168 results about "Rankine cycle" patented technology

The invention belongs to the technical field of energy storage, and relates to a compressed air and water coupled multi-energy co-production energy storage system and method, comprising an air compressor, a first heat exchanger, a second heat exchanger, an air turbine and a cooling module; a circulating medium of the first circulating loop is fused salt; the circulating medium of the second circulating loop is water, and the second circulating loop comprises a low-temperature water tank, a first booster pump, a second heat exchanger, a high-temperature water tank, a flash tank, a third heat exchanger, a steam turbine high-pressure cylinder and a heating module which are sequentially communicated end to end. Compression heat generated by compressed air can be stored in fused salt and water, special geographical conditions needed for storing high-pressure air are avoided, meanwhile, in the energy release stage, the stored water is used for flash evaporation and fused salt heating and then enters a steam Rankine cycle to do work, combined heat and power generation can be achieved in winter, combined cooling and power generation can be achieved in summer, and the energy-saving effect is achieved. Therefore, combined supply of different kinds of energy in different seasons is achieved, and the energy supply efficiency is improved.

The invention provides a renewable energy driven iron-based zero-carbon-emission energy storage power generation system based on iron-oxygen circulation, and belongs to the technical field of renewable energy utilization and power generation, and the renewable energy driven iron-based zero-carbon-emission energy storage power generation system comprises a renewable energy consumption module, an alkaline water electrolysis hydrogen production module, a hydrogen reduction reaction module, a combustion energy supply module and a steam Rankine cycle module; the renewable energy consumption module is used for acquiring and converting renewable energy into electric energy; the alkaline water electrolysis hydrogen production module is used for producing hydrogen by using electric energy; the hydrogen reduction reaction module utilizes hydrogen to carry out reduction reaction to store energy; and the steam Rankine cycle module is used for converting energy released by combustion into electric energy. Based on iron-oxygen circulation and through cooperative operation of the renewable energy consumption module, the alkaline water electrolysis hydrogen production module, the hydrogen reduction reaction module, the combustion energy supply module and the steam Rankine cycle module, efficient consumption of renewable energy, effective storage and conversion of energy and zero-carbon-emission green electricity production are achieved.

The invention discloses an air Brayton cycle and water vapor Rankine cycle coupling system and a working method.The working medium of a Brayton cycle system is air, the Brayton cycle system is provided with a refrigeration end, a first power generation end and a plurality of first heat exchange parts, and the cycle working medium of a cycle energy storage system is a heat storage medium; the circulating energy storage system is provided with a plurality of second heat exchange parts and a plurality of third heat exchange parts, the second heat exchange parts and the first heat exchange parts conduct heat exchange in a first heat exchanger, a working medium of the Rankine cycle system is water vapor, and the Rankine cycle system is provided with a second power generation end and a plurality of fourth heat exchange parts. And the fourth heat exchange part and the third heat exchange part exchange heat in the second heat exchanger. According to the invention, refrigeration can be realized, and energy storage and power generation can be realized, so that electric energy can be utilized more reasonably, and the purpose of consumption reduction can be achieved; working media adopted by the Brayton cycle system and the Rankine cycle system are air and water respectively, and the two working media do not generate redundant carbon emission, so that the purpose of reducing carbon is achieved.

The invention discloses a cross-seasonal long-time energy storage system and method with sand as a heat storage medium, and belongs to the technical field of long-time energy storage.The sand is used as the energy storage medium, a photovoltaic system is coupled for energy storage, heat conduction oil heat exchange and steam Rankine cycle are used for energy adjustment and power generation, the activity of heat conduction oil can be kept, and the energy storage efficiency is improved. And meanwhile, the solar energy utilization efficiency is improved. The system cost is reduced, the influence on the environment is reduced, and cross-season long-time energy storage and heat supply of energy storage in summer and heat supply in winter can be achieved.

The invention provides an energy gradient utilization steam Rankine cycle power generation system and method for nuclear fusion, and belongs to the field of nuclear fusion energy conversion and utilization. Different temperature heat of a cladding, a divertor and a vacuum chamber is guided into a high-temperature independent heat storage loop, a medium-temperature independent heat storage loop and a low-temperature independent heat storage loop respectively, an operation section stores heat, and a pause section releases heat; feed water is heated step by step through a multi-stage preheater, an evaporator and a superheater according to the sequence of low temperature, medium temperature and high temperature, and superheated steam of 550 DEG C is formed to continuously drive a turbine to generate power. Decoupling of intermittent output of the fusion reactor and continuous operation of the power generation system is achieved, steam extraction of a steam turbine is omitted, the structure is simplified, and the energy utilization rate and the circulation efficiency are improved.

The invention relates to a one-machine, three-device and four-working-medium full-effect power generation system technology for earth rock heat and other steam energy, in particular to a'gas-gas-steam-steam 'one-machine, three-device and four-cycle' micro-condensation cycle water feeder system, a double-water working medium heat exchanger system, a reverse Carnot cycle system and an earth rock heat output system which are matched with one another. A duplex reverse Carnot cycle system double-effect parallel medium two-direction progressive technological process, a single working medium through-flow structure and Rankine cycle uniform heat variable flow through-flow with'thermal unloading water and thermal loading water 'single working medium partition wall convection' micro-condensation heat regeneration and'main energy small flow steam and heated cycle huge running water 'double working medium partition wall convection heat exchange' are systematically created. The invention relates to a geothermal steam working medium independent heat exchange type output circulation, Rankine cycle power generation with two closed working media equal in heat and unequal in water through-flow, and a multi-system working principle that model selection is performed according to 6-20 times of through-flow and accumulation of small efficiency factors is equal to efficiency is combined, and a one-machine, three-device and four-cycle full-effect power generation system of general steam turbine distribution system full-efficiency power generation is included.

The invention provides a volumetric supercritical carbon dioxide Brayton cycle variable load system, belongs to the technical field of supercritical carbon dioxide Brayton cycle power generation, and can at least partially solve the problems that an existing steam Rankine cycle unit does not utilize the supercritical carbon dioxide Brayton cycle to integrally operate on a supercritical point and has no project. The Brayton cycle system comprises a compressor, a main loop and an adjusting branch, the adjusting branch comprises a pressure adjusting assembly, the amount of circulating carbon dioxide working media in the system is adjusted, the inlet pressure of the compressor is adjusted, and the working point of the compressor is changed; the temperature and pressure of the carbon dioxide working medium at the turbine inlet are changed by adjusting the heat exchange amount of the heat source heat exchanger, and rapid load changing is achieved.

The systems of the present disclosure include a solar-powered steam Rankine cycle (SRC) subsystem to convert solar energy into thermal energy and store the thermal energy; an ejector refrigeration cycle (ERC) subsystem to provide a first refrigeration effect with a first range of temperature based on the thermal energy; an absorption refrigeration cycle (ARC) subsystem to provide a second refrigeration effect with a second range of temperature based on the thermal energy; a brine refrigeration cycle (BRC) subsystem to generate and store when there is no cooling demand and provide a third refrigeration effect with a third range of temperature based on the electrical power generated by the ERC subsystem and the ice being melted; and an adsorption refrigeration cycle (ADRC) subsystem to provide a fourth refrigeration effect with a fourth range of temperature based on the thermal energy.

To provide a working medium for heat cycle which has less influence over the ozone layer, which has less influence over global warming and which provides a heat cycle system excellent in the cycle performance (the efficiency and the capacity), and a heat cycle system excellent in the cycle performance (the efficiency and the capacity). A working medium for heat cycle comprising 1,2-difluoroethylene is employed for a heat cycle system (such as a Rankine cycle system, a heat pump cycle system, a refrigerating cycle system 10 or a heat transport system).

The invention discloses an energy comprehensive utilization system based on a fusion device and a control method thereof. The system comprises a divertor cooling circulation loop, a cladding tritium production loop, a first cooling loop, a second cooling loop, a Brayton circulation loop and a Rankine circulation loop. The first cooling loop and the second cooling loop are used for cooling and purifying the cladding, and when the thermal load of the fusion device is smaller than a preset threshold value, only the first cooling loop is operated; when the thermal load of the fusion device is larger than a preset threshold value, the first cooling loop and the second cooling loop operate in parallel. The second cooling loop is indirectly or directly connected with the Brayton cycle loop or the Rankine cycle loop through valve switching; the Brayton cycle loop and the Rankine cycle loop are power generation loops, and power generation modes comprise Rankine cycle power generation, Brayton cycle power generation and combined power generation of Rankine cycle and Brayton cycle. The energy comprehensive utilization of the fusion device can be realized, and meanwhile, the system flexibility is improved.

The application discloses a heat-driven Rankine cycle system, which comprises a booster assembly and a vortex tube, and can realize the increase of fluid pressure and temperature by using low-grade heat energy without inputting external energy, so as to obtain high-temperature and high-pressure fluid, drive the expander to do work, realize the effective utilization of low-grade heat energy below 100 DEG C, and control the flow between the generator and the high-pressure gas source inlet by a valve, so as to match the heat required by the heat exchanger.

According to the carbon cycle ammonia production system and method based on chemical-looping water splitting, in the carbon cycle ammonia production system based on chemical-looping water splitting, a chemical-looping carbon cycle nitrogen-hydrogen cogeneration module combines a fuel reactor and a high-temperature solid carbon dioxide electrolytic cell in a chemical-looping process, and hydrogen-nitrogen cogeneration with zero carbon emission is achieved. According to the Harbin process ammonia preparation module, multi-stage compression and intermediate cooling are carried out on raw material gas, the system energy consumption is reduced, and moisture used for a steam reactor is preheated. Then, a multi-stage reactor is adopted in the ammonia production process, heat recovery and raw material recovery are implemented, and a chemical chain product is efficiently converted into ammonia gas. The concentrating solar thermoelectric steam co-production module adopts molten salt as a working medium and is combined with a reheat return Rankine cycle containing a heat regenerator to meet the heat and electricity requirements of the system. The system utilizes a chemical-looping water splitting technology to prepare high-purity ammonia gas under a zero-carbon condition, and has the advantages of high efficiency, low emission, high resource utilization and the like.

The invention discloses a heat energy power generation system based on efficient Rankine cycle and a control method. An outlet of a working medium pump included in the heat energy power generation system is connected with a heat regenerator cold side inlet through a heat regenerator cold side bypass valve. The heat regenerator cold side bypass valve is connected with a working medium inlet of the cooling liquid heat exchanger; a working medium outlet of the cooling liquid heat exchanger is respectively connected with inlets of the turbine bypass valve and the turbine inlet valve; an outlet of the turbine inlet valve is connected with a working medium inlet of the turbine power generation all-in-one machine; a working medium outlet of the turbine power generation all-in-one machine is connected with a hot side inlet of the heat regenerator through a turbine outlet valve; a hot side outlet of the heat regenerator is connected with a working medium inlet of the condenser; a condenser working medium outlet is connected with a liquid storage tank inlet; the liquid storage tank is connected with the working medium pump; the outlet of the cooling channel is connected with the working medium inlet of the condenser; and the outlet of the cooling channel is connected with the working medium inlet of the turbine power generation all-in-one machine. The low-boiling-point organic working medium is adopted to absorb cooling liquid heat of external devices (such as brake pads), and consumption reduction and efficiency improvement are achieved.

The invention belongs to the technical field of gas turbine cooling, and particularly relates to a gas turbine cooling air multi-energy combined supply system. Comprising a multi-energy combined supply system, a gas turbine system and a transcritical Rankine cycle system, the gas turbine system and the transcritical Rankine cycle system are coupled through a TCA, cooling air in the multi-energy combined supply system is cooled through the TCA and then enters a gas turbine, and a medium in the transcritical Rankine cycle system absorbs heat in the TCA and then enters a turbine to expand and do work. Cooling water outside the system absorbs heat through a condenser in the transcritical Rankine cycle system to form high-temperature water, the high-temperature water supplies heat to a bromine cooling unit in the multi-energy combined supply system, and low-temperature water generated by the bromine cooling unit is atomized and then mixed with inlet air of an air compressor so as to reduce the inlet air temperature. According to the system, the combined cycle power generation efficiency can be improved, multi-energy combined supply and stable energy recovery of gas turbine cooling air can be achieved, and safe operation of a gas turbine cooling system is fundamentally guaranteed.

The invention discloses a solar energy-biomass collaborative conversion distributed energy system based on calcium-based thermochemical heat storage driving biomass gasification. The solar energy-biomass collaborative conversion distributed energy system comprises a heat storage system, a biomass gasification system, a solid oxide fuel cell combined gas turbine power generation system, a Rankine cycle power generation system, a hot water supply system and pipelines for connecting all the systems. According to the heat storage system, heat energy is stored in the form of chemical energy through the concentrating solar energy technology and the calcium-based thermochemical heat storage technology, and continuous operation of the system is guaranteed. According to the biomass gasification system, heat released in the calcium oxide carbonation process is used for providing heat for the biomass gasification furnace, and biomass materials are converted into high-temperature synthesis gas. And then the high-temperature synthesis gas passes through a high-temperature purification device and then enters a solid oxide fuel cell-gas turbine system of top layer circulation to generate electric power. And finally, the waste heat flue gas provides heat energy for a steam power Rankine cycle and a hot water supply system.

The utility model discloses a low-temperature phase change Rankine cycle energy storage and power generation system, which integrates energy storage, power generation and heat pump functions, and innovatively integrates three subsystems of energy storage and charging, organic Rankine cycle power generation and heat pump cycle. Efficient storage and conversion of low-temperature heat energy are achieved through the compression and expansion all-in-one machine, the overheating heat exchanger, the supercooling heat exchanger, the storage tank, the pump and other core assemblies. The energy storage charging and power generation system shares a cycle working medium and heat storage medium circulation system, working modes are flexibly switched, heat energy can be stored in a charging mode, and the heat energy can be released in a power generation mode to drive Rankine cycle power generation. The heat management capacity of the system is further enhanced through heat pump circulation, and the overall energy efficiency is improved. The system is compact in design and comprehensive in function, and a new scheme is provided for efficient utilization and energy storage of renewable energy sources.

The invention discloses a closed steam Rankine cycle power system configuration optimization and variable load control method based on heat storage feed-forward, and the closed steam Rankine cycle power system configuration optimization comprises the steps: adding a water supply bypass valve and a water storage tank in a system; an inlet water temperature sensor and an outlet steam temperature sensor are arranged at an inlet and an outlet of a boiler respectively, a fuel flow meter is arranged at an outlet of a fuel regulating valve, a water flow meter is arranged at an outlet of a main water supply valve, a power sensor is arranged at a rotating shaft of a turbine, and the water supply flow regulating capacity and the dynamic stability capacity of the system are improved through system configuration optimization. A system variable load control strategy after configuration optimization is further provided, a water supply bypass valve is adopted to control the system operation load, a fuel regulating valve is adopted to control the boiler outlet steam temperature, and the deviation between the steady-state heat storage capacity and the real-time heat storage capacity of the boiler is used as a fuel regulating valve auxiliary control signal. The system effectively solves the problems of overshoot of the steam temperature of the boiler outlet and low variable load rate of the system, and improves the safety and the rapid variable load capacity.

The application discloses a kind of energy comprehensive utilization system based on fusion device and its control method, the system includes: divertor cooling circulation loop, blanket tritium production loop, first cooling circuit, second cooling circuit, brayton cycle loop and rankine cycle loop;First cooling circuit and second cooling circuit are used for blanket cooling and purification, when the heat load of fusion device is less than preset threshold, only first cooling circuit is operated;When the heat load of fusion device is greater than preset threshold, first cooling circuit and the second cooling circuit are operated in parallel;Second cooling circuit is indirectly connected or directly connected with brayton cycle loop or rankine cycle loop by valve switching;Brayton cycle loop, rankine cycle loop is power generation circuit, and power generation mode includes rankine cycle power generation, brayton cycle power generation, combined power generation of rankine cycle and brayton cycle.The application can realize fusion device energy comprehensive utilization, and improve system flexibility simultaneously.

The invention provides a liquefied air energy storage system coupled with LNG cold energy Rankine cycle power generation, and particularly relates to the technical field of liquefied air energy storage. During charging, an LNG cold source enters the first heat exchange side of the first LNG heat exchanger, the first heat exchange side of the third LNG heat exchanger and the second LNG heat exchanger, the first heat exchange side of the second LNG heat exchanger exchanges heat with air and cools the air, during discharging, the LNG cold source enters the first heat exchange side of the cold energy power generation condenser, and the second heat exchange side of the second LNG heat exchanger exchanges heat with the air and cools the air. Liquefied air in the cold energy power generation condenser and LNG jointly provide cold energy and generate power, the LNG cold source enters different heat exchangers for heat exchange during discharging and charging, the LNG cold source and the heat exchangers operate independently and do not interfere with each other, the utilization rate of LNG cold energy can be increased, and the efficiency of the liquid air energy storage system is further improved.

A system for providing mechanical and / or electric power from heat power. A heat medium is arranged in a flow circuit comprising: a condensation channel, a pump channel, an evaporation channel and a turbine channel, substantially in a Rankine cycle. Heating power is provided for evaporation of the heat medium and cooling power is provided for condensation of the heat medium. The pump channel is arranged in the liquid phase portion and a turbine device is arranged in the gas phase portion. The pump channel generates a pressure due to the rotation. The turbine channel comprises a turbine device. The flow circuit is closed so that no heat medium may escape to the surroundings.

The invention discloses an ORC power generation and three-mode heat storage system driven by hot dry rock terrestrial heat, and relates to the technical field of hot dry rock resource exploitation. The system comprises an organic Rankine cycle loop, a heat storage loop and a waste heat loop. The Rankine cycle loop comprises a generator, a turbo expander, a condenser and an evaporator, the turbo expander adopts a CO2 working medium as a circulating hot working medium, and the heat storage loop comprises a cold tank, a heat exchanger and a hot tank which are connected in sequence. According to the heat storage loop, the heat storage temperature range (150-300 DEG C) is highly matched with the temperature range (150-200 DEG C) of the hot dry rock, the performance of the organic Rankine cycle loop adopting the CO2 working medium is further improved compared with that of a traditional working medium, the waste heat loop is additionally arranged, waste heat of the condenser is used for heating low-temperature water generated by the heat exchanger through the waste heat loop, and the heat storage temperature range (150-300 DEG C) is greatly improved. The water temperature injected into the hot dry rock is increased, the energy utilization rate is increased, and the energy efficiency is improved.

The application discloses a nuclear power plant system and an operation method for direct power generation and electricity storage of a fusion reactor pulse heat source, and belongs to the technical field of nuclear fusion power generation, electricity storage and thermal systems. In order to meet the basic requirement of power grid for stable power output, in view of the inherent problems of the heat storage system of the nuclear fusion reactor pulse heat source, such as huge heat storage capacity, large heat shock and frequent heat shock, a Rankine cycle steam turbine generator capable of following the variable working condition operation of the pulse heat source is adopted to directly generate power, and the pulse electric energy is stabilized and output or stored by using the electricity storage mode; during the intermittent stage of the fusion, steam is generated by an electricity storage power heating boiler to maintain the hot state of the steam turbine. The application cancels the super-large power and complex system heat storage system, eliminates the heat loss of the super-large heat storage tank and the complex pipe system, and eliminates the safety hazards of the high-frequency and large-amplitude heat shock in the heat storage system. On the basis of realizing the power supply following the demand of the power grid, the power generation efficiency of the nuclear power plant is improved, so that the overall economic benefit of the power plant is improved.

The present application relates to the technical field of energy storage, and relates to an energy storage system based on thermochemical energy storage and Rankine cycle and an operation method. The energy storage system comprises a storage device, an energy storage device, an energy release device and a power generation device. The energy storage device comprises a calcium carbonate rotary calcining kiln, a first heat exchanger network and an electric heater, and the structural components are sequentially connected. The electric heater is used to convert excess electricity into heat energy, the calcium carbonate decomposition reaction is carried out in the calcium carbonate rotary calcining kiln, the heat energy is converted into chemical energy stored in calcium oxide, the energy release device is used to convert the chemical energy stored in calcium oxide into heat energy, the heat energy is converted into electricity by the power generation device, and the electricity demand of the terminal user is met. The energy storage system provided by the present application can realize the conversion, transmission and storage of different energies, has high energy conversion efficiency, can effectively reduce the coal consumption in the energy conversion process, and meets the energy saving and carbon reduction and flexibility reconstruction requirements of coal-fired power plants.

The invention provides an underwater vehicle one-way heat storage type ocean temperature difference energy power generation system which comprises an underwater vehicle body, a one-way heat storage type evaporator power generation system and a diving system. The one-way heat storage type evaporator power generation system and the rising and diving system are arranged in the underwater vehicle body. The power generation system comprises a turbine generator set, a condenser, a working medium pump and a heat storage type evaporator. An outlet of the heat storage type evaporator is connected with an inlet of the turbine generator set, and the turbine generator set is sequentially connected with the turbine generator set, the condenser, the working medium pump and an inlet of the heat storage type evaporator. Sea surface temperature seawater heat is stored through the energy storage phase change material, heat is not released to the environment in the submerging process of the underwater vehicle, when the underwater vehicle reaches the seabed, the stored heat and the cold energy of environment cold seawater are used for constructing temperature difference, and Rankine cycle is formed to achieve power generation. Therefore, the underwater vehicle has the capability of autonomously generating power by using the ocean temperature difference in the navigation process, and the endurance mileage and the sensor carrying capability of the underwater vehicle are improved.

The invention discloses an energy storage type heat pump-heat and power cogeneration system, and belongs to the technical field of energy storage. Comprising a heat pump cycle, a power generation cycle and a storage tank, and when electric energy is sufficient, the system operates in a reverse Rankine cycle heat pump mode; when the electric energy is in shortage, the system operates in a forward circulation discharge mode. According to the system, high electricity-electricity conversion efficiency can be achieved, residual energy can be converted into heat to be stored to achieve heat supply, and therefore ultrahigh energy utilization efficiency is achieved.

The invention discloses an offshore platform fuel gas and supercritical carbon dioxide Rankine cycle combined power generation system, and relates to the technical field of offshore platform power generation systems. The problems that an existing thermal power generation technology in which a gas turbine and a steam turbine jointly operate is very low in power generation efficiency and high in carbon emission no matter in the low-temperature heat source field or the high-temperature heat source field are solved. Compressed air is mixed with fuel and combusted, high-temperature and high-pressure flue gas is generated, and a gas turbine is pushed to drive a gas turbine generator to generate power; high-temperature flue gas exhausted by the gas turbine enters the waste heat boiler, heat of the flue gas is used for heating a CO2 working medium in the waste heat boiler to generate high-temperature and high-pressure sCO2, an sCO2 turbine is pushed to drive a turbine generator to generate power, and gas and supercritical carbon dioxide Rankine cycle combined power generation is formed. The exhaust gas temperature of the boiler can be reduced by increasing the inlet smoke temperature of the waste heat boiler, so that the boiler efficiency can be improved after the flue type afterburning device is added, and the purposes of energy conservation and emission reduction are achieved. The invention is suitable for the technical field of offshore power generation.

The systems of the present disclosure include a solar-powered steam Rankine cycle (SRC) subsystem to convert solar energy into thermal energy and store the thermal energy; an ejector refrigeration cycle (ERC) subsystem to provide a first refrigeration effect with a first range of temperature based on the thermal energy; an absorption refrigeration cycle (ARC) subsystem to provide a second refrigeration effect with a second range of temperature based on the thermal energy; a brine refrigeration cycle (BRC) subsystem to generate and store when there is no cooling demand and provide a third refrigeration effect with a third range of temperature based on the electrical power generated by the ERC subsystem and the ice being melted; and an adsorption refrigeration cycle (ADRC) subsystem to provide a fourth refrigeration effect with a fourth range of temperature based on the thermal energy.

The invention relates to the technical field of energy storage and conversion, and discloses a Carnot cell system driven by ocean temperature difference energy, comprising: an energy charging circulation system, which drives a first organic working medium to circularly flow through excess electric power and exchanges heat with deep seawater to form a cold working medium; the energy storage device exchanges heat with a cold-state working medium generated by the energy charging circulating system to form a cold medium and stores the cold medium; and a second organic working medium flows in the energy release circulating system in a Rankine cycle mode, the second organic working medium can exchange heat with surface seawater to form superheated steam, a generator is driven to generate electricity, a low-temperature and low-pressure working medium is formed, and the low-temperature and low-pressure working medium exchanges heat with the cooling capacity medium in the energy storage device and is condensed to form the liquid second organic working medium. In the electricity consumption trough period, the excess power of the power grid is stored in the form of a cold medium by utilizing the low temperature of deep seawater; in the peak period of electricity utilization, the high temperature of surface seawater is utilized, power is generated in a Rankine cycle mode, and the cooling capacity medium stored in the valley period of electricity utilization is utilized to condense a Rankine cycle working medium.

The present invention discloses a tower-tank combined solar-thermal composite compressed air energy storage system, which relates to the technical field of energy storage and includes: an air compression branch, which is successively connected in series by a compressor, a compression-side heat exchanger, and a gas storage device; an air expansion branch, which is successively connected in series by a gas storage device, an expansion-side preheater, an expansion-side reheater, and an expander; a compression heat cycle, which is connected in series from head to tail by a compression heat low-temperature working fluid storage tank, a compression-side heat exchanger, a compression heat high-temperature working fluid storage tank, and an expansion-side preheater; a trough solar thermal power generation cycle, which is connected in series from head to tail by a compression heat high-temperature working fluid storage tank, a trough solar thermal field, a trough solar thermal high-temperature working fluid storage tank, and a Rankine cycle device; a tower solar thermal cycle, which is connected in series from head to tail by a tower solar thermal low-temperature working fluid storage tank, a tower solar thermal collector, a tower solar thermal high-temperature working fluid storage tank, and an expansion-side reheater. This system applies compressed air energy storage to the consumption and utilization of clean heat energies such as geothermal energy and solar thermal energy.

The application relates to the technical field of hypersonic aircrafts, and particularly discloses a heat protection and power generation integrated system and method based on a semi-open Rankine cycle, which comprises a water storage tank, a hydrogen storage tank, an electrolytic cell, a steam turbine, a heat exchanger, a hydrogen turbine and a combustion chamber. The system uses liquid water to absorb heat at the leading edge of the aircraft, vaporizes into water vapor to drive the steam turbine to generate power, realizes active heat protection and waste heat conversion; the water vapor after work exchanges heat with liquid hydrogen in the heat exchanger to condense, preheats the fuel while completing the Rankine cycle; the vaporized hydrogen drives the hydrogen turbine to generate power again, improving the power generation efficiency; the condensed water can be introduced into the electrolytic cell to be electrolyzed into hydrogen and oxygen, and the generated hydrogen directly supplements the fuel. The system realizes efficient heat protection, continuous power generation, in-situ production and supplement of fuel through structure coupling, and effectively reduces the mass of the homeward journey system by converting water into fuel in the middle and later stages of flight, thereby improving the endurance and high-altitude performance of the aircraft.