A cryogenic liquid air energy storage system that recycles waste heat
A technology of liquid air and energy storage system, which is applied in the direction of liquid variable displacement machinery, piston pumps, machines/engines, etc. It can solve the problems of high operating cost and low efficiency of circulating energy storage, and achieve the improvement of internal energy, effective utilization, The effect of improving work efficiency
Active Publication Date: 2018-10-09
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +3
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Problems solved by technology
[0003] However, the existing cryogenic liquefied air energy storage system still has the following defects: the cryogenic liquefied air energy storage system is easily affected by many factors such as environment, equipment, and energy loss, resulting in low cycle energy storage efficiency and high operating costs. High, so it is necessary to provide a high-efficiency, low-cost cryogenic liquid air energy storage system
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Embodiment 1
[0031] This embodiment provides a cryogenic liquid air energy storage system for circulating heat, the following combination figure 1 The energy storage system of this embodiment is described in detail, which includes:
[0032] Air compressor unit, including several stages of air compressors, to compress low-temperature and low-pressure air into high-temperature and high-pressure gaseous air;
[0033] The heat energy recovery device 3 collects the heat energy generated during the air compression process;
[0034] The liquid air storage tank 4 stores the high-temperature and high-pressure liquid air;
[0035] The gasification device 5 is used to gasify the high-temperature and high-pressure liquid air into high-temperature and high-pressure gaseous air, and receive the heat energy stored in the heat energy recovery device 3;
[0036] The cold energy recovery device collects the cold energy generated during the gasification of liquid air into gaseous air, and releases the cold...
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The invention provides a cryogenic liquid air energy storage system recycling waste heat. According to the cryogenic liquid air energy storage system, after an expansion unit 7 is heated through an interstate heater, much waste heat is generated, and generally, storage and utilization of waste heat cause severe waste; and in the embodiment, gaseous air at an outlet of a gasification device 5 is heated through utilizing the waste heat, so that the internal energy of the gaseous air is improved, the work efficiency of the expansion unit 7 is improved, and the waste heat is effectively utilized.
Description
technical field [0001] The invention relates to the technical field of energy storage of cryogenic liquefied air, in particular to a cryogenic liquid air energy storage system for circulating heat. Background technique [0002] Cryogenic liquefied air energy storage technology refers to the use of electric energy for compressed air during the low load period of the grid, and the high-pressure sealing of the air in abandoned mines, subsidence subsea gas storage tanks, caves, expired oil and gas wells or newly built gas storage wells. The energy storage method releases compressed air during the peak period to drive the steam turbine to generate electricity. The liquid air energy storage system has the advantages of large energy storage capacity, long energy storage period, small footprint and does not depend on geographical conditions. During energy storage, the electric energy compresses, cools and liquefies the air, and at the same time stores the heat energy released during...
Claims
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IPC IPC(8): F01K7/02F01K27/00F04B35/04F04B41/02F04B25/00F04B39/06
CPCF01K7/02F01K27/00F04B25/00F04B35/04F04B39/06F04B41/02Y02E60/16
Inventor 赵波邓占锋徐桂芝杨岑玉王乐宋洁金翼宋鹏翔胡晓李志远梁立晓
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD