Cryogenic liquefied air energy storage system capable of improving efficiency through circulating compressor

A technology of circulating compressors and liquefied air, applied in mechanical equipment, steam engine devices, machines/engines, etc., can solve the problems of low cycle energy storage efficiency and high operating costs, and achieve increased heat storage temperature, system efficiency, and larger The effect of success

Inactive Publication Date: 2016-11-09
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
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  • Abstract
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  • Application Information

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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

Method used

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  • Cryogenic liquefied air energy storage system capable of improving efficiency through circulating compressor

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Embodiment 1

[0031] This embodiment provides a cryogenic liquefied air energy storage system that utilizes a circulating compressor to improve efficiency, the following combination figure 1 The energy storage system of this embodiment is described in detail, which includes:

[0032] The air compressor unit 1 includes several stages of air compressors to compress the 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 6 collects the cold energy generated during the gasification o...

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Abstract

The invention provides a cryogenic liquefied air energy storage system capable of improving efficiency through a circulating compressor. The system is arranged in the designable range of the circulating compressor, and the outlet pressure of the circulating compressor is increased to the greatest extent. Due to the fact that the outlet pressure of the circulating compressor is increased, the heat storage temperature can be increased, the refrigerating capacity, of unit mass, of a refrigeration expander is improved, the air outlet work, of unit mass, of a liquid expander is improved, and accordingly the system efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of energy storage of cryogenic liquefied air, in particular to a cryogenic liquefied air energy storage system that utilizes a circulating compressor to improve efficiency. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K7/02F01K27/00F04B35/04F04B41/02F04B25/00F04B39/06
CPCF01K7/02F01K27/00F04B25/00F04B35/04F04B39/06F04B41/02Y02E60/16
Inventor 王乐宋洁赵波徐桂芝邓占锋杨岑玉金翼胡晓宋鹏翔李志远梁立晓
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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