Compressed air energy storing system for cold and heat power supply

A technology of compressed air energy storage and cogeneration of cooling, heating and power, which is applied in fuel systems, refrigerators, refrigeration and liquefaction, etc., and can solve problems such as low utilization rate of wind energy, insufficient energy utilization, and low efficiency of compressed air energy storage. Achieve fuel saving, good comprehensive utilization value, and good load performance

Active Publication Date: 2015-06-03
XI AN JIAOTONG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a compressed air energy storage system for combined cooling, heating and power supply to sol

Method used

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  • Compressed air energy storing system for cold and heat power supply
  • Compressed air energy storing system for cold and heat power supply
  • Compressed air energy storing system for cold and heat power supply

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[0021] Such as figure 1 As shown, the compressed air energy storage system for combined cooling, heating and power of the present invention includes: compressor 1, 2, inter-stage cooler 3, after cooler 4, high-pressure air storage chamber 5, heat exchanger 6, 10, turbine Expanders 7, 8, gas internal combustion engines 9, lithium bromide refrigerators 11, combustors 15, 16, etc. Compressor units 1 and 2 are connected in series and coaxially and are driven by the same compressor motor 12. Compressor 1 is equipped with inter-stage cooler 3, while compressor 2 is equipped with after-cooler 4, inter-stage cooler 3 and after-cooling The device 4 is connected in parallel. The turbine expanders 7 and 8 are connected in series to jointly drive the generator 13 to generate electricity. When the inlet temperature of the two turbine expanders needs to be increased, the combustion of natural gas as fuel can be added to the inlet sides of the turbine expanders 7, 8 respectively. The burners...

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Abstract

The invention comprises a compressed air energy storing system for cold and heat power supply. The system comprises a compressor, an air storage tank, a turbine expander, a gas engine and a refrigerating machine. During low power consumption, surplus power drives the compressor to store the air into the air storage tank in a high pressure manner, and the intercooler of the compressor recovers the compression heat; during high power consumption, the high-pressure air of the air storage tank is preheated through a heat regenerator to enter the turbine expander so as to work and drive a generator to generate power, the exhaust gas of the outlet of the turbine expander enters the gas engine to mix with the natural gas and burn so as to drive the generator to generate power secondarily, the heat of the high-temperature flue gas exhausted by the gas engine is exchanged through the heat regenerator, and the flue gas enters the refrigerating machine with the engine cylinder sleeve circulating water and water heated by the intercooler so as to drive the refrigerating machine to supply heat or cold. According to the system, distribution type energy and intermittent type energy are combined, the renewable energy is utilized fully, the system waste heat is utilized effectively, and the system has the advantages of high energy converting efficiency and large energy storage capacity.

Description

Technical field [0001] The invention relates to a distributed electrical energy physical energy storage system, in particular to a compressed air energy storage system. Background technique [0002] With the increasing depletion of traditional fossil energy, the use of renewable energy has received more and more attention. In my country, wind power has become the third largest source of electrical energy after thermal power and hydropower. However, the inherent randomness and volatility of wind energy and other renewable energy have brought huge challenges to the development of new energy sources in my country. Energy storage technology can effectively improve the power grid's peak shaving capacity, thereby improving the safety and stability of grid operation and the utilization of wind turbines, reducing wind power curtailment, increasing the proportion of clean energy generation, and optimizing the energy structure. [0003] So far, electric energy storage technologies can be d...

Claims

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Application Information

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IPC IPC(8): F04B41/02F04B41/06F04B35/04F01D15/10F01K23/14F02B43/10F25B29/00
CPCY02E60/16Y02T10/12Y02T10/30
Inventor 王焕然姚尔人席光
Owner XI AN JIAOTONG UNIV
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