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Heat compensation type compressed air energy storage and supercritical carbon dioxide energy release coupling system

A technology of compressed air energy storage and coupling system, which is applied in heat storage equipment, indirect heat exchangers, heat exchanger types, etc., can solve problems such as low density, and achieve the effects of light weight, smooth load and effective utilization

Pending Publication Date: 2022-03-08
SHANGHAI POWER EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But air is still less dense even after being compressed, requiring a large gas storage device

Method used

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  • Heat compensation type compressed air energy storage and supercritical carbon dioxide energy release coupling system
  • Heat compensation type compressed air energy storage and supercritical carbon dioxide energy release coupling system
  • Heat compensation type compressed air energy storage and supercritical carbon dioxide energy release coupling system

Examples

Experimental program
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Effect test

Embodiment 1

[0065] This embodiment provides a heat supplementary compressed air energy storage and supercritical carbon dioxide energy release coupling system, such as figure 1 As shown, the coupling system includes a heat recovery device 1, a compression device 2, a heat supplement device 3, a heat exchange device 4, a turbine 5, an electric motor, a first storage tank 6, a second storage tank 7, CO 2 Heat exchange device 8, CO 2 Turbine 9, the first CO 2 Regenerator 10, second CO 2 Regenerator 11, CO 2 Chiller 12 and CO 2 Main compressor 13.

[0066] The turbine 5 is coaxially connected with the compression device 2, the outlet of the compression device 2 is connected with the inlet of the heat supplement device 3, the outlet of the heat supplement device 3 is connected with the first inlet of the heat exchange device 4 The first outlet of the heat exchange device 4 is connected to the second inlet of the heat recovery device 1, the first outlet of the heat recovery device 1 is con...

Embodiment 2

[0071] This embodiment provides a heat supplementary compressed air energy storage and supercritical carbon dioxide energy release coupling system, such as figure 2 As shown, the difference between the coupling system described in this embodiment and the coupling system described in Embodiment 2 is that this implementation adds CO 2 Compressor 14 is bypassed. The second CO 2 The second outlet of the recuperator 11 is connected to the CO 2 Bypass the inlet connection of compressor unit 14, the CO 2 The outlet of the bypass compressor 14 is connected to the first CO 2 The second inlet of the heat recovery device 10 is connected.

[0072] The heat supplementary compressed air energy storage and supercritical carbon dioxide energy release coupling system provided by the present invention is used for energy storage and energy release. The energy storage method includes the following steps: the inlet of the heat recovery device 1 is connected to the environment, and the air ent...

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Abstract

The invention relates to a heat compensation type compressed air energy storage and supercritical carbon dioxide energy release coupling system. The coupling system comprises a heat compensation type compressed air energy storage sub-circulation system and a supercritical carbon dioxide energy release sub-circulation system. The heat compensation type compressed air energy storage sub-circulation system comprises a heat return device, a compression device, a heat compensation device, a heat exchange device, a turbine and a heat storage assembly. The supercritical carbon dioxide energy release sub-circulation system comprises a CO2 turbine, a CO2 heat regeneration assembly, a CO2 cooling device, a CO2 main compression device, a CO2 bypass compression device, a CO2 heat exchange device and a heat storage assembly. The heat compensation type compressed air energy storage is in open circulation arrangement, high-pressure air directly acts in a turbine and then is discharged into the environment, a storage tank is not needed for storage, and energy is stored in the form of heat energy. A photo-thermal heat compensation device is adopted, so that the energy storage efficiency is improved; the supercritical carbon dioxide energy release sub-circulation system has the advantages of being small in size, light in weight, small in heat loss and high in conversion efficiency.

Description

technical field [0001] The invention belongs to the technical field of new energy power generation, and in particular relates to a heat supplementary compressed air energy storage and supercritical carbon dioxide energy release coupling system. Background technique [0002] Under the double pressure of the increasing scarcity of traditional energy sources and the deteriorating environment, the development of new energy sources has been paid attention to, and the scale of its power generation is increasing day by day. At present, wind power, solar power and other new energy power generation are subject to natural conditions, fluctuating and intermittent, and difficult to adjust and control. Large-scale grid connection will affect the safe and stable operation of the power grid. Energy storage technology can effectively realize demand-side management, eliminate peak-to-valley difference between day and night, and smooth load. It can not only effectively utilize power equipment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K25/10F01K7/32F02C1/00F01D15/08F04B35/04F04B35/02F28D20/00
CPCF01K25/103F01K7/32F02C1/00F01D15/08F04B35/04F04B35/00F28D20/00F28D2020/0047Y02E60/14
Inventor 徐望人赵峰史进渊张成义张天博李振亚王宇轩祝自芳
Owner SHANGHAI POWER EQUIP RES INST