Solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system and control method

Abstract

This invention provides a solar-powered full-spectrum frequency-division thermo-electric combined-drive air conditioning system and its control method, belonging to the field of solar heat pumps. It addresses the problems of existing solar-powered jet-compression combined refrigeration systems, which cannot effectively utilize all wavelengths of solar energy, suffer from intermittent instability during power supply, and exhibit low cooling efficiency due to excessively high compression ratios under high temperature difference conditions. During conventional cooling, the system allows selection of single-jet cooling, single-compression cooling, jet-compression combined cooling, or dual-jet-compression combined cooling based on daytime or nighttime conditions and cooling requirements, achieving stable all-weather air conditioning while saving energy. In addition to the conventional cooling mode, a dual-jet-compression cooling mode can be operated to achieve high temperature difference cooling while maintaining a constant compression ratio. It fully utilizes solar thermo-electricity for self-generation and consumption, enabling switching between jet and compression air conditioning modes to ensure all-weather air conditioning needs while achieving energy conservation and emission reduction.

Description

Technical Field

[0001] This invention relates to the field of solar heat pump technology, and more specifically, to an air conditioning system and control method driven by a solar full-spectrum frequency-division heat-electric combination. Background Technology

[0002] In recent years, my country's electricity shortage has been gradually increasing, and many cities experience insufficient power supply during peak summer electricity consumption periods. Air conditioning accounts for a significant proportion of electricity consumption in residential buildings, making energy conservation for air conditioning an urgent priority. Solar energy, as a renewable energy source with abundant reserves and enormous development potential, is a significant consideration for utilizing as a power source for air conditioning.

[0003] Currently, there are two types of air conditioners: solar thermal driven and electric driven. Solar thermal driven jet air conditioning systems have a simple structure, stable and reliable operation, and low operating and maintenance costs. However, due to the low system energy efficiency ratio, the energy-saving effect is not obvious when used alone. Solar electric driven compressor air conditioners have a high system energy efficiency ratio and a wide range of applications. However, based on the selective absorption of the solar spectrum by photovoltaic modules, directly using full-spectrum power generation will reduce power generation efficiency and thus reduce the unit's energy efficiency.

[0004] Therefore, the question of which system form to adopt, combining the advantages of full-spectrum solar thermoelectric utilization, jet refrigeration, and compression refrigeration, to achieve the organic coupling of "light-heat-cooling" and "light-electricity-cooling" solar air conditioning while ensuring high efficiency and energy saving, is an urgent problem to be solved.

[0005] Existing patents, including a novel solar jet-compression refrigeration system (application number: CN202111149744.6), a solar jet and compression coupled dual-evaporation refrigeration system (application number: CN202011404168.0), and a cold storage type solar jet-compression composite refrigeration unit (application number: CN201110022737.X), all employ a combination of jet and compression refrigeration methods. However, the conventional solar collectors they utilize have low solar energy utilization rates, meaning they cannot effectively utilize solar energy across the entire wavelength range, and their coordination with the refrigeration system suffers from intermittent instability. Summary of the Invention

[0006] The technical problem to be solved by this invention is:

[0007] To address the issues of existing solar-powered jet compression hybrid refrigeration systems failing to effectively utilize all wavelengths of solar energy and exhibiting intermittent instability when powering the system; and the problems of excessive compression ratio and low refrigeration efficiency in existing two-phase jet-compression structures under high temperature difference conditions.

[0008] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0009] This invention provides a solar-powered full-spectrum frequency-division thermoelectric combined drive air conditioning system, comprising a trough-type solar collector, photovoltaic panels, a frequency divider, collector tubes, an oil tank, an oil circulation pump, a generator, an energy storage converter, a first ejector, a compressor, a condenser, a liquid receiver, a throttle valve, an evaporator, a refrigerant circulation pump, a first regulating valve, a second regulating valve, a third regulating valve, and a fourth regulating valve.

[0010] The oil outlet of the solar collector tube is connected to the oil inlet of the oil tank; the oil outlet of the oil tank is connected to the oil inlet of the oil circulation pump; the oil outlet of the oil circulation pump is connected to the oil inlet of the generator; and the oil outlet of the generator is connected to the oil inlet of the solar collector tube.

[0011] The generator's outlet is connected to the high-pressure inlet of the first ejector. The first ejector's low-pressure inlet is connected to both the compressor's inlet pipe and the evaporator's outlet pipe. A first regulating valve is installed on the first ejector's low-pressure inlet pipe. A third regulating valve is installed on the compressor's inlet pipe. A fourth regulating valve is installed on the compressor's outlet pipe. A second regulating valve is installed on the first ejector's outlet pipe. The first ejector's outlet pipe and the compressor's outlet pipe merge and connect to the condenser's inlet. The condenser's outlet is connected to the receiver's inlet. The receiver's outlet is connected to both the expansion valve's inlet and the refrigerant circulation pump's inlet. The expansion valve's outlet is connected to the evaporator's inlet. The refrigerant circulation pump's outlet is connected to the generator's inlet.

[0012] The evaporator also has a liquid inlet and a liquid outlet on the other side, and the condenser also has a liquid inlet and a liquid outlet on the other side.

[0013] The number of parabolic trough collectors is at least one. When the number of parabolic trough collectors is at least two, the parabolic trough collectors are evenly distributed. Each parabolic trough collector is equipped with a heat collection tube. Multiple heat collection tubes are connected in series. At least one parabolic trough collector is connected to a photovoltaic panel. The photovoltaic panel is connected to an energy storage converter. The energy storage converter is connected to a compressor, an oil circulation pump, and a refrigerant circulation pump, respectively.

[0014] Furthermore, the oil tank can be a thermal storage tank.

[0015] A control method for a solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system.

[0016] During the day, the first and second regulating valves are opened, while the third and fourth regulating valves are closed. The trough solar collector concentrates sunlight and reflects it to the frequency divider. After frequency division, short-wave reflection acts on the photovoltaic panels, generating electricity which is then stored in the energy storage converter. This electricity is converted from DC to AC for nighttime use. The stored electricity in the energy storage converter drives the oil circulation pump and the refrigerant circulation pump. Long-wave transmission acts on the collector tubes to heat the heat transfer oil. This heat acts on the generator as the driving heat source for jet refrigeration. At the same time, cooling water is used as a low-grade heat source to drive the jet refrigeration cycle, ensuring cooling operation during the day.

[0017] At night, the third and fourth regulating valves are opened, while the first and second regulating valves are closed. At night, the stored electrical energy in the energy storage converter is used as the power source for the compressor to directly drive the compression refrigeration cycle, ensuring the refrigeration operation at night.

[0018] A control method for a solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system.

[0019] During the day, the first and second regulating valves are opened, while the third and fourth regulating valves are closed. The trough solar collector concentrates sunlight and reflects it to the frequency divider. After the frequency divider divides the light, the short-wave reflection acts on the photovoltaic panels, generating electricity which is then stored in the energy storage converter. This electricity is converted from DC to AC for nighttime use. The electricity stored in the energy storage converter directly drives the oil circulation pump and the refrigerant circulation pump. The long-wave transmission acts on the collector tubes to heat the heat transfer oil. Part of the heat is stored in the heat storage tank for nighttime use, while the other part acts on the generator as the driving heat source for jet refrigeration. At the same time, cooling water is used as a low-grade heat source to drive the jet refrigeration cycle, ensuring cooling operation during the day.

[0020] At night, the first and second regulating valves are opened first, while the third and fourth regulating valves are closed. When the cooling capacity is insufficient, the third and fourth regulating valves are opened, while the first and second regulating valves are closed. At night, the heat in the heat storage tank is used first to act on the generator as the driving heat source for jet refrigeration, while cooling water is used as a low-grade heat source to drive the jet refrigeration cycle. When the cooling load demand is large and the driving heat of jet refrigeration is insufficient, the stored electrical energy in the energy storage converter is used to directly drive the compression refrigeration cycle to ensure the cooling operation at night. Excess electrical energy can be fed into the grid.

[0021] A solar-powered full-spectrum frequency-division thermoelectric combined-drive air conditioning system includes a trough collector, photovoltaic panels, a frequency divider, collector tubes, an oil tank, an oil circulation pump, a generator, an energy storage converter, a first ejector, a compressor, a condenser, a liquid receiver, a throttling valve, an evaporator, a refrigerant circulation pump, a first regulating valve, a second regulating valve, a third regulating valve, and a fourth regulating valve.

[0022] The oil outlet of the solar collector tube is connected to the oil inlet of the oil tank; the oil outlet of the oil tank is connected to the oil inlet of the oil circulation pump; the oil outlet of the oil circulation pump is connected to the oil inlet of the generator; and the oil outlet of the generator is connected to the oil inlet of the solar collector tube.

[0023] The generator's outlet is connected to the high-pressure inlet of the first ejector. A first regulating valve is installed on the low-pressure inlet pipe of the first ejector. The evaporator's outlet is connected to the compressor's inlet. A third regulating valve is installed on the evaporator's outlet pipe. The compressor's outlet is connected to both the low-pressure inlet of the first ejector and a pipe for merging with the first ejector's outlet. A second regulating valve is installed on the first ejector's outlet pipe. A branch pipe of the compressor's outlet merges with the first ejector's outlet and connects to the condenser's inlet. The condenser's outlet is connected to the inlet of the receiver tank. The receiver tank's outlet is connected to both the throttle valve inlet and the refrigerant circulation pump inlet. The throttle valve outlet is connected to the evaporator's inlet. The refrigerant circulation pump outlet is connected to the generator's inlet.

[0024] The evaporator also has a liquid inlet and a liquid outlet on the other side, and the condenser also has a liquid inlet and a liquid outlet on the other side.

[0025] The number of parabolic trough collectors is at least one. When the number of parabolic trough collectors is at least two, the parabolic trough collectors are evenly distributed. Each parabolic trough collector includes a collector tube, and multiple collector tubes are connected in series. At least one parabolic trough collector is connected to a photovoltaic panel. The photovoltaic panel is connected to an energy storage converter. The energy storage converter is connected to a compressor, an oil circulation pump, and a refrigerant circulation pump.

[0026] Furthermore, it also includes a second ejector, a gas-liquid separator, a fifth regulating valve, a sixth regulating valve, a seventh regulating valve, an eighth regulating valve, a ninth regulating valve, a tenth regulating valve, an eleventh regulating valve, a twelfth regulating valve, a fifth refrigerant line, a fourth ejector refrigerant line, a fifth ejector refrigerant line, a fifth working refrigerant line, a fifth gaseous refrigerant line, a third mixed refrigerant line, a fourth mixed refrigerant line, and a third liquid refrigerant line.

[0027] The liquid outlet of the evaporator is connected to the low-pressure liquid inlet of the second injector and the liquid inlet of the fifth refrigerant line, respectively. A seventh regulating valve is installed on the low-pressure liquid inlet of the second injector, and a twelfth regulating valve is installed on the high-pressure liquid inlet of the second injector. The liquid outlet of the second injector is connected to the liquid inlet of the gas-liquid separator. The gas outlet of the gas-liquid separator is connected to the gas inlet of the fourth ejector refrigerant line. A sixth regulating valve is installed on the fourth ejector refrigerant line. The gas outlets of the fourth and fifth ejector refrigerant lines merge and connect to the gas inlet of the first injector. The gas outlet of the fifth gaseous refrigerant line is connected to the gas inlet of the fifth ejector refrigerant line and the gas inlet of the fifth working refrigerant line, respectively. The gas outlet of the fifth working refrigerant line merges with the gas outlet of the generator and connects to the high-pressure gas inlet of the first injector. A fifth regulating valve is installed on the fifth working refrigerant line. The outlet of the injector is connected to the inlet of the third mixed refrigerant line. The outlet of the third mixed refrigerant line is connected to the inlets of the fourth mixed refrigerant line and the first mixed refrigerant line. An eighth regulating valve is provided on the fourth mixed refrigerant line. The outlets of the fourth mixed refrigerant line and the fifth refrigerant line merge and are connected to the inlet of the compressor. The outlet of the gas-liquid separator is connected to the inlet of the third liquid refrigerant line. A ninth regulating valve is provided on the third liquid refrigerant line. The outlet of the third liquid refrigerant line is connected to the inlet of the throttle valve and one side outlet of the liquid receiver. A tenth regulating valve is provided on the one side outlet pipe of the liquid receiver. The outlet of the condenser is connected to the inlet of the liquid receiver and the inlet of the second injector. An eleventh regulating valve is provided on the inlet pipe of the liquid receiver.

[0028] Furthermore, the oil tank can be a thermal storage tank.

[0029] A control method for a solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system.

[0030] During the day, the first, second, and third regulating valves are opened, and the fourth regulating valve is closed. The trough solar collector concentrates and reflects sunlight to the frequency divider. After the frequency divider divides the sunlight, the short-wave reflection acts on the photovoltaic panels, generating electricity which is then stored in the energy storage converter. This electricity is converted from DC to AC for nighttime use. The electricity stored in the energy storage converter directly drives the oil circulation pump, refrigerant circulation pump, and compressor. The long-wave transmission acts on the collector tubes to heat the heat transfer oil. This heat acts on the generator as the driving heat source for jet refrigeration. At the same time, cooling water is used as a low-grade heat source. The compressor acts as an auxiliary device for jet refrigeration to pressurize the ejector fluid, driving the jet-compression refrigeration cycle to ensure the refrigeration conditions with high cooling load demand during the day.

[0031] At night, the third and fourth regulating valves are opened, while the first and second regulating valves are closed. At night, the stored electrical energy in the energy storage converter is used as the power source for the compressor to directly drive the compression refrigeration cycle, ensuring the refrigeration operation at night.

[0032] A control method for a solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system.

[0033] During the daytime, open the first, second, third, tenth, and eleventh regulating valves, and close the fourth, fifth, sixth, seventh, eighth, ninth, and twelfth regulating valves to run the jet refrigeration cycle with the compressor.

[0034] The parabolic trough collector concentrates sunlight and reflects it to a frequency divider. After frequency division, short-wave reflection acts on the photovoltaic panels to generate electricity, which is then stored in the energy storage converter. This electricity is converted from DC to AC for nighttime use. The electricity in the energy storage converter directly drives the oil circulation pump, refrigerant circulation pump, and compressor. Long-wave transmission acts on the collector tubes to heat the heat transfer oil. This heat acts on the generator as the driving heat source for jet refrigeration. At the same time, cooling water is used as a low-grade heat source. The compressor acts as an auxiliary device for jet refrigeration to pressurize the ejector fluid, driving the jet-compression refrigeration cycle to ensure cooling conditions with high cooling load demand during the day.

[0035] At night, open the third, fourth, tenth, and eleventh regulating valves, and close the first, second, fifth, sixth, seventh, eighth, ninth, and twelfth regulating valves to run a single-compression refrigeration cycle;

[0036] At night, the stored electrical energy in the energy storage converter is used as the power source for the compressor, directly driving the compression refrigeration cycle to ensure the cooling operation at night;

[0037] When operating in dual-jet-compression refrigeration mode

[0038] Open the fourth, fifth, sixth, seventh, eighth, ninth, and twelfth regulating valves, and close the first, second, third, tenth, and eleventh regulating valves to run a low-compression ratio compression refrigeration cycle with the first and second ejectors.

[0039] The electrical energy stored in the energy storage converter is used as the power source for the compressor to drive the jet-compression combined refrigeration. The second ejector serves as an auxiliary device for the compression refrigeration, while the first ejector is driven by the high pressure on the condenser side to increase the pressure at the compressor inlet.

[0040] Furthermore, the trough-type solar collector includes an arc-shaped secondary reflector, a parabolic primary reflector, and a solar collector tube. The central axis of the solar collector tube coincides with the focal line of the parabolic primary reflector. The cross-sections of the parabolic primary reflector and the arc-shaped secondary reflector are both arc-shaped. The arc-shaped secondary reflector is located above the solar collector tube, and the openings of the parabolic primary reflector and the parabolic secondary reflector are arranged facing each other.

[0041] The radius r of the circular arc secondary reflector is...

[0042]

[0043] In the formula, a is the length of OB; b1 is the coefficient between OO′ and radius r; The edge angle of a parabolic primary reflector;

[0044] The width W of the arc-shaped secondary reflector is...

[0045]

[0046] In the formula, α is the tracking error angle; OB is the distance from the intersection point B of the most divergent ray of the parabolic primary mirror and the edge line on the other side to the intersection point O of the parabolic primary mirror surface;

[0047] The position d of the circular arc secondary reflector is...

[0048]

[0049] The arc-shaped secondary reflector is a circular arc structure with point O′ on the vertical line of the heat collection tube as the center, radius r, relative position d from the center of the heat collection tube, and width W.

[0050] Compared with the prior art, the beneficial effects of the present invention are:

[0051] This invention discloses a solar full-spectrum frequency-division heat-electric combined-drive air conditioning system and control method. During the day, solar energy is concentrated and collected by a parabolic trough collector. The short-wave energy after frequency division by a frequency divider acts on the photovoltaic panels for nighttime backup and directly drives the oil circulation pump and refrigerant circulation pump. The long-wave energy acts on the collector tubes as the driving heat source for jet cooling. At night, the electrical energy stored in the energy storage converter drives the compression cooling cycle to ensure nighttime cooling. Alternatively, when the cooling load demand is high during the day or night, a jet-compression combined cooling method can be used. In this case, the heat storage tank can be used as the driving heat source for jet cooling. If the heat storage tank is insufficient, it can be replaced by the energy storage converter, which can ensure nighttime cooling and allow excess electrical energy to be fed into the grid.

[0052] This invention discloses a solar-powered full-spectrum frequency-division thermal-electric combined-drive air conditioning system and control method. It employs a technology of first concentrating sunlight and then dividing the frequency, increasing the total solar beam energy flux density and thus improving solar energy utilization. Simultaneously, it reduces the area required for solar photovoltaic panels and frequency-division films, simplifying tracking control. By setting a parabolic and discrete frequency-division technique that ensures the first reflection after concentration coincides with the focal point of the collector, it reduces the dispersion of sunlight and the heating of photovoltaic panels after frequency division, effectively improving the power generation efficiency of photovoltaic modules. This maximizes the utilization of full-spectrum solar thermal and solar cascade technologies, enhancing the utilization rate of solar energy across all wavelengths.

[0053] This invention discloses a solar-powered full-spectrum frequency-division heat-electric combined drive air conditioning system and control method. Solar energy can be converted into electrical energy through a trough collector to provide energy for daytime jet cooling and into thermal energy to provide energy for nighttime compression cooling. In conventional cooling mode, the cooling method can be selected according to daytime or nighttime and cooling requirements. The cooling methods include single jet cooling, single compression cooling, combined jet-compression cooling, and dual jet-compression cooling. These four cooling methods achieve stable all-weather air conditioning operation while saving energy. In addition to the conventional cooling mode, the dual jet-compression cooling mode can also be operated to achieve high temperature difference cooling while maintaining a constant compression ratio, eliminating the need for an additional set of equipment including an evaporator, condenser, and compressor. Furthermore, it can produce lower-temperature chilled water under the same condensation temperature conditions using energy-saving methods to meet the needs of some special cooling conditions.

[0054] This invention discloses a solar-powered full-spectrum frequency-division thermo-electric combined-drive air conditioning system and control method. The first ejector and compressor adopt a parallel structure, and the two refrigeration systems share a set of evaporators and condensers, which simplifies the structure and effectively reduces costs.

[0055] This invention discloses a solar-powered full-spectrum frequency-division heat-electric combined drive air conditioning system and control method. It uses solar energy, a free and renewable energy source, to drive the air conditioning, and generates and consumes its own heat and electricity, with surplus electricity fed into the grid. This reduces building energy consumption while improving the utilization rate of green energy. Attached Figure Description

[0056] Figure 1 This is the structure of a solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system according to an embodiment of the present invention. Figure 1 ;

[0057] Figure 2 This is the structure of a solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system according to an embodiment of the present invention. Figure 2 ;

[0058] Figure 3 This is the structure of a solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system according to an embodiment of the present invention. Figure 3 ;

[0059] Figure 4 This is the structure of a solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system according to an embodiment of the present invention. Figure 4 ;

[0060] Figure 5 This is the structure of a solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system according to an embodiment of the present invention. Figure 5 ;

[0061] Figure 6 This is the structure of a solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system according to an embodiment of the present invention. Figure 6 ;

[0062] Figure 7 This is a solar radiation path diagram of the slotted laser in an embodiment of the present invention;

[0063] Figure 8 This is a schematic diagram of the arc-shaped secondary reflector system in an embodiment of the present invention;

[0064] Figure 9 This is step one of the design method for the arc-shaped secondary reflector in this embodiment of the invention;

[0065] Figure 10 This is step two of the design method for the arc-shaped secondary reflector in this embodiment of the invention;

[0066] Figure 11 This is step three of the design method for the arc-shaped secondary reflector in this embodiment of the invention;

[0067] Figure 12 This is a diagram illustrating the design method of the arc-shaped secondary reflector for a trough-type concentrating solar collector system with the collector tubes offset vertically upwards, as described in this invention.

[0068] Figure 13 This is a diagram illustrating the design method of the arc-shaped secondary reflector for a trough-type concentrating solar collector system with the collector tube offset vertically downward, as described in this invention.

[0069] Figure 14 This is a schematic diagram of the offset direction when the heat collection tube is offset vertically in an embodiment of the present invention.

[0070] Explanation of reference numerals in the attached figures:

[0071] 1. Parabolic trough collector; 2. Photovoltaic panel; 3. Frequency divider; 4. Collector tube; 5. Oil tank; 6. Oil circulation pump; 7. Generator; 8. Energy storage converter; 9. First ejector; 10. Compressor; 11. Condenser; 12. Liquid receiver; 13. Throttling valve; 14. Evaporator; 15. Refrigerant circulation pump; 16. Thermal storage tank; 17. Second ejector; 18. Gas-liquid separator; 30. First regulating valve; 31. Second regulating valve; 32. Third regulating valve; 33. Fourth regulating valve; 34. Fifth regulating valve; 35. Sixth regulating valve; 36. 37. Seventh regulating valve; 38. Eighth regulating valve; 39. Ninth regulating valve; 30. Tenth regulating valve; 41. Eleventh regulating valve; 42. Twelfth regulating valve; 60. First oil line; 61. Second oil line; 62. Third oil line; 63. Fourth oil line; 64. First working refrigerant line; 65. First mixed refrigerant line; 66. Second gaseous refrigerant line; 67. First liquid refrigerant line; 68. Second liquid refrigerant line; 69. First refrigerant line; 70. Second refrigerant line; 71. First ejector refrigerant line; 7 2. Third refrigerant line; 73. First gaseous refrigerant line; 74. Second working refrigerant line; 75. Third working refrigerant line; 76. First secondary refrigerant line; 77. Second secondary refrigerant line; 78. First cooling medium line; 79. Second cooling medium line; 80. Third gaseous refrigerant line; 81. Second ejector refrigerant line; 82. Fourth refrigerant line; 83. Fourth gaseous refrigerant line; 84. Fifth refrigerant line; 85. Third ejector refrigerant line; 86. Fourth working refrigerant line; 87. Second mixing system Refrigerant piping; 88. Fourth ejector refrigerant piping; 89. Fifth ejector refrigerant piping; 90. Fifth working refrigerant piping; 91. Fifth gaseous refrigerant piping; 92. Sixth working refrigerant piping; 93. Third mixed refrigerant piping; 94. Fourth mixed refrigerant piping; 95. Sixth refrigerant piping; 96. Third liquid refrigerant piping; 97. Fourth liquid refrigerant piping; 98. Fifth liquid refrigerant piping; 120. First power piping; 121. Second power piping; 122. Third power piping; 123. Fourth power piping. Detailed Implementation

[0072] In the description of this invention, it should be noted that the terms used in the various embodiments, such as "upper," "lower," "front," "rear," "left," and "right," which indicate orientation, are only used to simplify the description of the positional relationships based on the accompanying drawings and do not mean that the components and devices referred to must be operated in accordance with the specific orientations and defined operations, methods, and structures in the specification. Such directional terms do not constitute a limitation of this invention.

[0073] In the description of this invention, it should be noted that the terms "first," "second," "third," and "fourth" mentioned in the embodiments of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature.

[0074] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0075] Specific Implementation Plan 1: Combining Figure 1 As shown, this invention provides a solar-powered full-spectrum frequency-division thermoelectric combined-drive air conditioning system, including a trough collector 1, photovoltaic panels 2, a frequency divider 3, collector tubes 4, an oil tank 5, an oil circulation pump 6, a generator 7, an energy storage converter 8, a first ejector 9, a compressor 10, a condenser 11, a liquid receiver 12, a throttle valve 13, an evaporator 14, a refrigerant circulation pump 15, a first regulating valve 30, a second regulating valve 31, a third regulating valve 32, a fourth regulating valve 33, a first oil pipeline 60, a second oil pipeline 61, a third oil pipeline 62, a fourth oil pipeline 63, a first working refrigerant pipeline 64, and a first inlet... The system includes: refrigerant line 71, first mixed refrigerant line 65, first gaseous refrigerant line 73, second gaseous refrigerant line 66, first liquid refrigerant line 67, second liquid refrigerant line 68, first refrigerant line 69, second refrigerant line 70, third refrigerant line 72, second working refrigerant line 74, third working refrigerant line 75, first secondary refrigerant line 76, second secondary refrigerant line 77, first cooling medium line 78, second cooling medium line 79, first power line 120, second power line 121, third power line 122, and fourth power line 123.

[0076] The oil outlet of the collector tube 4 is connected to the oil inlet of the first oil pipeline 60. The oil outlet of the first oil pipeline 60 is connected to the oil inlet of the oil tank 5. The oil outlet of the oil tank 5 is connected to the oil inlet of the second oil pipeline 61. The oil outlet of the second oil pipeline 61 is connected to the oil inlet of the oil circulation pump 6. The oil outlet of the oil circulation pump 6 is connected to the oil inlet of the generator 7. The oil outlet of the generator 7 is connected to the oil inlet of the collector tube 4.

[0077] The outlet of generator 7 is connected to the inlet of the first working refrigerant line 64. The outlet of the first working refrigerant line 64 is connected to the high-pressure inlet of the first ejector 9. The low-pressure inlet of the first ejector 9 is connected to the outlet of the first ejector refrigerant line 71. The first ejector refrigerant line 71 is equipped with a first regulating valve 30. The inlet of the first ejector refrigerant line 71 is connected to the outlet of the second refrigerant line 70 and the inlet of the third refrigerant line 72, respectively. The third refrigerant line 72 is equipped with a third regulating valve 30. The liquid outlet of the third refrigerant line 72 is connected to the liquid inlet of the compressor 10. The liquid outlet of the compressor 10 is connected to the liquid inlet of the first gaseous refrigerant line 73. A fourth regulating valve 33 is provided on the first gaseous refrigerant line 73. The liquid outlet of the first ejector 9 is connected to the liquid inlet of the first mixed refrigerant line 65. A second regulating valve 31 is provided on the first mixed refrigerant line 65. The liquid outlet of the first mixed refrigerant line 65 merges with the liquid outlet of the first gaseous refrigerant line 73 and then merges with the liquid outlet of the second gaseous refrigerant line. The inlet of the second gaseous refrigerant line 66 is connected to the liquid inlet of the condenser 11. The liquid outlet of the condenser 11 is connected to the liquid inlet of the first liquid refrigerant line 67. The liquid outlet of the first liquid refrigerant line 67 is connected to the liquid inlet of the liquid storage tank 12. One side outlet of the liquid storage tank 12 is connected to the liquid inlet of the second liquid refrigerant line 68. The liquid outlet of the second liquid refrigerant line 68 is connected to the liquid inlet of the throttle valve 13. The liquid outlet of the throttle valve 13 is connected to the liquid inlet of the first refrigerant line 69. The outlet of the first refrigerant line 69 is connected to the inlet of the evaporator 14, and the outlet of the evaporator 14 is connected to the inlet of the second refrigerant line 70. The outlet on the other side of the liquid receiver 12 is connected to the inlet of the second working refrigerant line 74, the outlet of the second working refrigerant line 74 is connected to the inlet of the refrigerant circulation pump 15, the outlet of the refrigerant circulation pump 15 is connected to the inlet of the third working refrigerant line 75, and the outlet of the third working refrigerant line 75 is connected to the inlet of the generator 7.

[0078] The outlet of the first refrigerant line 76 is connected to the inlet on the other side of the evaporator 14, the outlet on the other side of the evaporator 14 is connected to the inlet of the second refrigerant line 77, the outlet of the first cooling medium line 78 is connected to the inlet on the other side of the condenser 11, and the outlet on the other side of the condenser 11 is connected to the inlet of the second cooling medium line 79.

[0079] The number of parabolic trough collectors 1 is at least one. When the number of parabolic trough collectors 1 is at least two, the parabolic trough collectors 1 are evenly distributed. Each parabolic trough collector 1 includes a collector tube 4, and multiple collector tubes 4 are connected in series. At least one parabolic trough collector 1 is connected to a photovoltaic panel 2. The photovoltaic panel 2 is connected to an energy storage converter 8. The electrical energy generated by the photovoltaic panel 2 can be stored in the energy storage converter 8, and DC-AC conversion is performed simultaneously. The energy storage converter 8 is connected to a compressor 10, an oil circulation pump 6, and a refrigerant circulation pump 15 as a power source.

[0080] The power outlet of the energy storage converter 8 is connected to the power inlet of the first power line 120. The power outlet of the first power line 120 is connected to the power inlets of the second power line 121, the third power line 122, and the fourth power line 123. The power outlet of the second power line 121 is connected to the power inlet of the oil circulation pump 6. The power outlet of the third power line 122 is connected to the power inlet of the compressor 10. The power outlet of the fourth power line 123 is connected to the power inlet of the refrigerant circulation pump 15.

[0081] The operating principle of this implementation plan is as follows:

[0082] During the summer daytime, the first regulating valve 30 and the second regulating valve 31 are opened, while the third regulating valve 32 and the fourth regulating valve 33 are closed.

[0083] The parabolic trough collector 1 concentrates sunlight to increase its energy flux density, and simultaneously reflects it once to the frequency divider 3. After frequency division by the frequency divider 3, short-wave reflection acts on the photovoltaic panel 2, generating electrical energy, which is then stored in the energy storage converter 8. This energy is converted from DC to AC for nighttime use, and a small portion of the electrical energy directly drives the oil circulation pump 6 and the refrigerant circulation pump 15. Long-wave transmission acts on the collector tube 4 to heat the heat transfer oil. This heat acts on the generator 7 as the driving heat source for jet refrigeration, while cooling water serves as a low-grade heat source to drive the jet refrigeration cycle, ensuring cooling operation during the day.

[0084] During summer nights, the third regulating valve 32 and the fourth regulating valve 33 are opened, while the first regulating valve 30 and the second regulating valve 31 are closed.

[0085] At night, the stored electrical energy in the energy storage converter 8 is used as the power source for the compressor 10 to directly drive the compression refrigeration cycle and ensure the refrigeration operation at night.

[0086] Preferably, the oil tank 5 can be a thermal storage tank 16;

[0087] Combination Figure 2 As shown, the operating principle is as follows:

[0088] During the summer daytime, the first regulating valve 30 and the second regulating valve 31 are opened, while the third regulating valve 32 and the fourth regulating valve 33 are closed.

[0089] The parabolic trough collector 1 concentrates sunlight to increase its energy flux density, and simultaneously reflects it once to the frequency divider 3. After frequency division by the frequency divider 3, short-wave reflection acts on the photovoltaic panel 2, generating electrical energy, which is then stored in the energy storage converter 8. This energy is converted from DC to AC for nighttime use, and a small portion of the electrical energy directly drives the oil circulation pump 6 and the refrigerant circulation pump 15. Long-wave transmission acts on the collector tube 4 to heat the heat transfer oil. Part of this heat is stored in the heat storage tank 16 for nighttime use, and another part acts on the generator 7 as the driving heat source for jet cooling. Simultaneously, cooling water serves as a low-grade heat source to drive the jet cooling cycle, ensuring cooling operation during the day.

[0090] During summer nights, the first regulating valve 30 and the second regulating valve 31 are opened first, while the third regulating valve 32 and the fourth regulating valve 33 are closed. When the cooling capacity is insufficient, the third regulating valve 32 and the fourth regulating valve 33 are opened, while the first regulating valve 30 and the second regulating valve 31 are closed.

[0091] At night, the heat in the heat storage tank 16 is used first to act on the generator 7 as the driving heat source for jet refrigeration, while the cooling water is used as a low-grade heat source to drive the jet refrigeration cycle. When the cooling load demand is large and the driving heat of the jet refrigeration is insufficient, the stored electrical energy in the energy storage converter 8 is used to directly drive the compression refrigeration cycle to ensure the cooling operation at night, and the excess electrical energy is fed into the grid.

[0092] Specific Implementation Plan Two: Combining Figure 3 As shown, this invention provides a solar-powered full-spectrum frequency-division thermoelectric combined-drive air conditioning system, including a trough collector 1, photovoltaic panels 2, a frequency divider 3, collector tubes 4, an oil tank 5, an oil circulation pump 6, a generator 7, an energy storage converter 8, a first ejector 9, a compressor 10, a condenser 11, a liquid receiver 12, a throttle valve 13, an evaporator 14, a refrigerant circulation pump 15, a first regulating valve 30, a second regulating valve 31, a third regulating valve 32, a fourth regulating valve 33, a first oil pipeline 60, a second oil pipeline 61, a third oil pipeline 62, a fourth oil pipeline 63, a first working refrigerant pipeline 64, and a first mixing... Refrigerant line 65, second gaseous refrigerant line 66, first liquid refrigerant line 67, second liquid refrigerant line 68, first refrigerant line 69, second working refrigerant line 74, third working refrigerant line 75, first secondary refrigerant line 76, second secondary refrigerant line 77, first cooling medium line 78, second cooling medium line 79, third gaseous refrigerant line 80, second ejector refrigerant line 81, fourth refrigerant line 82, fourth gaseous refrigerant line 83, first power line 120, second power line 121, third power line 122, and fourth power line 123.

[0093] The oil outlet of the collector tube 4 is connected to the oil inlet of the first oil pipeline 60. The oil outlet of the first oil pipeline 60 is connected to the oil inlet of the oil tank 5. The oil outlet of the oil tank 5 is connected to the oil inlet of the second oil pipeline 61. The oil outlet of the second oil pipeline 61 is connected to the oil inlet of the oil circulation pump 6. The oil outlet of the oil circulation pump 6 is connected to the oil inlet of the generator 7. The oil outlet of the generator 7 is connected to the oil inlet of the collector tube 4.

[0094] The liquid outlet of generator 7 is connected to the liquid inlet of the first working refrigerant line 64. The liquid outlet of the first working refrigerant line 64 is connected to the high-pressure liquid inlet of the first ejector 9. The low-pressure liquid inlet of the first ejector 9 is connected to the liquid outlet of the second ejector refrigerant line 81. The second ejector refrigerant line 81 is equipped with a first regulating valve 30. The liquid outlet of evaporator 14 is connected to the liquid inlet of the fourth refrigerant line 82. The liquid outlet of the fourth refrigerant line 82 is connected to the liquid inlet of compressor 10. The fourth refrigerant line 82 is equipped with... The third regulating valve 32 connects the liquid outlet of the compressor 10 to the liquid inlet of the fourth gaseous refrigerant line 83. The liquid outlet of the fourth gaseous refrigerant line 83 is connected to the liquid inlet of the second ejector refrigerant line 81 and the liquid inlet of the third gaseous refrigerant line 80. The liquid outlet of the first ejector 9 is connected to the liquid inlet of the first mixed refrigerant line 65. The first mixed refrigerant line 65 is equipped with a second regulating valve 31. The liquid outlet of the third gaseous refrigerant line 80 merges with the liquid outlet of the first mixed refrigerant line 65 and then merges with the liquid outlet of the second gaseous refrigerant line 80. The inlet of refrigerant line 66 is connected to the liquid inlet of the second gaseous refrigerant line 66, the outlet of the second gaseous refrigerant line 66 is connected to the liquid inlet of the condenser 11, the outlet of the condenser 11 is connected to the liquid inlet of the first liquid refrigerant line 67, the outlet of the first liquid refrigerant line 67 is connected to the liquid inlet of the liquid storage tank 12, one side outlet of the liquid storage tank 12 is connected to the liquid inlet of the second liquid refrigerant line 68, the outlet of the second liquid refrigerant line 68 is connected to the liquid inlet of the throttle valve 13, and the outlet of the throttle valve 13 is connected to the liquid inlet of the first refrigerant line 69. The liquid outlet of the first refrigerant line 69 is connected to the liquid inlet of the evaporator 14, and the liquid outlet of the evaporator 14 is connected to the liquid inlet of the second refrigerant line 70. The liquid outlet on the other side of the liquid receiver 12 is connected to the liquid inlet of the second working refrigerant line 74, the liquid outlet of the second working refrigerant line 74 is connected to the liquid inlet of the refrigerant circulation pump 15, the liquid outlet of the refrigerant circulation pump 15 is connected to the liquid inlet of the third working refrigerant line 75, and the liquid outlet of the third working refrigerant line 75 is connected to the liquid inlet of the generator 7.

[0095] The outlet of the first refrigerant line 76 is connected to the inlet on the other side of the evaporator 14, the outlet on the other side of the evaporator 14 is connected to the inlet of the second refrigerant line 77, the outlet of the first cooling medium line 78 is connected to the inlet on the other side of the condenser 11, and the outlet on the other side of the condenser 11 is connected to the inlet of the second cooling medium line 79.

[0096] The number of parabolic trough collectors 1 is at least one. When the number of parabolic trough collectors 1 is at least two, the parabolic trough collectors 1 are evenly distributed. Each parabolic trough collector 1 includes a collector tube 4, and multiple collector tubes 4 are connected in series. At least one parabolic trough collector 1 is connected to a photovoltaic panel 2. The photovoltaic panel 2 is connected to an energy storage converter 8. The electrical energy generated by the photovoltaic panel 2 can be stored in the energy storage converter 8, and DC-AC conversion is performed simultaneously. The energy storage converter 8 is connected to a compressor 10, an oil circulation pump 6, and a refrigerant circulation pump 15 as a power source.

[0097] The power outlet of the energy storage converter 8 is connected to the power inlet of the first power line 120. The power outlet of the first power line 120 is connected to the power inlets of the second power line 121, the third power line 122, and the fourth power line 123. The power outlet of the second power line 121 is connected to the power inlet of the oil circulation pump 6. The power outlet of the third power line 122 is connected to the power inlet of the compressor 10. The power outlet of the fourth power line 123 is connected to the power inlet of the refrigerant circulation pump 15.

[0098] The other combinations and connections in this implementation scheme are the same as in Specific Implementation Scheme 1.

[0099] The operating principle of this implementation plan is as follows:

[0100] During the summer daytime, the first regulating valve 30, the second regulating valve 31, and the third regulating valve 32 are opened, while the fourth regulating valve 33 is closed.

[0101] The parabolic trough collector 1 concentrates sunlight to increase its energy flux density and simultaneously reflects it once to the frequency divider 3. After frequency division by the frequency divider 3, short-wave reflection acts on the photovoltaic panel 2, generating electrical energy, which is then stored in the energy storage converter 8. This energy is converted from DC to AC for nighttime use. A portion of the electrical energy directly drives the oil circulation pump 6, the refrigerant circulation pump 15, and the compressor 10. Long-wave transmission acts on the collector tube 4 to heat the heat transfer oil. This heat acts on the generator 7 as the driving heat source for jet refrigeration. Simultaneously, cooling water serves as a low-grade heat source. The compressor 10, as an auxiliary device for jet refrigeration, pressurizes the ejector fluid, driving the jet-compression refrigeration cycle and improving its efficiency, ensuring high cooling loads during the day.

[0102] During summer nights, the third regulating valve 32 and the fourth regulating valve 33 are opened, while the first regulating valve 30 and the second regulating valve 31 are closed.

[0103] At night, the stored electrical energy in the energy storage converter 8 is used as the power source for the compressor 10 to directly drive the compression refrigeration cycle and ensure the refrigeration operation at night.

[0104] Preferably, the oil tank 5 can be a thermal storage tank 16;

[0105] Combination Figure 4 As shown, the operating principle is as follows:

[0106] During the summer daytime, the first regulating valve 30, the second regulating valve 31, and the third regulating valve 32 are opened, while the fourth regulating valve 33 is closed.

[0107] The parabolic trough collector 1 concentrates sunlight to increase its energy flux density, and simultaneously reflects it once to the frequency divider 3. After frequency division by the frequency divider 3, short-wave reflection acts on the photovoltaic panel 2, generating electrical energy, which is then stored in the energy storage converter 8. This energy is converted from DC to AC for nighttime use. A small portion of the electrical energy directly drives the oil circulation pump 6, the refrigerant circulation pump 15, and the compressor 10. Long-wave transmission acts on the collector tube 4 to heat the heat transfer oil. Part of the heat is stored in the heat storage tank 16 for nighttime use, and another part of the heat acts on the generator 7 as the driving heat source for jet refrigeration. At the same time, cooling water is used as a low-grade heat source. The compressor 10, as an auxiliary device for jet refrigeration, pressurizes the ejector fluid, driving the jet-compression refrigeration cycle, improving the efficiency of the jet-compression refrigeration cycle, and ensuring refrigeration conditions with high cooling load demand during the day.

[0108] During summer nights, the first regulating valve 30, the second regulating valve 31, and the third regulating valve 32 are opened first, while the fourth regulating valve 33 is closed. When the cooling capacity is insufficient, the third regulating valve 32 and the fourth regulating valve 33 are opened, while the first regulating valve 30 and the second regulating valve 31 are closed.

[0109] At night, the heat in the heat storage tank 16 is used first to drive the generator 7 as the heat source for jet cooling. At the same time, cooling water is used as a low-grade heat source. The compressor 10 is used as an auxiliary device for jet cooling to pressurize the ejector fluid, thereby driving the jet-compression refrigeration cycle and improving the efficiency of the jet-compression refrigeration cycle. When the cooling load demand is large and the heat driving the jet cooling is insufficient, the stored electrical energy in the energy storage converter 8 is used to directly drive the compression refrigeration cycle to ensure the cooling operation at night. Excess electrical energy is fed into the grid.

[0110] Specific Implementation Plan III. Combination Figure 5As shown, unlike specific implementation scheme two, it also includes a second ejector 17, a gas-liquid separator 18, a fifth regulating valve 34, a sixth regulating valve 35, a seventh regulating valve 36, an eighth regulating valve 37, a ninth regulating valve 38, a tenth regulating valve 39, an eleventh regulating valve 40, a twelfth regulating valve 41, a fifth refrigerant line 84, a third ejector refrigerant line 85, a fourth working refrigerant line 86, a second mixed refrigerant line 87, a fourth ejector refrigerant line 88, a fifth ejector refrigerant line 89, a fifth working refrigerant line 90, a fifth gaseous refrigerant line 91, a sixth working refrigerant line 92, a third mixed refrigerant line 93, a fourth mixed refrigerant line 94, a sixth refrigerant line 95, a third liquid refrigerant line 96, a fourth liquid refrigerant line 97, and a fifth liquid refrigerant line 98.

[0111] The outlet of the fourth refrigerant line 82 is connected to the inlet of the third ejector refrigerant line 85 and the inlet of the fifth refrigerant line 84. The fifth refrigerant line 84 is equipped with a third regulating valve 32, and the third ejector refrigerant line 85 is equipped with a seventh regulating valve 36. The outlet of the third ejector refrigerant line 85 is connected to the low-pressure inlet of the second ejector 17. The outlet of the fourth working refrigerant line 86 is connected to the high-pressure inlet of the second ejector 17. The fourth working refrigerant line 86 is equipped with a twelfth regulating valve 41. The outlet of the second ejector 17 is connected to the inlet of the second mixing refrigerant line 87, and the outlet of the second mixing refrigerant line 87 is connected to the gas-liquid separator 18. The liquid inlet of the gas-liquid separator 18 is connected to the gas inlet of the fourth ejector refrigerant line 88. The fourth ejector refrigerant line 88 is equipped with a sixth regulating valve 35. The gas outlet of the fourth ejector refrigerant line 88 is connected to the gas inlet of the second ejector refrigerant line 81 and the gas outlet of the fifth ejector refrigerant line 89, respectively. The fifth ejector refrigerant line 89 is equipped with a first regulating valve 30. The gas inlet of the fifth ejector refrigerant line 89 is connected to the gas inlet of the fifth working refrigerant line 90 and the gas outlet of the fifth gaseous refrigerant line 91. The gas outlet of the fifth working refrigerant line 90 is connected to the gas outlet of the first working refrigerant line 64 and the gas inlet of the sixth working refrigerant line 92. The outlet of the sixth working refrigerant line 92 is connected to the high-pressure inlet of the first injector 9. The outlet of the first injector 9 is connected to the inlet of the third mixed refrigerant line 93. The outlet of the third mixed refrigerant line 93 and the inlet of the fourth mixed refrigerant line 94 are connected to the inlet of the first mixed refrigerant line 65. The fourth mixed refrigerant line 94 is equipped with an eighth regulating valve 37. The outlet of the fourth mixed refrigerant line 94 is connected to the outlet of the fifth refrigerant line 84 and the inlet of the sixth refrigerant line 95. The outlet of the sixth refrigerant line 95 is connected to the inlet of the compressor 10. The liquid outlet of the gas-liquid separator 18 is connected to the third liquid refrigerant line 96. The inlet of the third liquid refrigerant line 96 is connected to the inlet of the second liquid refrigerant line 68 and the outlet of the fourth liquid refrigerant line 97. The fourth liquid refrigerant line 97 is equipped with a tenth regulating valve 39. The inlet of the fourth liquid refrigerant line 97 is connected to the outlet of one side of the liquid storage tank 12. The inlet of the liquid storage tank 12 is connected to the outlet of the fifth liquid refrigerant line 98. The fifth liquid refrigerant line 98 is equipped with an eleventh regulating valve 40. The inlet of the fifth liquid refrigerant line 98 is connected to the outlet of the first liquid refrigerant line 67 and the inlet of the fourth working refrigerant line 86.

[0112] The other combinations and connections in this implementation scheme are the same as in Specific Implementation Scheme Two.

[0113] The operating principle of this solution is as follows:

[0114] Normal cooling operation mode:

[0115] During the summer daytime, the first regulating valve 30, the second regulating valve 31, the third regulating valve 32, the tenth regulating valve 39 and the eleventh regulating valve 40 are opened, and the fourth regulating valve 33, the fifth regulating valve 34, the sixth regulating valve 35, the seventh regulating valve 36, the eighth regulating valve 37, the ninth regulating valve 38 and the twelfth regulating valve 41 are closed, and the jet refrigeration cycle with compressor 10 is run.

[0116] The parabolic trough collector 1 concentrates sunlight to increase its energy flux density and simultaneously reflects it once to the frequency divider 3. After frequency division by the frequency divider 3, short-wave reflection acts on the photovoltaic panel 2, generating electrical energy, which is then stored in the energy storage converter 8. This energy is converted from DC to AC for nighttime use. A portion of the electrical energy directly drives the oil circulation pump 6, the refrigerant circulation pump 15, and the compressor 10. Long-wave transmission acts on the collector tube 4 to heat the heat transfer oil. This heat acts on the generator 7 as the driving heat source for jet refrigeration. Simultaneously, cooling water serves as a low-grade heat source. The compressor 10, as an auxiliary device for jet refrigeration, pressurizes the ejector fluid, driving the jet-compression refrigeration cycle and improving its efficiency, ensuring high cooling loads during the day.

[0117] During summer nights, the third regulating valve 32, the fourth regulating valve 33, the tenth regulating valve 39, and the eleventh regulating valve 40 are opened, while the first regulating valve 30, the second regulating valve 31, the fifth regulating valve 34, the sixth regulating valve 35, the seventh regulating valve 36, the eighth regulating valve 37, the ninth regulating valve 38, and the twelfth regulating valve 41 are closed, and a single compression refrigeration cycle is run.

[0118] At night, the stored electrical energy in the energy storage converter 8 is used as the power source for the compressor 10 to directly drive the compression refrigeration cycle and ensure the refrigeration operation at night.

[0119] Dual-jet compression refrigeration operation mode:

[0120] Open the fourth regulating valve 33, the fifth regulating valve 34, the sixth regulating valve 35, the seventh regulating valve 36, the eighth regulating valve 37, the ninth regulating valve 38 and the twelfth regulating valve 41, and close the first regulating valve 30, the second regulating valve 31, the third regulating valve 32, the tenth regulating valve 39 and the eleventh regulating valve 40 to run a low compression ratio compression refrigeration cycle with the first ejector 9 and the second ejector 17.

[0121] The electrical energy stored in the energy storage converter 8 serves as the power source for the compressor 10, driving the jet-compression composite refrigeration. The second ejector 17, as an auxiliary device for compression refrigeration, reduces irreversible losses in the expansion device during the refrigeration cycle, improving the system's refrigeration efficiency. The first ejector 9, driven by high pressure on the condenser side, increases the pressure at the inlet of the compressor 10, replacing the original direct connection from the gas-liquid separator 18 to the compressor 10 inlet. On the one hand, this reduces the compression ratio of the entire refrigeration cycle under normal refrigeration conditions, lowers the operating temperature of the compressor 10, improves the stability of the compressor 10, and enhances system performance. On the other hand, by increasing the pressure at the compressor 10 inlet while maintaining a constant compression ratio, this jet-compression composite refrigeration cycle can be applied to refrigeration conditions with high temperature differences without adding unnecessary equipment. It can also produce lower-temperature chilled water under the same condensation temperature conditions using energy-saving methods, thus broadening its application range. For example, it is suitable for special industrial fields such as chemical, petroleum, and gas separation, where high-temperature gas processing is required, or for cryogenic laboratories and cryogenic storage where lower-temperature chilled water is needed.

[0122] Preferably, the oil tank 5 can be a thermal storage tank 16;

[0123] Combination Figure 6 As shown, the operating principle is as follows:

[0124] During the summer daytime, the first regulating valve 30, the second regulating valve 31, the third regulating valve 32, the tenth regulating valve 39 and the eleventh regulating valve 40 are opened, and the fourth regulating valve 33, the fifth regulating valve 34, the sixth regulating valve 35, the seventh regulating valve 36, the eighth regulating valve 37, the ninth regulating valve 38 and the twelfth regulating valve 41 are closed, and the jet refrigeration cycle with compressor 10 is run.

[0125] The parabolic trough collector 1 concentrates sunlight to increase its energy flux density, and simultaneously reflects it once to the frequency divider 3. After frequency division by the frequency divider 3, short-wave reflection acts on the photovoltaic panel 2, generating electrical energy, which is then stored in the energy storage converter 8. This energy is converted from DC to AC for nighttime use. A small portion of the electrical energy directly drives the oil circulation pump 6, the refrigerant circulation pump 15, and the compressor 10. Long-wave transmission acts on the collector tube 4 to heat the heat transfer oil. Part of the heat is stored in the heat storage tank 16 for nighttime use, and another part of the heat acts on the generator 7 as the driving heat source for jet refrigeration. At the same time, cooling water is used as a low-grade heat source. The compressor 10, as an auxiliary device for jet refrigeration, pressurizes the ejector fluid, driving the jet-compression refrigeration cycle, improving the efficiency of the jet-compression refrigeration cycle, and ensuring refrigeration conditions with high cooling load demand during the day.

[0126] During summer nights, the first regulating valve 30, the second regulating valve 31, the third regulating valve 32, the tenth regulating valve 39, and the eleventh regulating valve 40 are opened first, while the fourth regulating valve 33, the fifth regulating valve 34, the sixth regulating valve 35, the seventh regulating valve 36, the eighth regulating valve 37, the ninth regulating valve 38, and the twelfth regulating valve 41 are closed. When the cooling capacity is insufficient, the third regulating valve 32, the fourth regulating valve 33, the tenth regulating valve 39, and the eleventh regulating valve 40 are opened, while the first regulating valve 30, the second regulating valve 31, the fifth regulating valve 34, the sixth regulating valve 35, the seventh regulating valve 36, the eighth regulating valve 37, the ninth regulating valve 38, and the twelfth regulating valve 41 are closed.

[0127] At night, the heat in the heat storage tank 16 is used first to drive the generator 7 as the heat source for jet cooling. At the same time, cooling water is used as a low-grade heat source. The compressor 10 is used as an auxiliary device for jet cooling to pressurize the ejector fluid, thereby driving the jet-compression refrigeration cycle and improving the efficiency of the jet-compression refrigeration cycle. When the cooling load demand is large and the heat driving the jet cooling is insufficient, the stored electrical energy in the energy storage converter 8 is used to directly drive the compression refrigeration cycle to ensure the cooling operation at night. Excess electrical energy is fed into the grid.

[0128] Dual-jet compression refrigeration operation mode:

[0129] Open the fourth regulating valve 33, the fifth regulating valve 34, the sixth regulating valve 35, the seventh regulating valve 36, the eighth regulating valve 37, the ninth regulating valve 38 and the twelfth regulating valve 41, and close the first regulating valve 30, the second regulating valve 31, the third regulating valve 32, the tenth regulating valve 39 and the eleventh regulating valve 40 to run a low compression ratio compression refrigeration cycle with the first ejector 9 and the second ejector 17.

[0130] The electrical energy stored in the energy storage converter 8 serves as the power source for the compressor 10, driving the jet-compression composite refrigeration. The second ejector 17, as an auxiliary device for compression refrigeration, reduces irreversible losses in the expansion device during the refrigeration cycle, improving the system's refrigeration efficiency. The first ejector 9, driven by high pressure on the condenser side, increases the pressure at the inlet of the compressor 10, replacing the original direct connection from the gas-liquid separator 18 to the compressor 10 inlet. On the one hand, this reduces the compression ratio of the entire refrigeration cycle under normal refrigeration conditions, lowers the operating temperature of the compressor 10, improves the stability of the compressor 10, and enhances system performance. On the other hand, by increasing the pressure at the compressor 10 inlet while maintaining a constant compression ratio, this jet-compression composite refrigeration cycle can be applied to refrigeration conditions with high temperature differences without adding unnecessary equipment. It can also produce lower-temperature chilled water under the same condensation temperature conditions using energy-saving methods, thus broadening its application range. For example, it is suitable for special industrial fields such as chemical, petroleum, and gas separation, where high-temperature gas processing is required, or for cryogenic laboratories and cryogenic storage where lower-temperature chilled water is needed.

[0131] Specific Implementation Plan IV. Combination Figures 8 to 14 As shown, the trough-type solar collector 1 includes an arc-shaped secondary reflector, a parabolic primary reflector, and a solar collector tube. The central axis of the solar collector tube coincides with the focal line of the parabolic primary reflector. The cross-sections of the parabolic primary reflector and the arc-shaped secondary reflector are both arc-shaped. The arc-shaped secondary reflector is located above the solar collector tube, and the openings of the parabolic primary reflector and the parabolic secondary reflector are arranged facing each other.

[0132] The other combinations and connections in this implementation scheme are the same as those in specific implementation schemes one, two, or three.

[0133] Specific Implementation Plan V. Combination Figures 8 to 14 As shown, the design method of the circular arc secondary reflector includes the following steps:

[0134] The parabolic equation of the primary reflector is x. 2 =4fy, the radius of the inner tube of the heat collector is r. a The angle between the reflected ray and the normal is called the position angle.

[0135] Step 1: Based on the structural parameters of the parabolic primary mirror and the tracking error angle α, determine the circle of tangency for the most divergent rays located at one edge corner of the parabolic primary mirror. The point of tangency is point A, and the intersection of the mirror surfaces is point O. At this point, the intersection of the parabolic primary mirror surfaces coincides with the center of the heat collection tube. The distance from point O to point A is OA. From the equation of the parabola, we have:

[0136]

[0137] In the formula, the height of the parabola is h; α is the tracking error angle; W a is the opening width of the parabolic primary mirror; f is the focal length of the parabolic primary mirror; when the edge angle When less than 90°,

[0138]

[0139] At the same time,

[0140]

[0141] In the formula, Let the edge angle of the parabolic primary reflector be defined as 0°, and the bottom position angle of the heat collection tube be defined as increasing counterclockwise. The maximum position angle is also called the edge angle of the parabolic primary reflector. We have:

[0142] Similarly, when For angles greater than or equal to 90°, the above formula still holds; RQ is a ray parallel to the principal axis, whose reflected ray OQ passes through the focal point, and its focal radius is OQ. At the edge, x0 = W a When the value is 2, OQ reaches its maximum value.

[0143]

[0144] Considering the existence of tracking errors and mirror shape processing errors, which cause light to defocus, the light divergence is most severe, that is, the maximum OA is corresponding to the edge of the parabola, and the maximum value is:

[0145]

[0146] ∠AOQ=90°-α,

[0147]

[0148] Step 2: Determine the distance OB from the intersection point B of the most diverging ray of the parabolic primary mirror and the other edge line to the intersection point O of the parabolic primary mirror surface. Since the cross-section of the circular arc secondary mirror is axisymmetric, based on OB and the edge angle... Calculate the width BD of the secondary mirror.

[0149]

[0150]

[0151] Step 3: Based on the positional relationship OO′ between the arc-shaped secondary reflector and the heat collection tube, calculate the relative position OC of the arc-shaped secondary reflector, where OC is the vertical distance from the top of the arc-shaped secondary reflector to the center of the heat collection tube, i.e., the relative position of the arc-shaped secondary reflector; r is the radius of the arc-shaped secondary reflector; let OC = b*r, and obtain OC = 0.9226r - 0.0343 by simulation fitting using optical software. The optical software can be TracePro, which approximates OC ≈ 0.9r, OO′ = r - OC ≈ 0.1r, i.e., OO′ = b1*r. To simplify the calculation, let OB = a. In ΔOBO′, by the cosine theorem, we have: Substituting the values: Solving for the given information, we get:

[0152]

[0153] In the formula, a is the length of OB; b1 is the coefficient between OO′ and radius r.

[0154] The position d of the secondary reflector is,

[0155]

[0156] In summary, a circular arc-shaped secondary reflector for a trough-type concentrating solar collector is a circular arc structure with point O′ located on the vertical line of the collector tube as the center, radius r, relative position d from the center of the collector tube, and width W.

[0157] The placement, radius, and width of the arc-shaped secondary reflector are simulated and fitted using geometric optics principles and optical software to ensure that the reflected light from the secondary reflector illuminates the heat collection tube to the maximum extent, thereby improving optical efficiency. Considering the case where the heat collection tube is vertically offset from the focal point of the parabolic primary reflector due to installation errors, corrected fitting parameters are provided to improve the accuracy of the design method.

[0158] When the central axis of the heat collection tube shifts upwards along the rod direction at the focal line of the parabolic primary reflector, when the shift amount... Unlike the above scheme, in step three, based on the positional relationship O1O′ between the focal points of the arc-shaped secondary reflector and the parabolic primary reflector, and the vertical offset l1 between the center O1 of the heat collection tube and the focal point of the parabolic primary reflector, the relative position O1C of the arc-shaped secondary reflector is calculated. Here, O1C is the vertical distance from the top of the secondary reflector to the center O1 of the heat collection tube, i.e., the relative position of the secondary reflector. Let O1C = b*r, where b is the coefficient between OC and radius r, with a recommended coefficient of 0.92 to 0.96. OO′ = r - OC = r - O1C - OO1, i.e., OO′ = b1*r - l1, where OO1 is the upward offset l1 along the rod direction between the center O1 of the heat collection tube and the focal point of the parabolic primary reflector. By the cosine theorem:

[0159]

[0160]

[0161] The position d of the secondary reflector is,

[0162]

[0163] When the central axis of the heat collection tube is offset vertically downwards from the focal line of the parabolic primary reflector, when the offset amount Unlike the above scheme, in step three, the relative position O2C of the arc-shaped secondary reflector is calculated based on the positional relationship O2O′ between the focal points of the arc-shaped secondary reflector and the parabolic primary reflector, and the vertical offset l2 between the center O2 of the heat collection tube and the focal point of the parabolic primary reflector.

[0164] Where O2C is the vertical distance from the top of the secondary reflector to the center O2 of the heat collection tube, i.e., the relative position of the secondary reflector. Let O2C = b*r, where b is the coefficient of OC and radius r. It is recommended that the coefficient b be 0.92 to 0.99. OO′ = r - OC = r - O2C + OO2, i.e., OO′ = b1*r + l2, ​​where OO2 is the vertical downward offset l2 between the center O2 of the heat collection tube and the focal point of the parabolic primary reflector. By the cosine theorem:

[0165]

[0166]

[0167] The position d of the secondary reflector is,

[0168]

[0169] It should be noted that, in combination Figure 14 As shown, in specific implementation methods three and four, only the vertical offset of the heat collection tube is considered. This is because: 1. Combining Figure 14 a. When the trough solar collector is in a vertical position, it is common for the collector tubes to shift in the vertical direction, for example, due to gravity, material expansion, or external mechanical vibration; 2. Combined with Figure 14 b. When the trough solar collector performs single-axis tracking of the sun, it is in an inclined state. At this time, the offset corresponding to the above calculation method is along the rod direction. It can be decomposed into horizontal and vertical offsets, so that both horizontal and vertical offsets can be considered.

[0170] Taking the downward displacement along the rod direction of a tilted trough solar collector as an example, as shown in the figure: Firstly, when the trough solar collector is tilted, the collector tubes are fixed by the rod, and if a certain displacement occurs, slippage along the rod direction is more likely to occur. To comprehensively consider the horizontal and vertical displacement of the collector tubes, the total displacement can be decomposed, such as... Figure 14 As shown,

[0171] OM = OO2cos∠MOO2

[0172] ON = OO2cos∠NOO2

[0173] Where ∠MOO2 is the angle between the rod and the horizontal direction; ∠NOO2 is the angle between the rod and the vertical direction; for scenarios where the horizontal offset is easy to measure, ∠MOO2 can be used. Right now Where x is the horizontal offset of the heat collection tube; θ1 is the angle between the rod and the horizontal direction. Let O2C = b*r, where b is the coefficient of OC and radius r. It is recommended that the coefficient b be 0.92 to 0.99. OO′ = r - OC = r - O2C + OO2, that is, OO′ = b1*r + l2, ​​where OO2 is the vertical downward offset l2 between the center O2 of the heat collection tube and the focal point of the parabolic primary reflector. Given the horizontal offset, l2 can be deduced. Then, by the cosine theorem, we have: Substitution have:

[0174]

[0175] The position d of the secondary reflector is,

[0176]

[0177] For scenarios where vertical offset is easy to measure, the following method can be used: Right now Where y is the vertical offset of the heat collection tube; θ2 is the angle between the rod and the vertical direction; let O2C = b*r; where b is the coefficient of OC and radius r, the recommended coefficient b is 0.92~0.99, OO′ = r - OC = r - O2C + OO2, that is OO′ = b1*r + l2, ​​where OO2 is the vertical downward offset l2 between the center O2 of the heat collection tube and the focal point of the parabolic primary reflector. Given the vertical offset, l2 can be deduced, and then by the cosine theorem, we have:

[0178] Substitution have:

[0179]

[0180] The position d of the secondary reflector is,

[0181]

[0182] Regarding the size and location of the frequency divider: Considering the optical characteristics of the frequency divider itself (short-wave reflection, long-wave transmission), its obstruction of incident light should be minimized, allowing light to enter from the bottom as much as possible. This satisfies the condition that long-wave transmission is absorbed by the collector tubes, and short-wave reflection is received by the photovoltaic panel. Considering material savings and the optical characteristics of the frequency divider, to ensure that the trough collector can receive and reflect the entire solar spectrum before frequency division, the size of the frequency divider should be set so that it intersects the line connecting the edge point and the focal point of the trough collector. Figure 3 As shown, the farther away from the solar collector tube, the more material is needed, and the closer to the tube, the less material is needed. Considering that in reality, the frequency divider cannot achieve perfect short-wave reflection and long-wave transmission of sunlight, there will always be some absorption of light and heat generation. This heat generation will have a negative impact on the photovoltaic panel and reduce its power generation efficiency. However, the heat generation has certain advantages for the solar collector tube itself. In summary, the frequency divider should be arranged at a position perpendicular to and tangent to the edge point of the central axis of the solar collector tube. The specific shape should be a parabola that satisfies the equation of reflection through the same focal point after light concentration.

[0183] Regarding the size and location settings of the photovoltaic panels: Based on the simulation of TracePro software, a large amount of light is incident, and then the reflection band of the frequency divider is set. It can be observed that the light will be concentrated after the second reflection of the frequency divider. The main concentration position is the light band formed directly below the frequency divider, and the area is slightly wider than the frequency divider. This conforms to the optical condition that the size of the photovoltaic panel and the frequency divider are proportional.

[0184] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A control method for a solar-powered full-spectrum frequency-division thermo-electric combined drive air conditioning system, characterized in that: The air conditioning system includes a trough collector (1), a photovoltaic panel (2), a frequency converter (3), a collector tube (4), an oil tank (5), an oil circulation pump (6), a generator (7), an energy storage converter (8), a first ejector (9), a compressor (10), a condenser (11), a liquid receiver (12), a throttle valve (13), an evaporator (14), a refrigerant circulation pump (15), a first regulating valve (30), a second regulating valve (31), a third regulating valve (32), and a fourth regulating valve (33). The oil outlet of the heat collection tube (4) is connected to the oil inlet of the oil tank (5), the oil outlet of the oil tank (5) is connected to the oil inlet of the oil circulation pump (6), the oil outlet of the oil circulation pump (6) is connected to the oil inlet of the generator (7), and the oil outlet of the generator (7) is connected to the oil inlet of the heat collection tube (4). The outlet of the generator (7) is connected to the high-pressure inlet of the first injector (9). A first regulating valve (30) is provided on the low-pressure inlet pipe of the first injector (9). The outlet of the evaporator (14) is connected to the inlet of the compressor (10). A third regulating valve (32) is provided on the outlet pipe of the evaporator (14). The outlet of the compressor (10) is connected to the low-pressure inlet of the first injector (9) and a pipe for merging with the outlet of the first injector (9). A first regulating valve (32) is provided on the outlet pipe of the first injector (9). There is a second regulating valve (31). The liquid outlet branch pipe of the compressor (10) merges with the liquid outlet of the first ejector (9) and is connected to the liquid inlet of the condenser (11). The liquid outlet of the condenser (11) is connected to the liquid inlet of the liquid storage tank (12). The liquid outlet of the liquid storage tank (12) is connected to the liquid inlet of the throttle valve (13) and the liquid inlet of the refrigerant circulation pump (15). The liquid outlet of the throttle valve (13) is connected to the liquid inlet of the evaporator (14). The liquid outlet of the refrigerant circulation pump (15) is connected to the liquid inlet of the generator (7). The evaporator (14) is also provided with a liquid inlet and a liquid outlet on the other side, and the condenser (11) is also provided with a liquid inlet and a liquid outlet on the other side. The number of trough collectors (1) is at least one. When the number of trough collectors (1) is at least two, the trough collectors (1) are evenly distributed. Each trough collector (1) is equipped with a heat collection tube (4). Multiple heat collection tubes (4) are connected in series. At least one trough collector (1) is connected to a photovoltaic panel (2). The photovoltaic panel (2) is connected to an energy storage converter (8). The energy storage converter (8) is connected to a compressor (10), an oil circulation pump (6), and a refrigerant circulation pump (15). It also includes a second injector (17), a gas-liquid separator (18), a fifth regulating valve (34), a sixth regulating valve (35), a seventh regulating valve (36), an eighth regulating valve (37), a ninth regulating valve (38), a tenth regulating valve (39), an eleventh regulating valve (40), a twelfth regulating valve (41), a fifth refrigerant line (84), a fourth ejector refrigerant line (88), a fifth ejector refrigerant line (89), a fifth working refrigerant line (90), a fifth gaseous refrigerant line (91), a third mixed refrigerant line (93), a fourth mixed refrigerant line (94), and a third liquid refrigerant line (96). The liquid outlet of the evaporator (14) is connected to the low-pressure liquid inlet of the second ejector (17) and the liquid inlet of the fifth refrigerant line (84), respectively. The low-pressure liquid inlet of the second ejector (17) is equipped with a seventh regulating valve (36), and the high-pressure liquid inlet of the second ejector (17) is equipped with a twelfth regulating valve (41). The liquid outlet of the second ejector (17) is connected to the liquid inlet of the gas-liquid separator (18), and the gas outlet of the gas-liquid separator (18) is connected to the gas inlet of the fourth ejector refrigerant line (88). The fourth ejector refrigerant line (88) is equipped with a sixth regulating valve (35). The outlet of the fourth ejector refrigerant line (88) and the outlet of the fifth ejector refrigerant line (89) merge and are connected to the inlet of the first ejector (9). The outlet of the fifth gaseous refrigerant line (91) is connected to the inlet of the fifth ejector refrigerant line (89) and the inlet of the fifth working refrigerant line (90). The outlet of the fifth working refrigerant line (90) and the outlet of the generator (7) merge and are connected to the high-pressure inlet of the first ejector (9). The fifth working refrigerant line (90) is equipped with a fifth regulating valve (34). The first ejector (9) The outlet of the gas-liquid separator (18) is connected to the inlet of the third mixed refrigerant line (93). The outlet of the third mixed refrigerant line (93) is connected to the inlet of the fourth mixed refrigerant line (94) and the inlet of the first mixed refrigerant line (65). The fourth mixed refrigerant line (94) is equipped with an eighth regulating valve (37). The outlet of the fourth mixed refrigerant line (94) and the outlet of the fifth refrigerant line (84) merge and are connected to the inlet of the compressor (10). The outlet of the gas-liquid separator (18) is connected to the inlet of the third liquid refrigerant line (96). A ninth regulating valve (38) is provided on the liquid refrigerant pipeline (96). The outlet of the third liquid refrigerant pipeline (96) is connected to the inlet of the throttle valve (13) and the outlet of one side of the liquid storage tank (12). A tenth regulating valve (39) is provided on the outlet pipeline of one side of the liquid storage tank (12). The outlet of the condenser (11) is connected to the inlet of the liquid storage tank (12) and the inlet of the second ejector (17). An eleventh regulating valve (40) is provided on the inlet pipeline of the liquid storage tank (12). During the daytime, open the first regulating valve (30), the second regulating valve (31), the third regulating valve (32), the tenth regulating valve (39) and the eleventh regulating valve (40), and close the fourth regulating valve (33), the fifth regulating valve (34), the sixth regulating valve (35), the seventh regulating valve (36), the eighth regulating valve (37), the ninth regulating valve (38) and the twelfth regulating valve (41) to run the jet refrigeration cycle with compressor (10); The trough collector (1) concentrates sunlight and reflects it to the frequency divider (3). After the frequency divider (3) divides the frequency, the short wave reflection acts on the photovoltaic panel (2) to generate electricity, which is then stored in the energy storage converter (8) for DC-AC conversion for nighttime use. The electricity in the energy storage converter (8) directly drives the oil circulation pump (6), the refrigerant circulation pump (15), and the compressor (10). The long wave transmission acts on the collector tube (4) to heat the heat transfer oil. The heat acts on the generator (7) as the driving heat source for jet refrigeration. At the same time, the cooling water is used as a low-temperature heat source. The compressor (10) acts as an auxiliary device for jet refrigeration to pressurize the ejector fluid and drive the jet-compression refrigeration cycle to ensure the refrigeration conditions with high cooling load demand during the day. At night, open the third regulating valve (32), the fourth regulating valve (33), the tenth regulating valve (39) and the eleventh regulating valve (40), and close the first regulating valve (30), the second regulating valve (31), the fifth regulating valve (34), the sixth regulating valve (35), the seventh regulating valve (36), the eighth regulating valve (37), the ninth regulating valve (38) and the twelfth regulating valve (41) to run a single compression refrigeration cycle; At night, the stored electrical energy in the energy storage converter (8) is used as the power source for the compressor (10) to directly drive the compression refrigeration cycle and ensure the refrigeration operation at night; When operating in dual-jet-compression refrigeration mode Open the fourth regulating valve (33), the fifth regulating valve (34), the sixth regulating valve (35), the seventh regulating valve (36), the eighth regulating valve (37), the ninth regulating valve (38) and the twelfth regulating valve (41), and close the first regulating valve (30), the second regulating valve (31), the third regulating valve (32), the tenth regulating valve (39) and the eleventh regulating valve (40) to run a low compression ratio compression refrigeration cycle with the first ejector (9) and the second ejector (17); The electrical energy stored in the energy storage converter (8) is used as the power source for the compressor (10) to drive the jet-compression composite refrigeration. The second ejector (17) serves as an auxiliary device for the compression refrigeration. The first ejector (9) is driven by the high pressure on the condenser side to increase the pressure at the inlet of the compressor (10).

2. The control method for the solar full-spectrum frequency-division thermo-electric combined drive air conditioning system according to claim 1, characterized in that: The oil tank (5) is a heat storage tank (16).

3. The control method for the solar full-spectrum frequency-division thermo-electric combined drive air conditioning system according to claim 1 or 2, characterized in that: The trough-type solar collector (1) includes an arc-shaped secondary reflector, a parabolic primary reflector, and a solar collector tube. The central axis of the solar collector tube coincides with the focal line of the parabolic primary reflector. The cross-sections of the parabolic primary reflector and the arc-shaped secondary reflector are both arc-shaped. The arc-shaped secondary reflector is located above the solar collector tube, and the openings of the parabolic primary reflector and the arc-shaped secondary reflector are arranged opposite to each other. The radius r of the arc-shaped secondary reflector is... In the formula, a is the length of OB; b1 is The coefficient with radius r, where The center of the arc-shaped secondary reflector; The edge angle of a parabolic primary reflector; The width W of the arc-shaped secondary reflector is... In the formula, α is the tracking error angle; OB is the distance from the intersection point B of the most divergent ray of the parabolic primary mirror and the edge line of the other side of the arc-shaped secondary mirror to the focal point O of the parabolic primary mirror. The position d of the arc-shaped secondary reflector is... The arc-shaped secondary reflector is positioned on the vertical line of the heat collection tube. A circular arc structure with point as center, radius r, relative distance d from the center of the heat collection tube, and width W.

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