runs the pump-driven solar energy-air energy injection-compression combined cycle cold electricity cogeneration mode, and the compressor 1, the fan of the finned heat exchanger 3, the fluorine pump 6, the electronic expansion valve 10, the three-way valve 13, the three-way valve 2 14, and the chilled water circulation pump 23 are turned on. At this time, if Figure 5As shown, the working principle is as follows: the liquid refrigerant in the liquid storage tank 5 is pumped by the fluorine pump 6 to the concentrating PVT array 7 to absorb solar energy and boil into superheated gaseous refrigerant, and then enters the high-pressure end of the steam ejector 2 through the three-way valve 14 to inject low-pressure gas and mix with it, and then enters the finned heat exchanger 3 through the one-way valve 18 to dissipate heat to the air, and is condensed into liquid refrigerant and then divided into two paths through the hot water heat exchanger 4, one path returns to the fluorine pump 6 through the liquid storage tank 5; the other path After entering the two-phase ejector 8 through three-way valve 3 15 and ejecting low-pressure gas, it becomes a gas-liquid two-phase refrigerant. It then passes through a gas-liquid separator 9 and splits into two paths: one path, the gaseous refrigerant, which returns to the compressor 1; the other path, the liquid refrigerant, which is throttled by the electronic expansion valve 10 to a gas-liquid two-phase refrigerant. It then passes through finned heat exchanger 2 11 and enters the chilled water heat exchanger 12, where it absorbs the heat energy of the circulating water and boils into superheated gaseous refrigerant. It then passes through three-way valve 4 16 and returns to the two-phase ejector 8 to be ejected. Driven by the chilled water circulation pump 23, the circulating water enters the chilled water heat exchanger 12 to dissipate heat, continuing this cycle and being cooled continuously. In addition, the concentrating PVT array 7 converts solar energy into DC electricity, which is converted into a DC 750V DC voltage for use in the system through the DC converter 24. If the power generated by the concentrating PVT array 7 exceeds the power consumption of the system, the surplus power is connected to the grid through the AC-DC inverter 25. If the power generated by the concentrating PVT array 7 is less than the power consumption of the system, the grid is converted into a DC 750V DC voltage for use in the system through the AC-DC inverter 25.

[0056] (9) When the quality of solar energy and air energy is close and there is demand for cooling, heating and power energy, the system runs the pump-driven solar injection-compression combined cycle cooling, heating and power cogeneration mode, and the compressor 1, fluorine pump 6, electronic expansion valve 10, three-way valve 13, three-way valve 2 14, hot water circulation pump 22, and chilled water circulation pump 23 are turned on. At this time, if Figure 5As shown, the working principle is as follows: the liquid refrigerant in the liquid storage tank 5 is pumped by the fluorine pump 6 to the concentrating PVT array 7 to absorb solar energy and boil into superheated gaseous refrigerant, and then enters the high-pressure end of the steam ejector 2 through the three-way valve 14 to inject low-pressure gas and mix with it, and then enters the hot water heat exchanger 4 through the one-way valve 18 and the fin heat exchanger 3 to dissipate heat into the circulating water, and is condensed into liquid refrigerant and then divided into two paths, one path returns to the fluorine pump 6 through the liquid storage tank 5; the other path One path passes through three-way valve 3 15 and enters two-phase ejector 8, where low-pressure gas is ejected and converted into a gas-liquid two-phase refrigerant. It then passes through gas-liquid separator 9 and splits into two paths: one path, the gaseous refrigerant, which returns to compressor 1; the other path, the liquid refrigerant, which is throttled by electronic expansion valve 10 to a gas-liquid two-phase refrigerant. It then passes through finned heat exchanger 2 11 and enters chilled water heat exchanger 12, where it absorbs the heat energy of the circulating water and boils into superheated gaseous refrigerant. It then passes through three-way valve 4 16 and returns to two-phase ejector 8 for ejection. Driven by hot water circulation pump 22, the circulating water enters hot water heat exchanger 4 to absorb heat, thereby circulating and continuously heating. Driven by chilled water circulation pump 23, the circulating water enters chilled water heat exchanger 12 to dissipate heat, thereby continuously cooling. In addition, the concentrating PVT array 7 converts solar energy into DC electricity, which is converted into a DC 750V DC voltage for use in the system through the DC converter 24. If the power generated by the concentrating PVT array 7 exceeds the power consumption of the system, the surplus power is connected to the grid through the AC-DC inverter 25. If the power generated by the concentrating PVT array 7 is less than the power consumption of the system, the grid is converted into a DC 750V DC voltage for use in the system through the AC-DC inverter 25.

[0057] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PVT-air energy injection-compression composite heat pump cooling, heating and power cogeneration system driven by a pump and driven by a pump, characterized in that: The system includes a refrigerant system, a hot water system, a chilled water system, and a power supply system, wherein: The refrigerant system mainly consists of a fluorine pump driven PVT-air energy injection refrigeration cycle system and a compressor driven PVT-air energy injection-compression compound cycle system; The fluorine pump driven PVT-air energy injection refrigeration cycle system mainly comprises a steam ejector (2), a fin type heat exchanger 1 (3), a hot water heat exchanger (4), a liquid storage device (5), a fluorine pump (6), a concentrated PVT array (7), a gas-liquid separator (9), an electronic expansion valve (10), a fin type heat exchanger 2 (11), a chilled water heat exchanger (12), a three-way valve 2 (14), a three-way valve 3 (15), a three-way valve 4 (16), a check valve 2 (18), a check valve 3 (19), and a check valve 5 (21). The fluorine pump (6) is sequentially connected to the concentrated PVT array (7) and the three-way valve 2 (14) and then splits into two paths, one of which is connected to the The one-way valve three (19); the other is connected to the high-pressure inlet end of the steam ejector (2) and its outlet is connected to the one-way valve two (18). The above two routes are combined and connected to the fin-type heat exchanger one (3) and the hot water heat exchanger (4) in sequence, and then separated into two routes, one of which is connected to the inlet of the fluorine pump (6) through the liquid reservoir (5); the other is connected to the low-pressure inlet section of the steam ejector (2) through the three-way valve three (15), the gas-liquid separator (9), the electronic expansion valve (10), the fin-type heat exchanger two (11), the chilled water heat exchanger (12), the three-way valve four (16), and the one-way valve five (21); The compressor-driven PVT-air energy injection-compression compound cycle system mainly comprises a compressor (1), a finned heat exchanger 1 (3), a hot water heat exchanger (4), a two-phase ejector (8), a gas-liquid separator (9), an electronic expansion valve (10), a finned heat exchanger 2 (11), a chilled water heat exchanger (12), a three-way valve 1 (13), a three-way valve 3 (15), a three-way valve 4 (16), and a one-way valve 4 (20). The compressor (1) is sequentially connected to the three-way valve 1 (13), the one-way valve 4 (20), the finned heat exchanger 2 (11), the chilled water heat exchanger 2 (12), the three-way valve 1 (13), the one-way valve 4 (15), the three-way valve 4 (16), and the one-way valve 4 (20). After the heat exchanger 1 (3), the hot water heat exchanger (4), the three-way valve 3 (15), the two-phase ejector (8), and the gas-liquid separator (9), two paths are separated. One path is separated from the top of the gas-liquid separator (9) and then connected to the inlet of the compressor (1); the other path is separated from the bottom of the gas-liquid separator (9) and then connected to the electronic expansion valve (10), the fin-type heat exchanger 2 (11), the chilled water heat exchanger (12), the three-way valve 4 (16) in sequence, and then connected to the low-pressure inlet of the two-phase ejector (8); The hot water system mainly consists of a hot water heat exchanger (4) and a hot water circulation pump (22), and the water side of the hot water heat exchanger (4) is connected to the hot water circulation pump (22) via a water pipeline; The chilled water system mainly consists of a chilled water heat exchanger (12) and a chilled water circulation pump (23), and the water side of the chilled water heat exchanger (12) is connected to the chilled water circulation pump (23) via a water pipeline; The power supply system is mainly composed of a concentrating PVT array (7), a DC converter (24), and an AC / DC inverter (25). The power supply system is divided into two routes, one route is connected to the concentrating PVT array (7) and the DC converter (24), and the other route is connected to the municipal power grid and the AC / DC inverter (25). The above two routes are combined and connected to the compressor (1), the fan of the finned heat exchanger 1 (3), the fan of the finned heat exchanger 2 (11), the hot water circulation pump (22), and the chilled water circulation pump (23).

2. The PVT-air energy injection-compression composite heat pump cooling, heating and power cogeneration system driven by a motor and pump according to claim 1 is characterized in that: By controlling the opening and closing of the compressor (1), the fan of the finned heat exchanger 1 (3), the fluorine pump (6), the electronic expansion valve (10), the fan of the finned heat exchanger 2 (11), the three-way valve 1 (13), the three-way valve 2 (14), the three-way valve 3 (15), the three-way valve 4 (16), the hot water circulation pump (22), and the chilled water circulation pump (23), the system can realize the switching of the following 9 operating modes: Mode 1: the fluorine pump (6) and the hot water circulation pump (22) are turned on, and the system operates in a fluorine pump-driven solar evaporation-condensation cycle cogeneration mode; Mode 2: The fan of the finned heat exchanger 1 (3), the fluorine pump (6), the electronic expansion valve (10), the three-way valve 2 (14), the three-way valve 3 (15), the three-way valve 4 (16), and the chilled water circulation pump (23) are turned on, and the system operates in a fluorine pump-driven air energy injection refrigeration cycle cogeneration mode; Mode three, the fluorine pump (6), the electronic expansion valve (10), the three-way valve two (14), the three-way valve three (15), the three-way valve four (16), and the chilled water circulation pump (23) are turned on, and the system operates in a fluorine pump-driven solar-air jet refrigeration cycle combined cooling, heating, and power generation mode; Mode 4: the compressor (1), the electronic expansion valve (10), the fan of the finned heat exchanger 2 (11), and the hot water circulation pump (22) are turned on, and the system operates in a compressor-driven air energy injection-compression combined cycle cogeneration mode; Mode 5: the compressor (1), the fan of the finned heat exchanger (3), the electronic expansion valve (10), and the chilled water circulation pump (23) are turned on, and the system operates in a compressor-driven air energy injection-compression combined cycle cooling and power cogeneration mode; Mode 6: The compressor (1), the electronic expansion valve (10), the hot water circulation pump (22), and the chilled water circulation pump (23) are turned on, and the system operates in a compressor-driven injection-compression combined cycle cooling, heating, and power cogeneration mode with condensation heat as a heat source; Mode seven, the compressor (1), the fluorine pump (6), the electronic expansion valve (10), the fan of the finned heat exchanger 2 (11), the three-way valve 1 (13), the three-way valve 2 (14), and the hot water circulation pump (22) are turned on, and the system operates in a machine-pump joint drive solar-air energy injection-compression combined cycle cogeneration mode; Mode eight, the compressor (1), the fan of the finned heat exchanger 1 (3), the fluorine pump (6), the electronic expansion valve (10), the three-way valve 1 (13), the three-way valve 2 (14), and the chilled water circulation pump (23) are turned on, and the system operates in a machine-pump joint drive solar energy-air energy injection-compression combined cycle cooling and power cogeneration mode; Mode nine: the compressor (1), the fluorine pump (6), the electronic expansion valve (10), the three-way valve one (13), the three-way valve two (14), the hot water circulation pump (22), and the chilled water circulation pump (23) are turned on, and the system operates in a machine-pump-coupled solar jet-compression combined cycle cooling, heating, and power cogeneration mode.

3. The PVT-air energy injection-compression composite heat pump cooling, heating and power cogeneration system driven by a motor and pump according to claim 1 or 2, characterized in that: The types of the compressor (1) include rotor type, scroll type and piston type.

4. The PVT-air energy injection-compression composite heat pump cooling, heating and power cogeneration system driven by a motor and pump according to claim 1 or 2, characterized in that: The types of the hot water heat exchanger (4) and the chilled water heat exchanger (12) include flat plate type, spiral plate type, plate rib type, immersed spiral tube type, sleeve type, and shell and tube type.

5. The PVT-air energy injection-compression composite heat pump cooling, heating and power cogeneration system driven by a motor and pump according to claim 1 or 2, characterized in that: The electronic expansion valve (10) can be replaced by a thermal expansion valve or a capillary tube.

6. The PVT-air energy injection-compression composite heat pump cooling, heating and power cogeneration system driven by a motor and pump according to claim 1 or 2, characterized in that: The solar cell element types of the concentrating PVT array (7) include single crystal silicon, polycrystalline silicon, copper indium gallium selenide, gallium arsenide, cadmium telluride, and perovskite.

7. The PVT-air energy injection-compression composite heat pump cooling, heating and power cogeneration system driven by a motor and pump according to claim 1 or 2, characterized in that: The motors of the compressor (1), the fan of the finned heat exchanger 1 (3), the fluorine pump (6), the fan of the finned heat exchanger 2 (11), the hot water circulation pump (22), and the chilled water circulation pump (23) are DC-driven, and their types include brushless DC, brushed DC, and permanent magnet DC.

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