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2216results about "Steam engine plants" patented technology

Two-phase cold plate liquid cooling ORC waste heat recovery and photovoltaic cooperative energy supply system and method

The invention discloses a two-phase cold plate liquid cooling ORC waste heat recovery and photovoltaic cooperative energy supply system and method, and relates to the technical field of energy management and waste heat utilization. The two-phase cold plate liquid cooling ORC waste heat recovery and photovoltaic cooperative energy supply system and method comprises the following steps that S1, thermal parameters and electric power states related to cooperative energy supply are collected, and a thermoelectric cooperative input data set is constructed and preprocessed; s2, the supply and demand difference of the high-temperature steam in the main condensation branch and the ORC branch is recognized; s3, coordinating a photovoltaic power supply structure and a cooperative energy supply sequence, and judging the matching degree of cooperative energy supply to a load; and S4, evaluating a cooling, heating and power cooperation and double-source coupling state in combination with a load matching condition and an output behavior. The problems that in an existing two-phase cold plate liquid cooling structure, high-temperature steam is not recycled, photovoltaic power generation does not participate in linkage energy supply, the power source is single, waste heat waste is serious, and energy collaboration is insufficient are solved.
Owner:TIANJIN TIER TECHNOLOGY CO LTD

Fusion power generation system, power generation control method, storage medium and controller

The invention discloses a fusion power generation system, a power generation control method, a storage medium and a controller, and relates to the technical field of fusion energy. The fusion power generation system comprises a steam generator set, a plurality of Tokamak devices and a plurality of thermal conversion units, the Tokamak devices and the thermal conversion units are in one-to-one correspondence, each thermal conversion unit is provided with a first channel and a second channel, and the Tokamak devices and the first channels of the corresponding thermal conversion units form a cladding cooling loop. The steam generator set and a plurality of second channels connected in sequence form a power generation loop; wherein the plurality of Tokamak devices are configured to operate in an alternating or complementary manner; the thermal conversion units are configured to receive heat from the corresponding cladding cooling loops and convert working media in the power generation loops into steam through the heat so as to drive the steam generator set to generate power. According to the system, the plurality of Tokamak devices operate in an alternating or complementary mode, so that heat loss can be reduced, the power generation efficiency is improved, and the plasma control difficulty is reduced.
Owner:聚变新能(安徽)有限公司

A supercritical carbon dioxide cycle generator set water spray desuperheating system

This invention discloses a supercritical carbon dioxide cycle generator set water spray desuperheating system, comprising a supercritical carbon dioxide cycle power generation system and a water spray desuperheating system; the supercritical carbon dioxide cycle power generation system includes a heater, a screen-type superheater, a final-stage superheater, and a turbine; the water spray desuperheating system includes a first desuperheating water injection point, a second desuperheating water injection point, and a liquid-water separation system; the heater outlet is sequentially connected to the turbine inlet via the first desuperheating water injection point, the screen-type superheater, the second desuperheating water injection point, and the final-stage superheater; the turbine outlet is connected to the inlet of the liquid-water separation system; the liquid outlet of the liquid-water separation system is connected to the first and second desuperheating water injection points; and the gas outlet of the liquid-water separation system is connected to the heater inlet. This system can solve various problems caused by carbon dioxide desuperheating.
Owner:XIAN THERMAL POWER RES INST CO LTD +1

Photovoltaic-driven IDC electric cooling linkage method and device

The invention discloses a photovoltaic-driven IDC electric-cooling linkage method and device, and belongs to the technical field of IDC electric-cooling linkage, and the method comprises the following steps: S1, constructing a gravity energy storage structure; s2, the gravity object is lifted to the highest point of the gravity object channel through the gravity energy storage structure; s3, air at the bottom of the gravity object channel is compressed for the second time, and a thermal cracking reaction is carried out; s4, thermal cracking gas generated by the thermal cracking reaction is drained, and combustion products are discharged into a gas storage chamber; s5, the generated steam waste heat pushes a turbine in a turbine chamber to do work for power generation; and S6, domestic hot water and night heating hot water are prepared, convective heat exchange is conducted, the low-temperature reclaimed water obtained after heat exchange is heated into high-temperature steam in a cooler, the high-temperature steam enters a turbine to become high-temperature reclaimed water, and the high-temperature reclaimed water flows into a control center or a water storage pool. The organic matter compressed garbage is used as a gravity object for gravity energy storage, and heavy oil, solid fuel, adsorbents and other high-value products are produced in the gravity energy storage process.
Owner:HANGZHOU QINHE ENERGY TECHNOLOGY CO LTD

High-pressure combustion combined heat and power generation energy storage system and method for producing hydrogen and oxygen through electrolysis

The invention discloses a high-pressure combustion combined heat and power generation energy storage system and method for hydrogen and oxygen production through electrolysis, and relates to the field of hydrogen energy storage. After the electrolytic cell produces high-pressure hydrogen and oxygen, the high-pressure hydrogen and oxygen are stored in the hydrogen / oxygen storage tank, the system can operate in a hydrogen / oxygen mode, and in the oxygen mode operation, the hydrogen and oxygen steam mixed gas from the oxygen storage tank and the hydrogen / oxygen evaporation compressor are combusted in the high-pressure combustion chamber to generate superheated steam, and then the superheated steam enters the expansion turbine to do work; due to excessive oxygen, dead steam after acting is separated into two working media through a gas-liquid separator, that is, gas enters a cooler to be cooled and then returns to a combustion chamber through a hydrogen / oxygen evaporation compressor, drainage water generated after liquid enters a heat supply heat exchanger is pressurized through a water pump and then enters a high-temperature combustion chamber, and therefore clean utilization of hydrogen energy and cyclic regeneration of the working media are achieved. The system can realize high power generation efficiency and excellent environmental protection performance, and is suitable for regions requiring stable consumption of fluctuating renewable energy sources, power and heat supply and the like.
Owner:XI AN JIAOTONG UNIV

Energy efficiency optimization scheduling method of marine SOFC heat recovery system

The invention relates to the technical field of ship energy control, and provides an energy efficiency optimization scheduling method for a marine SOFC heat recovery system, and the method comprises the steps: dynamically distributing an SOFC waste heat path through a heat energy distribution optimization algorithm according to the type of a current ship operation condition, and for a high-load condition, taking a propulsion power demand as a priority target, and carrying out the optimal scheduling of the SOFC waste heat path; the SOFC waste heat is preferentially guided into a ship power position to assist in propelling; for a medium load working condition, SOFC waste heat is distributed to auxiliary propulsion and life service energy according to a preset proportion, and the preset proportion is finely adjusted according to real-time requirements; and for a low-load working condition, the SOFC waste heat is preferentially introduced into life service energy, and the distribution sequence and proportion are dynamically adjusted according to environmental parameters. A machine learning classification model matched with a multi-threshold rule is introduced for working condition recognition, and recognition of different working conditions is achieved; by constructing a dynamic heat energy scheduling mechanism, dynamic optimal allocation of SOFC waste heat among different energy utilization paths is achieved, and the flexibility and adaptability of heat energy utilization are improved.
Owner:DEEP SEA TECH & SCI TAIHU LAB LIANYUNGANG CENT

Compressed carbon dioxide energy storage equipment, carbon dioxide storage device and control method

The invention relates to compressed carbon dioxide energy storage equipment, a carbon dioxide storage device and a control method, a plurality of independent carbon dioxide storage air bags are detachably installed on a supporting frame, and the carbon dioxide storage air bags can serve as floating assisting air bags of water equipment after storing air; each carbon dioxide storage air bag is independently monitored and controlled through an inflation and deflation control component, the pressure of air stored in each air bag can be monitored in real time, and the storage and release amount of carbon dioxide can be quickly and flexibly adjusted; the displacement sensor monitors the posture change of the supporting frame in real time, the controller adjusts the inflation and deflation strategy or the system operation state in time according to the current air pressure state of each carbon dioxide storage air bag and the posture change of the supporting frame, and air bag damage or system faults caused by structural instability are effectively prevented. A plurality of independent carbon dioxide storage air bags in the air bag type storage device can be flexibly arranged on a supporting frame to adapt to different terrains and space constraints.
Owner:PETROCHINA SHENZHEN NEW ENERGY RESEARCH INSTITUTE CO LTD +1

Energy system and method for coupling calcium-based thermochemical heat storage and carbon capture

The invention discloses an energy system and method for coupling calcium-based thermochemical heat storage and carbon capture. The energy system comprises a calcination unit, a carbon dioxide pretreatment storage unit, a calcium oxide heat exchange storage unit, a carbonation reaction unit and a heat utilization unit which are arranged based on a boiler. The calcining unit takes green valley electricity as energy to drive calcining reaction to realize heat storage, and generated CaO is processed by the calcium oxide heat exchange storage unit and then is stored for use in a heat release stage; generated COs are stored for standby application after passing through the carbon dioxide pretreatment storage unit; in the heat release stage, CaO and the desulfurized flue gas are subjected to heat release carbonation reaction in the carbonation reaction unit, and heat is released; caCO3 generated by the carbonation reaction can be used for the next heat storage stage; and the heat released by the carbonation reaction is conveyed to the heat utilization unit for heat exchange. Through coupling of calcium-based thermochemical heat storage and carbon capture, green electricity and off-peak electricity are fully utilized, and efficient storage and gradient utilization of energy are achieved.
Owner:DONGFANG ELECTRIC (CHENGDU) INNOVATION RES CO LTD +1

Self-adaptive adjustment method and system for full-load peak regulation of coal-fired power generation unit

The invention relates to the technical field of peak regulation of coal-fired power units, and discloses a self-adaptive regulation method and system for full-load peak regulation of a coal-fired power unit. The method comprises the steps of collecting unit operation parameters such as boiler temperature, turbine rotating speed and generator voltage, and power grid peak regulation instructions such as real-time load demand and predicted load fluctuation; analyzing a peak regulation state based on the collected data, and dividing the peak regulation state into three types of stable operation, transition regulation and limit peak regulation; then calculating an adjustment characteristic quantity according to the current state and the operation parameters, wherein the characteristic quantity reflects the matching relationship between the unit performance and the peak regulation requirement; generating a plurality of groups of adjustment schemes including combustion optimization, steam adjustment and power control based on the characteristic quantity and the peak regulation instruction; and selecting and executing an optimal scheme by evaluating indexes such as efficiency loss, stability influence and maintenance cost. The method can dynamically respond to the load change of the power grid, accurately adapt to the peak regulation requirement in the full load range, and enable the peak regulation of the unit to be more flexible and harmonious.
Owner:JIANGSU GUOXIN SHAZHOU POWER GENERATION CO LTD

Compressed air energy storage power station multistage protection and controlled discharge control method and system

The invention belongs to the technical field of compressed air control, and particularly relates to a compressed air energy storage power station multistage protection and controlled discharge control method and system. Comprising the steps that a compressed air energy storage power station system comprising a discharge bypass and a discharge valve and a safety valve which are arranged on the downstream of the discharge bypass is built; when pressure abnormity occurs, first-stage response is started, operation parameters of the compressed air energy storage power station system are adjusted, or a discharge bypass is started in an overlapped mode, and the pressure abnormity trend is restrained; when the first-stage response cannot restrain pressure abnormity, the second-stage response is started, the opening degree of the release valve is adjusted, and gas release is conducted; and when the second-level response cannot restrain pressure abnormity, third-level response is started, a stepped release sequence is adopted, the opening degree of a release valve is increased, meanwhile, the opening degree of a safety valve is gradually increased to conduct gas release, and finally final release is conducted by triggering a rupture disk. According to the invention, through a stepped control strategy, the defects that a single protection device is single in protection means and easy to over-excite protection are avoided.
Owner:SHANDONG UNIV

Twin-turbine power generation device suitable for thermal power generating unit

The invention discloses a double-turbine power generation device suitable for a thermal power generating unit, relates to the technical field of thermal power generation, and mainly aims to improve the power generation efficiency of the thermal power generating unit. According to the main technical scheme, a boiler system is connected with steam inlet valves of a first steam turbine power generation sub-set and a second steam turbine power generation sub-set through pipelines, and corresponding steam is conveyed to the two sub-sets by adjusting the opening degree of a valve to be matched with a load distribution target. After the two subsets do work, part of steam is fed into a steam extraction heat regeneration system to recover heat and is used for heating boiler feed water; and the residual exhaust steam enters the condenser system to be condensed into water, and the condensed water is conveyed to the steam extraction heat regeneration system to be heated to become boiler feed water, so that circulating power generation is realized.
Owner:NORTH CHINA ELECTRICAL POWER RES INST +1

High efficiency, closed, scalable, liquid and compressed air storage and generation system.

A closed cycle power storage and generation system comprising compressed air storage J and liquefied air energy storage D, wherein air is compressed in a compressor A, before being cooled in a heat ex
Owner:SIMON PATRICK EDWARD GLYNN-RILEY

Liquefied air energy storage system

The utility model discloses a liquefied air energy storage system which comprises a molecular sieve water separator and a molecular sieve adsorption tower, a separator air output pipe is connected with a top gas connecting pipe of the molecular sieve adsorption tower, and a bottom gas connecting pipe of the molecular sieve adsorption tower is connected with a cold box front compressor unit. The cold box front compressor unit is communicated with an air pipeline in the cold box, and an outlet of the air pipeline in the cold box is communicated with a first liquefied air storage tank through a first liquefied air output pipe with a first throttling valve; the output end of a liquid air pressure pump on a first liquefied air storage tank output pipe of the first liquefied air storage tank is communicated with the air input end of the expansion unit, the air output end of the expansion unit is provided with a hot blowing conveying pipe and a cold blowing conveying pipe, and the hot blowing conveying pipe is communicated with a bottom gas connecting pipe through a first heater and an electric heater; and the output end of the cold blowing gas conveying pipe is connected to the output end of the electric heater output pipe. The device has the advantages of simple structure, low energy consumption and full utilization of heat energy.
Owner:江苏富瑞能源服务有限公司

Carbon dioxide combined cooling heating and power supply system

The invention relates to a carbon dioxide combined cooling heating and power supply system, which realizes liquid carbon dioxide energy storage and combined cooling heating and power supply through the technologies of liquid carbon dioxide energy storage, Brayton expansion power generation or pressure increasing heating, carbon dioxide variable-capacity stable-pressure storage and gas transmission, and provides a new energy source for safe and long-period operation and large-scale or small-scale application of an energy storage device. An efficient and feasible technical path is provided for'valley shifting and peak filling 'of photovoltaic power, wind power and a power grid, and the method is suitable for various application scenes such as subway stations, large shopping malls, refrigeration houses or large electricity users.
Owner:EDDIE (SUZHOU) SURVEY & DESIGN CONSULTANT CO LTD

Supercritical carbon dioxide energy storage and industrial complementary energy coupling circulation system and control method

The invention discloses a supercritical carbon dioxide energy storage and industrial complementary energy coupling circulation system and a control method, and relates to the technical field of energy storage. The waste heat recovery system performs countercurrent heat exchange with carbon dioxide by using high-temperature flue gas generated by combustion of high / coke / converter gas; and the residual cold recovery system uses condensed water of the power plant for cooling carbon dioxide in each link. The compressed carbon dioxide energy storage system compresses and stores carbon dioxide in a high-pressure storage tank. In the compressed carbon dioxide power generation system, high-pressure carbon dioxide is preheated and heated to drive a high-pressure expansion machine to do work and generate power, the carbon dioxide after doing work is heated to drive a low-pressure expansion machine to do work and generate power, and finally the carbon dioxide is cooled, condensed and liquefied through a cooler and a condenser and then returns to a low-pressure storage tank. According to the system, industrial complementary energy is efficiently utilized, stable energy storage and release are achieved, and the energy utilization efficiency is improved. The problem that defects exist in the aspects of industrial gas efficient utilization and energy storage coupling in the prior art is solved.
Owner:XI'AN PETROLEUM UNIVERSITY

Electrical power generated by carbon dioxide gas pressure letdown

A system includes an inlet pipe, a pressure control valve, a flow-through electric generator, and an outlet pipe. The inlet pipe is connected to a carbon dioxide pipeline that flows carbon dioxide. The pressure control valve is installed on the inlet pipe and is configured to reduce a pressure of the carbon dioxide to a specified pressure. The flow-through electric generator includes a turbine wheel, a rotor, and a stator. The turbine wheel is configured to rotate in response to expansion of the carbon dioxide flowing into an inlet of the turbine wheel and out of an outlet of the turbine wheel. The flow-through electric generator is configured to generate electrical power upon rotation of the rotor within the stator. The outlet pipe is configured to receive the carbon dioxide that has expanded through the flow-through electric generator and flow the carbon dioxide to a carbon dioxide pipeline network.
Owner:SAPPHIRE TECHNOLOGIES INC

Compressed air heat storage system and heat storage method based on gas driving

The invention discloses a compressed air heat storage system and a heat storage method based on gas driving. The compressed air heat storage system comprises a power generator, a plurality of air compressors, a plurality of expansion machines, a heat exchanger, a compressed air storage tank, a high-temperature water storage tank and a low-temperature water storage tank. The multiple air compressors are sequentially connected with the corresponding first heat exchangers, then arranged in series and connected with an air inlet of the compressed air storage tank. The multiple expansion machines are sequentially connected with the corresponding second heat exchangers, then arranged in series and connected with an air outlet of the compressed air storage tank. The first end of the high-temperature water storage tank is connected with the first branch of the first pipeline, the second end is connected with the water outlet end of the first heat exchanger, and the third end is connected with the water inlet end of the second heat exchanger; the first end of the low-temperature water storage tank is connected with the second branch of the first pipeline, the second end is connected with the water inlet end of the first heat exchanger, and the third end is connected with the water outlet end of the second heat exchanger; according to the invention, efficient recovery and reutilization of compression heat are realized.
Owner:BEIJING JINGCHENGKELIN ENVIRONMENTAL PROTECTION TECH +1

Fused salt heat storage and biomass energy storage coupled gas-steam combined cycle power generation system

The invention discloses a fuel gas and steam combined cycle power generation system coupling fused salt heat storage and biomass energy storage, which comprises a fuel gas and steam combined cycle power generation subsystem, a fused salt heat storage and release subsystem and a biomass energy storage system, an outlet of the gas-steam combined cycle power generation subsystem is connected with the fused salt heat storage and release subsystem and the biomass energy storage system, and a smoke outlet of the biomass energy storage system is connected with the gas-steam combined cycle power generation subsystem. And the utilization efficiency of energy and the economical efficiency of the system are improved.
Owner:XIAN THERMAL POWER RES INST CO LTD +1

Heat engine using a liquid-vapor-phase-changing material

The present disclosure provides a solution for a system and a method for converting heat into work. The solution makes use of a nozzle, in which pressurized heat transfer liquid (HTL) and a Liquid-Vapor-Phase-Changing (LVPhC) working fluid is about the same pressure are mixed to form a LVPhC-HTL mixture, which in turn undergoes evaporation and isothermal or quasi-isothermal expansion while flowing in the nozzle that results in acceleration of the mixture. The accelerated mixture is ejected from to thereby rotate a turbine and produce work from the generated kinetic energy. The LVPhC is separated from the mixture and condensed after its ejection from the nozzle and its pressure is elevated back to the working pressure in the nozzle. The present solution exploits the thermodynamic advantages of each phase of the LVPhC.
Owner:TECHNION RES & DEV FOUND LTD +1

Compressed air energy storage and energy saving impact rotation starting system, method, equipment and medium

The invention discloses a compressed air energy storage and energy-saving impact rotation starting system, system and equipment and a medium, and belongs to the technical field of energy-saving impact rotation starting. The method comprises the steps that air is compressed through a compressor and then sent to a cooling heat exchanger to be cooled, and cooled air is obtained; the cooling gas in the cooling heat exchanger is compressed and then conveyed into the first gas storage chamber until the pressure of the first gas storage chamber is at the first rated pressure; cooling gas in the cooling heat exchanger transfers and controls the expansion machine at a second target rotating speed through a buffer module, so that the output power of the generator reaches a first initial power value; air in the first air storage chamber is released by opening the air inlet adjusting valve, and the air flow in the first air storage chamber is controlled until the output power of the generator reaches a first output power value; and adjusting the starting regulating valve according to a preset rate, monitoring instrument data, and finishing starting when the starting regulating valve is in a closed state and the power of the generator is stable. The problem that a traditional expansion machine is large in throttling loss is solved.
Owner:GUIZHOU POWER GRID CO LTD

Coal-fired boiler direct-drive high-temperature molten salt two-stage heat storage power generation heat supply peak regulation system and method

The invention relates to the field of peak regulation of coal-fired power plants, in particular to a coal-fired boiler direct-drive high-temperature molten salt two-stage heat storage power generation heat supply peak regulation system and method, and the system comprises a coal-fired boiler unit which comprises a coal-fired boiler capable of generating flue gas carrying heat and a flue gas pipeline allowing flue gas to circulate; the fused salt heat storage unit comprises a fused salt storage vessel such as a fused salt tank capable of containing fused salt and a fused salt pipeline allowing the fused salt to circulate, and the fused salt can exchange heat with flue gas in the flue gas pipeline so as to store heat; the one or more power generation units are used for generating power through part of the heat stored by the fused salt heat storage unit, and under the condition that the multiple power generation units are arranged, the multiple power generation units can be independently adjusted; and the heat supply unit is used for supplying heat by using part of the heat stored by the fused salt heat storage unit. With such a configuration, it is possible to achieve power generation and heat supply by coupling the coal-fired boiler and the two-stage molten salt.
Owner:BEIJING UNIV OF CIVIL ENG & ARCHITECTURE

Coal-fired unit energy storage coupling carbon capture system and method based on calcium circulation

The invention discloses a coal-fired unit energy storage coupling carbon capture system and method based on calcium circulation, and aims to realize efficient and cheap capture of CO2 in flue gas while performing energy storage peak regulation of a coal-fired unit. The system comprises main equipment such as a calcination / heat absorption reactor, a pressurized carbonation / heat release reactor, a CaCO3 storage tank, a CaO storage tank and a CO2 storage tank, and auxiliary equipment such as a gas booster compressor, residual pressure power generation equipment, an electric heating module, a dust remover, a gas cooler, a solar gas heater and a smoke-CO2 heat exchanger. According to the method, electric energy of green electricity or valley electricity and heat energy of high-temperature flue gas of a boiler are converted into chemical energy by adopting the cyclic calcination characteristic of CaCO3-based particles and stored in the CaCO3-based particles, and the chemical energy is released again in the form of heat energy when a unit supplies heat to the outside or a power grid uses electricity at the peak. The system has high operation flexibility and economical efficiency.
Owner:SOUTHEAST UNIV

A method and system for grading and recycling waste heat of kiln flue gas

The application discloses a kind of kiln flue gas waste heat grading circulation power generation method and system, adopt multi-stage purification and temperature utilization combination, first, kiln flue gas is carried out component analysis and desulfurization purification treatment, establish layered purification chain and identify acid dew point area, form safe purification flue gas area by material adaptability evaluation and corrosion control measure;Then, temperature gradient analysis and temperature field reconstruction are carried out to purified flue gas, establish heat grade distribution mechanism and form cascade thermal energy flow, realize the complementary use of different temperature section heat source;Further, build the cascade power generation system of water vapor main cycle and organic working medium auxiliary cycle, integrate magnetic suspension bearing technology to improve auxiliary cycle power generation efficiency;Through heat matching degree monitoring and mismatch detection, establish heat balance parameter and optimize circulation network;Finally, build energy transfer matrix, through generator coupling analysis and speed coordination control, form distributed power generation configuration and complete stable electric energy output, realize the efficient use of waste heat.
Owner:SHANGHAI ENVIRONMENT PROTECTION GROUP +1

Thermal chemical heat storage and carbon capture system for thermal power plant

The thermal chemical heat storage and carbon capture system comprises a coal-fired boiler, a calcination reactor and a carbonation reactor, the calcination reactor extracts high-temperature flue gas from the front wall of a hearth of the coal-fired boiler, the high-temperature flue gas drives CaCO3 in the calcination reactor to be decomposed into CaO and CO2, and heat storage is achieved; the reacted flue gas is pumped back into a tail flue of the coal-fired boiler, and the flue gas flow required by the reaction is controlled through a flow control valve on a pumping pipeline; caO generated by the calcination reaction can enter the carbonation reactor in the heat release stage, a heat release carbonation reaction is carried out, heat is released, CaCO3 obtained after the heat release reaction returns to the calcination reactor through a pipeline to serve as a reaction raw material, and CO2 obtained after the heat release reaction is output to a heat supply system. The integration of heat storage, heat release and carbon capture is realized by utilizing calcium-based material circulation, and the peak regulation capacity and the carbon capture economy of the coal-fired unit are remarkably improved.
Owner:DONGFANG ELECTRIC (CHENGDU) INNOVATION RES CO LTD +1

Constant-pressure multi-stage flexible compressed air energy storage system and operation strategy thereof

The invention discloses an isobaric multi-stage flexible compressed air energy storage system and an operation strategy thereof, relates to the technical field of compressed air energy storage, solves the problems that an air storage device is poor in universality and cannot fundamentally achieve efficient and flexible operation under variable working conditions, and comprises a multi-stage compressor unit, a multi-stage expansion unit and an air storage unit. The multi-stage compressor unit is composed of a first compressor unit, a second compressor unit and a third compressor unit, and the multi-stage expansion unit is composed of a first expansion unit, a second expansion unit and a third expansion unit. Through the isobaric gas storage technology, the non-design working condition caused by the pressure change of the storage tank is eliminated, the compressor and the turbine always work near the optimal pressure ratio, through the multi-machine parallel flexible combination, each device can operate at an efficient point close to the rated power of the device, the low-efficiency problem that a large horse pulls a small trolley in a single large device is avoided, and the working efficiency of the whole device is improved. And the overall efficiency of the system is greatly improved.
Owner:INNER MONGOLIA UNIV OF SCI & TECH

Storage unit, control method, and system for carbon dioxide gas-liquid-phase-change energy storage system

A storage unit for an energy storage system is provided with an energy storage container for storing gaseous carbon dioxide and liquid carbon dioxide, a condenser connected to the energy storage container and used for condensing gaseous carbon dioxide into liquid carbon dioxide and an energy-storage pressure-maintaining flow path forming a closed-loop connection with the energy storage container and the condenser; and in an energy storage stage of the energy storage system and in an interval time period of energy storage and energy release, gaseous carbon dioxide in the energy storage container can flow into the condenser via the energy-storage pressure-maintaining flow path, to be condensed into liquid carbon dioxide, and then flow back to the energy storage container, so as to stabilize, in the energy storage stage, the pressure of the energy storage container in a design pressure range.
Owner:EXA ENERGY TECH (SHENZHEN) CO LTD

Waste heat boiler power generation optimization method of gas-steam combined generator set

The invention discloses a waste heat boiler power generation optimization method for a gas-steam combined generator set, and the method comprises the steps: deeply cooling the exhaust gas temperature to below 75 DEG C through a multi-stage anti-corrosion heat exchange device, and carrying out the heat exchange through an intelligent control heat medium water circulation loop; the recycled heat is distributed to natural gas preheating, refrigeration, heat supply, air preheating and the like according to the priority in a cascade mode. According to the system, efficient deep recovery and comprehensive utilization of flue gas waste heat are achieved, the energy efficiency and economical efficiency of the unit are remarkably improved, and safe and reliable operation of the system is ensured through intelligent anti-corrosion control.
Owner:华能海南发电股份有限公司南山电厂

Flue gas low heat recovery system based on reverse brayton cycle heat pump energy storage and control method thereof

The present application relates to a flue gas low-heat recovery system based on reverse Brayton cycle heat pump energy storage and a control method thereof, and belongs to the technical field of heat pump energy storage peak shaving of heat engine units. The system comprises a boiler module, a high-heat cycle module and a low-heat cycle module, and realizes the hierarchical utilization of high-grade and low-grade flue gas low-heat through collaborative operation. The flue gas of the boiler module is coupled with the high-heat cycle module through a molten salt heat exchanger, and the low-heat cycle module utilizes the low-heat of the flue gas to generate power through an organic Rankine cycle. The high-heat cycle module stores electric energy and thermal energy during off-peak hours and releases energy during peak hours, thereby improving the peak shaving capacity of the system. The present application realizes the deep integration of efficient recovery of flue gas low-heat and energy storage technology, significantly improves the energy utilization efficiency, system flexibility and economy, and has environmental protection and sustainable development benefits.
Owner:湖南省湘电试验研究院有限公司 +1

Ship waste heat utilization system and energy recovery method

The invention discloses a ship waste heat utilization system and an energy recovery method, and the method comprises the steps: monitoring and collecting waste heat parameters in real time through a multi-sensor array, processing data fluctuation through a self-adaptive filtering algorithm, and carrying out the quality evaluation in combination with an effective energy model; according to the real-time effective energy value, the fluctuation index and the host load, the waste heat resource allocation priority is dynamically adjusted, and a multi-mode waste heat resource allocation strategy is synchronously formulated based on the output predicted by the extended Kalman filtering algorithm; a full-state prediction model based on an ORC system is constructed, and a prediction-optimization-compensation adaptive control framework is established; a heat charging and discharging sequence is optimized based on model prediction control, and energy loss is minimized; according to the method, performance indexes of the whole waste heat utilization system are monitored, control parameters are optimized by using a reinforcement learning algorithm based on real-time data, the optimized parameters are applied to the system, and closed-loop control is performed. The problem of insufficient waste heat utilization is solved, energy loss is remarkably reduced, and the waste heat utilization efficiency of the system is improved.
Owner:ZHEJIANG ENERGY MARINE ENCIRONMENTAL TECH CO LTD

Ship main and auxiliary machine waste heat organic Rankine cycle power generation method and device

The invention discloses a ship main and auxiliary machine waste heat organic Rankine cycle power generation method and device. Exhaust temperature and working condition data are collected, and the start-stop threshold value of waste heat recovery is determined by analyzing the temperature change characteristic and the working condition stability rule; detecting the on-way temperature distribution of the pipeline, identifying a region with serious heat dissipation loss and a heat attenuation turning position, and drawing a heat distribution map; circulating pressure and a phase change state are monitored, an operation deviation type is identified, and self-adaptive adjustment parameters are generated through deviation degree quantization and compensation intensity mapping; checking in combination with heat distribution characteristics and operation deviation identifiers, extracting available gain opportunities, dividing strong and weak association through parameter coupling analysis, implementing cooperative enhancement, and establishing a multi-parameter linkage adjustment sequence; and the working and heat release processes are analyzed, fluctuation identification and reverse suppression are performed on working power, power optimization is implemented in combination with heat release adjustment, and finally stable power generation power meeting grid connection requirements is generated.
Owner:CONTIOCEAN ENVIRONMENT TECHNOLOGY GROUP CO LTD