A lunar base power generation system based on hydrogen-oxygen hypergolic cycle and a method of using the same

Abstract

The application provides a lunar base power generation system based on a hydrogen-oxygen afterburning cycle and a use method thereof, and belongs to the technical field of lunar power generation. The problems of unstable photovoltaic power generation caused by low temperature during lunar night, low energy storage density, high maintenance cost and difficulty in meeting the demand for continuous and efficient energy supply of existing heat storage technology are solved. The power generation system comprises a cycle system, a hydrogen-oxygen combustion chamber, an electrolysis device, a liquid hydrogen tank, a liquid oxygen tank and a liquid water tank. The cycle system comprises a solar heat collector, a power generation turbine, a radiator and a gas compressor which are sequentially connected in a closed loop. A working medium circulates in the cycle system. The hydrogen-oxygen combustion chamber is connected between the solar heat collector and the power generation turbine. The power generation turbine is connected with the electrolysis device. The power generation system can provide three operation modes, namely, a lunar day power generation hydrogen-oxygen production mode, a lunar day afterburning efficiency increasing mode and a lunar night combustion power generation mode. The power generation system is mainly used for lunar base power generation.

Description

Technical Field

[0001] This invention belongs to the field of lunar power generation technology, and in particular relates to a lunar base power generation system based on a hydrogen-oxygen afterburning cycle and its usage method. Background Technology

[0002] The Moon serves as a crucial transit point for deep space exploration and represents humanity's first step in developing space; its importance is self-evident. An energy system is a prerequisite for lunar development. Currently, photovoltaic power generation technology is widely used, and in space environments (such as space stations), continuous energy supply can be achieved by adjusting the angle of photovoltaic panels. However, on the lunar surface, the extremely low temperatures (90K) during the lunar night cause control instruments to malfunction, making it difficult for photovoltaic systems to operate stably for extended periods. Therefore, meeting the demand for continuous and efficient energy supply is key to future lunar bases.

[0003] Due to the radiation and leakage issues of nuclear reactors, the utilization of lunar solar energy is increasingly favored. In the process of utilizing solar energy, a thermal storage system must be introduced to address the problem of fluctuating solar energy levels. Using sintered lunar regolith for in-situ thermal storage is currently the consensus; however, this sensible heat storage method has limited heat storage capacity, and its excessive weight also inhibits the high-power output of the energy system. Transporting thermal storage materials from Earth, such as paraffin wax, has a higher energy density than lunar regolith, but the lunar surface experiences diurnal temperature variations exceeding 300°C. Paraffin wax is prone to melting and leakage under high daytime temperatures and solidification and shrinkage under low nighttime temperatures, leading to cracks in the sealing structure and requiring frequent maintenance. Furthermore, the cost of transporting each kilogram of paraffin wax from Earth to the Moon is enormous, and large-scale use would skyrocket mission costs, making it uneconomical. While chemical thermal storage theoretically has an energy density 5-10 times that of sensible thermal storage, current terrestrial applications, such as metal hydride thermal storage and ammonia decomposition thermal storage, still face problems such as low reaction efficiency and easy catalyst deactivation. In the vacuum and intense radiation environment of the lunar surface, the stability of chemical reactions is more difficult to control, and the reaction products may corrode base equipment. Furthermore, the technological maturity is far from meeting the needs of lunar applications. Therefore, there is an urgent need to find a new energy storage method to break through the operational limitations of solar thermal power cycles. Summary of the Invention

[0004] In view of this, the present invention aims to propose a lunar base power generation system based on a hydrogen-oxygen combustion cycle and its usage method, in order to solve the problems of unstable photovoltaic power generation caused by the low temperature of the lunar night, as well as the low energy storage density, high maintenance cost, and inability to meet the continuous and efficient energy supply requirements of existing thermal storage technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lunar base power generation system based on a hydrogen-oxygen combustion cycle, characterized in that: it includes a circulation system, a hydrogen-oxygen combustion chamber, an electrolysis device, a liquid hydrogen tank, a liquid oxygen tank, and a liquid water tank; the circulation system includes a solar collector, a power generation turbine, a radiator, and a compressor connected in a closed loop in sequence; a circulating working fluid flows within the circulation system; a hydrogen-oxygen combustion chamber is connected between the solar collector and the power generation turbine; a first valve and a second valve are provided on both sides of the hydrogen-oxygen combustion chamber; a third valve is connected in parallel to both sides of the solar collector and the first valve via pipelines; the hydrogen-oxygen combustion chamber and... The second valve has a fourth valve connected in parallel to its two ends via pipelines. The generator turbine is connected to the electrolysis equipment. The radiator is connected to both the electrolysis equipment and the liquid water tank. The liquid water tank is connected to the electrolysis equipment. A fifth valve is installed between the radiator and the liquid water tank. A sixth valve is installed between the radiator and the compressor. The sixth valve is connected to the heat exchanger via heat exchange pipelines. A seventh valve is installed on the heat exchange pipelines. The liquid hydrogen tank and liquid oxygen tank are located within the crater area. The inlets of the liquid hydrogen tank and liquid oxygen tank are connected to the electrolysis equipment. The outlets of the liquid hydrogen tank and liquid oxygen tank are connected to the hydrogen-oxygen combustion chamber via pipelines passing through the heat exchanger.

[0006] Furthermore, the cyclic system employs a closed Brayton cycle.

[0007] Furthermore, the circulating working fluid is based on a helium-xenon mixture.

[0008] Furthermore, the heat exchanger is a three-fluid heat exchanger.

[0009] Furthermore, the heat exchanger employs a microchannel structure.

[0010] Furthermore, the radiator incorporates a gas-liquid separator.

[0011] Furthermore, the minimum temperature of the radiator is set to be 5K different from the freezing point of water.

[0012] This invention also provides a method for using a lunar base power generation system based on a hydrogen-oxygen afterburning cycle, when the solar radiation intensity is 1000 W / m². 2 When the temperature is above a certain level, the lunar daytime power generation and hydrogen / oxygen production mode will be activated.

[0013] Open the first, fourth, and sixth valves, and close the second, third, fifth, and seventh valves. The solar collector absorbs heat, heats the circulating working fluid, and the circulating working fluid drives the power generation turbine to expand and generate electricity. The circulating working fluid is cooled by the radiator, pressurized by the compressor, and then enters the solar collector to continue absorbing heat. The water in the liquid water tank enters the electrolysis equipment. Part of the electrical energy output by the power generation turbine is sent to the electrolysis equipment. The electrolysis equipment electrolyzes water to produce hydrogen and oxygen. The produced hydrogen and oxygen are sent to the liquid hydrogen tank and liquid oxygen tank for liquefaction and storage, respectively.

[0014] This invention also provides a method for using a lunar base power generation system based on a hydrogen-oxygen afterburning cycle, when the solar radiation intensity is below 1000 W / m². 2 At that time, the lunar day supplementary combustion efficiency enhancement mode is activated;

[0015] Open the first, second, fifth, and seventh valves, and close the third, fourth, and sixth valves. The solar collector absorbs heat, and the liquid hydrogen and liquid oxygen in the liquid hydrogen and liquid oxygen tanks are heated into a gaseous state through the heat exchanger. The hydrogen and oxygen are sent into the hydrogen-oxygen combustion chamber to mix and burn, increasing the temperature of the circulating working fluid. The circulating working fluid drives the power generation turbine to expand and generate electricity. The circulating working fluid is cooled by the radiator, where the water vapor condenses into liquid water. The liquid water enters the electrolysis equipment or liquid water tank. Then, the circulating working fluid enters the heat exchanger to release heat and cool down. After being pressurized by the compressor, it enters the solar collector to continue absorbing heat.

[0016] The present invention also provides a method for using a lunar base power generation system based on a hydrogen-oxygen supplementary combustion cycle, which operates in lunar night combustion power generation mode during lunar night or extreme lack of light.

[0017] The second, third, fifth, and seventh valves are opened, while the first, fourth, and sixth valves are closed. The working fluid is heated by the hydrogen-oxygen combustion chamber. The liquid hydrogen and liquid oxygen in the liquid hydrogen and liquid oxygen tanks are heated into a gaseous state through the heat exchanger. The hydrogen and oxygen are sent into the hydrogen-oxygen combustion chamber to mix and burn. The heated working fluid drives the generator turbine to expand and generate electricity. The working fluid is cooled by the radiator, where the water vapor condenses into liquid water. The liquid water enters the liquid water tank. Then, the working fluid enters the heat exchanger to release heat and cool down. After being pressurized by the compressor, it re-enters the hydrogen-oxygen combustion chamber.

[0018] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention addresses the problems of unstable photovoltaic power generation at lunar bases due to low lunar night temperatures, and the low energy density, high maintenance costs, and inability to meet the continuous and efficient energy supply demands of existing thermal storage technologies. It proposes a lunar base power generation system based on a hydrogen-oxygen combustion cycle and its application method. This system introduces a hydrogen-oxygen combustion chamber, utilizing the high-temperature heat released from hydrogen-oxygen combustion to raise the temperature of the circulating working fluid during periods of insufficient solar radiation or lunar night, significantly enhancing the turbine's work capacity and breaking through the operational boundaries of traditional thermodynamic cycles. Compared to sensible heat storage methods, this method avoids the introduction of a thermal storage system, improves the system's power-to-weight ratio, reduces the Earth-Moon transport pressure, and solves the problems of excessive weight of thermal storage materials inhibiting high-power output of the energy system and the enormous cost of transporting thermal storage materials from Earth.

[0019] Meanwhile, the system employs a closed-loop Brayton cycle with a helium-xenon mixture as the working fluid, combined with a three-fluid microchannel heat exchanger, achieving efficient energy conversion and thermal management. The radiator incorporates a gas-liquid separator to separate the helium-xenon mixture from water, and maintains a minimum temperature difference of 5K from the water freezing point, ensuring stable operation under the lunar surface vacuum and intense radiation environment. Through flexible switching between three modes—lunar daytime power generation to produce hydrogen and oxygen, lunar daytime supplemental combustion for efficiency enhancement, and lunar nighttime combustion for power generation—the system can adapt to the long lunar day-night cycle and extreme temperature differences, achieving continuous and efficient energy supply and providing reliable energy security for the lunar base. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of a lunar base power generation system based on a hydrogen-oxygen afterburning cycle, as described in this invention.

[0022] Figure 2 This is a schematic diagram of the lunar daytime power generation and hydrogen / oxygen production mode described in this invention.

[0023] Figure 3 This is a schematic diagram of the operation of the lunar daytime supplementary combustion efficiency enhancement mode described in this invention;

[0024] Figure 4 This is a schematic diagram of the moonlit combustion power generation mode described in this invention.

[0025] In the picture:

[0026] 1-Solar collector, 2-Hydrogen-oxygen combustion chamber, 3-Power generation turbine, 4-Radiator, 5-Heat exchanger, 6-Compressor, 7-Electrolysis equipment, 8-Crater area, 9-Liquid hydrogen tank, 10-Liquid oxygen tank, 11-Liquid water tank, 12-First valve, 13-Second valve, 14-Third valve, 15-Fourth valve, 16-Fifth valve, 17-Sixth valve, 18-Seventh valve. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0028] See Figure 1-4 This embodiment describes a lunar base power generation system based on a hydrogen-oxygen afterburning cycle. Its features include a circulation system, a hydrogen-oxygen combustion chamber 2, an electrolysis device 7, a liquid hydrogen tank 9, a liquid oxygen tank 10, and a liquid water tank 11. The circulation system comprises a solar collector 1, a power generation turbine 3, a radiator 4, and a compressor 6 connected in a closed loop. A circulating working fluid flows within the circulation system. The hydrogen-oxygen combustion chamber 2 connects the solar collector 1 and the power generation turbine 3. The introduction of the hydrogen-oxygen combustion chamber 2 compensates for the heat deficit caused by insufficient solar radiation, significantly increasing the inlet temperature of the power generation turbine 3 and enhancing its work-capacity. It breaks through the traditional thermodynamic work-capacity limits by utilizing chemical energy. Furthermore, using chemical combustion as the core energy source during the lunar night avoids the transportation burden of a large thermal storage system and significantly improves the system's power-to-weight ratio. A first valve 12 and a second valve 13 are provided on both sides of the hydrogen-oxygen combustion chamber 2. A third valve 14 is connected in parallel to both sides of the solar collector 1 and the first valve 12 via pipelines. A fourth valve 15 is connected in parallel to both ends of the hydrogen-oxygen combustion chamber 2 and the second valve 13 via pipelines. The power generation turbine 3 is connected to the electrolysis equipment 7. The radiator 4 is connected to the electrolysis equipment 7 and the liquid water tank 11 respectively. The liquid water tank 11 is connected to the electrolysis equipment 7. A fifth valve 1 is provided between the radiator 4 and the liquid water tank 11. 6. A sixth valve 17 is provided between the radiator 4 and the compressor 6. The two ends of the sixth valve 17 are connected to the heat exchanger 5 through heat exchange pipelines. A seventh valve 18 is provided on the heat exchange pipelines. The temperature of the crater area 8 is 30-40K all year round, forming a natural cold storage. The liquid hydrogen tank 9 and liquid oxygen tank 10 are located in the crater area 8. The inlets of the liquid hydrogen tank 9 and liquid oxygen tank 10 are connected to the electrolysis equipment 7. The outlets of the liquid hydrogen tank 9 and liquid oxygen tank 10 are connected to the hydrogen-oxygen combustion chamber 2 through pipelines passing through the heat exchanger 5.

[0029] The core of the circulation system is a closed Brayton cycle, and the circulating working fluid is a helium-xenon mixture. During operation of the hydrogen-oxygen combustion chamber 2, the outlet of the chamber is a three-way gas mixture. The products of hydrogen and oxygen combustion are mixed with the helium-xenon mixture, which consists of helium, xenon, and water vapor. After the water vapor is removed by the radiator 4, the circulating working fluid remains a helium-xenon mixture. The radiator 4 has a built-in gas-liquid separator that separates the helium-xenon mixture from water, allowing the mixture to flow back into the circulation system. The minimum temperature of the radiator 4 is set 5K below the freezing point of water. The heat exchanger 5 is a three-fluid heat exchanger, including liquid hydrogen evaporation, liquid oxygen evaporation, and cooling of the system's circulating working fluid. The heat exchanger 5 employs a microchannel structure.

[0030] This embodiment describes the use of a lunar base power generation system based on a hydrogen-oxygen supplementary combustion cycle. When in use, the power generation system can provide three operating modes: lunar daytime power generation and hydrogen-oxygen production mode, lunar daytime supplementary combustion efficiency enhancement mode, and lunar nighttime combustion power generation mode.

[0031] During lunar daylight hours, when solar radiation intensity is high (e.g., lunar noon), it can reach 1000 W / m². 2 At or above, it operates in lunar daytime power generation and hydrogen / oxygen production mode.

[0032] By opening valves 12, 15, and 17, and closing valves 13, 14, 16, and 18, the solar collector 1 absorbs a large amount of heat, heating the circulating working fluid. This increases the temperature of the working fluid before the power generation turbine 3 to over 1000K, significantly increasing its enthalpy and achieving high power output. The circulating working fluid drives the power generation turbine 3 to expand and generate electricity, significantly enhancing its work-generating capacity. The working fluid after the power generation turbine 3 has completed its work is a low-temperature, low-pressure gas. It is cooled by radiator 4, lowering the system's working fluid temperature. After being pressurized by compressor 6, it enters the solar collector 1 to continue absorbing heat, becoming a high-temperature, high-pressure fluid, thus achieving efficient circulation and energy recovery. During the lunar daytime hydrogen-oxygen production mode, the power generation efficiency remains between 35% and 42%.

[0033] Water in liquid water tank 11 enters electrolysis device 7. Part of the electrical energy output from generator turbine 3 is sent to electrolysis device 7. Electrolysis device 7 electrolyzes water to produce hydrogen and oxygen. The produced hydrogen and oxygen are sent to liquid hydrogen tank 9 and liquid oxygen tank 10 located in crater region 8 for liquefaction and storage to reduce evaporation and storage losses, in preparation for subsequent lunar day supplementary combustion efficiency enhancement mode or lunar night combustion power generation mode.

[0034] This mode can also be switched to a partial hydrogen production mode, dynamically adjusting the power allocation ratio according to the actual power demand and energy storage demand of the base, so as to achieve the optimal dual objectives of "power generation-hydrogen production".

[0035] As the lunar day progresses into the early morning and evening, solar radiation weakens, with its intensity dropping below 1000 W / m². 2 When the output temperature of solar collector 1 is difficult to maintain at a high enthalpy state, the system automatically switches to the lunar day supplementary combustion efficiency enhancement mode.

[0036] In addition to continuing to absorb heat from the solar collector 1, part of the circulating working fluid is introduced into the hydrogen-oxygen combustion chamber 2. The hydrogen-oxygen combustion chamber 2 introduces pre-stored hydrogen and oxygen and uses the combustion reaction 2H2 + O2 → 2H2O with a calorific value of 142MJ / kg to further heat the circulating working fluid. This can usually increase the temperature of the circulating working fluid by more than 200K compared to the output of the solar collector alone, thus compensating for the required enthalpy difference.

[0037] Open the first valve 12, the second valve 13, the fifth valve 16, and the seventh valve 18, and close the third valve 14, the fourth valve 15, and the sixth valve 17. The solar collector 1 absorbs some heat. The temperature of the circulating working fluid before the power generation turbine 3 is relatively low. The hydrogen-oxygen combustion chamber 2 is increased. The liquid hydrogen and liquid oxygen in the liquid hydrogen tank 9 and the liquid oxygen tank 10 are heated into a gaseous state through the heat exchanger 5. The hydrogen and oxygen are sent into the hydrogen-oxygen combustion chamber 2 to mix and burn. Through the high-temperature mixing of hydrogen and oxygen, the temperature of the circulating working fluid increases sharply, which enhances the power generation turbine 3's work capacity, reaching or even exceeding the power generation turbine 3's work capacity under high solar radiation intensity. The circulating working fluid, which has been supplemented and heated, drives the power generation turbine 3 to expand and generate electricity. After the low-temperature, low-pressure exhaust gas is discharged, the circulating working fluid is cooled by radiator 4, where water vapor condenses into liquid water. This liquid water then enters electrolysis unit 7 to produce hydrogen and oxygen, forming a sustainable cycle with highly coupled matter and energy. Alternatively, it can be stored in liquid water tank 11, where the liquefied water is repeatedly used in subsequent electrolysis, improving the closed-loop utilization efficiency of materials. The circulating working fluid then enters heat exchanger 5 to release heat and cool down, improving the overall system thermal efficiency. Liquid hydrogen and liquid oxygen evaporate into gaseous states and then enter the hydrogen-oxygen combustion chamber 2 for combustion. Hydrogen and oxygen can be continuously supplied through the meteorite crater storage tank, ensuring the system's sustainable operation. The further cooled circulating working fluid is pressurized by compressor 6, significantly reducing the power consumption of compressor 6, and then enters solar collector 1 to continue absorbing heat.

[0038] This mode can significantly improve the total power generation capacity when the output of solar collector 1 is insufficient, making the day and night power generation curve of the entire system more stable, and meeting the flexible switching between energy storage and energy consumption.

[0039] During moonlit nights or periods of extreme light deficiency, when there is no solar radiation, the system operates in moonlit combustion power generation mode. Solar collector 1 ceases operation, and the system relies entirely on previously prepared and stored hydrogen and oxygen to release heat energy through high-temperature combustion in hydrogen-oxygen combustion chamber 2. Hydrogen-oxygen combustion chamber 2 becomes the heat source. The two high-purity gases are stoichiometrically mixed and enter hydrogen-oxygen combustion chamber 2 for vigorous combustion, directly raising the temperature of the circulating working fluid to 1000K or even higher. In this case, the system relies entirely on hydrogen-oxygen combustion chamber 2 as the heat output end.

[0040] The second valve 13, third valve 14, fifth valve 16, and seventh valve 18 are opened, while the first valve 12, fourth valve 15, and sixth valve 17 are closed. The working fluid is heated by the hydrogen-oxygen combustion chamber 2. Liquid hydrogen and liquid oxygen in liquid hydrogen tank 9 and liquid oxygen tank 10 are heated and become gaseous through heat exchanger 5. The hydrogen and oxygen are then fed into the hydrogen-oxygen combustion chamber 2 for combustion. The heated working fluid drives the generator turbine 3 to expand and generate electricity. The working fluid radiates heat into deep space through radiator 4, using deep space as a heat sink for cooling. Water vapor condenses into liquid water, which enters the liquid water tank 11 for later use. The working fluid then enters heat exchanger 5 to release heat and cool down. Utilizing the heat exchanger 5, the working fluid transfers heat to the liquid hydrogen and liquid oxygen, completing a phase change and achieving partial heat and work recovery. After two cooling cycles, the working fluid is pressurized by compressor 6 and then re-enters the hydrogen-oxygen combustion chamber 2. By cooperating with the heat exchanger 5 and the compressor 6, the temperature and pressure of the working fluid are restored to the initial state of the cycle, ensuring the closed-loop efficient operation of the hydrogen-oxygen combustion cycle and ensuring the continuation of energy during the lunar night.

[0041] Under these operating conditions, the base can achieve uninterrupted energy supply for one lunar night (approximately 14 Earth days); by rationally adjusting the power distribution of equipment for power generation, living, thermal control, water production, and oxygen production, the system can ensure energy self-sufficiency throughout the entire lunar night.

[0042] By flexibly switching between the above three modes, this invention effectively adapts to the long lunar day-night cycle and extreme temperature difference environment, greatly improving the safety, stability and power generation efficiency of the base's energy system, and providing continuous power and clean energy for long-term human settlement and industrial activities on the moon.

[0043] The specific embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific embodiments described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A method for using a lunar base power generation system based on a hydrogen-oxygen afterburning cycle, characterized in that: The lunar base power generation system based on hydrogen-oxygen combustion cycle includes a circulation system, a hydrogen-oxygen combustion chamber (2), an electrolysis device (7), a liquid hydrogen tank (9), a liquid oxygen tank (10), and a liquid water tank (11). The circulation system includes a solar collector (1), a power generation turbine (3), a radiator (4), and a compressor (6) connected in a closed loop. The circulation system is filled with a circulating working fluid. The hydrogen-oxygen combustion chamber (2) is connected between the solar collector (1) and the power generation turbine (3). A first valve (12) and a second valve (13) are provided on both sides of the hydrogen-oxygen combustion chamber (2). A third valve (14) is connected in parallel to both sides of the solar collector (1) and the first valve (12) through a pipeline. A fourth valve (15) is connected in parallel to both ends of the hydrogen-oxygen combustion chamber (2) and the second valve (13) through a pipeline. The electric turbine (3) is connected to the electrolysis equipment (7). The radiator (4) is connected to the electrolysis equipment (7) and the liquid water tank (11) respectively. The liquid water tank (11) is connected to the electrolysis equipment (7). A fifth valve (16) is provided between the radiator (4) and the liquid water tank (11). A sixth valve (17) is provided between the radiator (4) and the compressor (6). The six valve (17) is connected to the heat exchanger (5) through heat exchange pipelines. A seventh valve (18) is provided on the heat exchange pipelines. The liquid hydrogen tank (9) and the liquid oxygen tank (10) are located in the crater area (8). The inlets of the liquid hydrogen tank (9) and the liquid oxygen tank (10) are connected to the electrolysis equipment (7). The outlets of the liquid hydrogen tank (9) and the liquid oxygen tank (10) are connected to the hydrogen-oxygen combustion chamber (2) through pipelines passing through the heat exchanger (5). When the solar radiation intensity is 1000W / m 2 When the temperature is above a certain level, the lunar daytime power generation and hydrogen / oxygen production mode will be activated. Open the first valve (12), the fourth valve (15) and the sixth valve (17), and disconnect the second valve (13), the third valve (14), the fifth valve (16) and the seventh valve (18). The solar collector (1) absorbs heat and heats the circulating working fluid. The circulating working fluid drives the power generation turbine (3) to expand and generate electricity. The circulating working fluid is cooled by the radiator (4) and pressurized by the compressor (6) before entering the solar collector (1) to continue absorbing heat. The water in the liquid water tank (11) enters the electrolysis device (7). The power generation turbine (3) outputs part of the electrical energy and sends it to the electrolysis device (7). The electrolysis device (7) electrolyzes water to produce hydrogen and oxygen. The produced hydrogen and oxygen are sent to the liquid hydrogen tank (9) and the liquid oxygen tank (10) for liquefaction and storage, respectively. When solar radiation intensity is below 1000 W / m 2 At that time, the lunar day supplementary combustion efficiency enhancement mode is activated; Open the first valve (12), the second valve (13), the fifth valve (16) and the seventh valve (18), and close the third valve (14), the fourth valve (15) and the sixth valve (17). The solar collector (1) absorbs heat. The liquid hydrogen and liquid oxygen in the liquid hydrogen tank (9) and the liquid oxygen tank (10) are heated to become gaseous through the heat exchanger (5). The hydrogen and oxygen are sent into the hydrogen-oxygen combustion chamber (2) to mix and burn, increasing the temperature of the circulating working fluid. The circulating working fluid drives the power generation turbine (3) to expand and generate electricity. The circulating working fluid is cooled by the radiator (4), where the water vapor condenses into liquid water. The liquid water enters the electrolysis equipment (7) or the liquid water tank (11). Then the circulating working fluid enters the heat exchanger (5) to release heat and cool down. After being pressurized by the compressor (6), it enters the solar collector (1) to continue absorbing heat.

2. The method of using a lunar base power generation system based on a hydrogen-oxygen afterburning cycle according to claim 1, characterized in that: The cyclic system adopts a closed Brayton cycle.

3. The method of using a lunar base power generation system based on a hydrogen-oxygen afterburning cycle according to claim 1, characterized in that: The circulating working fluid is based on a helium-xenon mixture.

4. The method of using a lunar base power generation system based on a hydrogen-oxygen afterburning cycle according to claim 1, characterized in that: The heat exchanger (5) is a three-fluid heat exchanger.

5. The method of using a lunar base power generation system based on a hydrogen-oxygen afterburning cycle according to claim 1, characterized in that: The heat exchanger (5) adopts a microchannel structure.

6. The method of using a lunar base power generation system based on a hydrogen-oxygen afterburning cycle according to claim 1, characterized in that: The radiator (4) has a built-in gas-liquid separator.

7. The method of using a lunar base power generation system based on a hydrogen-oxygen afterburning cycle according to claim 1, characterized in that: The minimum temperature of the radiator (4) is set to be 5K different from the freezing point of water.

8. The method of using a lunar base power generation system based on a hydrogen-oxygen afterburning cycle according to claim 1, characterized in that: During moonlit nights or periods of extreme light deficiency, the moonlit combustion power generation mode is operated. Open the second valve (13), the third valve (14), the fifth valve (16) and the seventh valve (18), and disconnect the first valve (12), the fourth valve (15) and the sixth valve (17). The working fluid is heated by the hydrogen-oxygen combustion chamber (2). The liquid hydrogen and liquid oxygen in the liquid hydrogen tank (9) and the liquid oxygen tank (10) are heated to become gaseous through the heat exchanger (5). The hydrogen and oxygen are sent into the hydrogen-oxygen combustion chamber (2) to mix and burn. The heated working fluid drives the generator turbine (3) to expand and generate electricity. The working fluid is cooled by the radiator (4). The water vapor condenses into liquid water and enters the liquid water tank (11). Then the working fluid enters the heat exchanger (5) to release heat and cool down. After being pressurized by the compressor (6), it enters the hydrogen-oxygen combustion chamber (2) again.

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