Title:
MULTISTAGE-COMPRESSION ENERGY STORAGE APPARATUS AND METHOD BASED ON CARBON DIOXIDE GAS-LIQUID PHASE CHANGE
Document Type and Number:
WIPO Patent Application WO/2022/166392
Kind Code:
A1
Abstract:
An energy storage apparatus and method based on carbon dioxide gas-liquid phase change. The energy storage apparatus based on carbon dioxide gas-liquid phase change comprises a gas storage bank (100); a liquid storage tank (200); an energy storage assembly (300), provided between the gas storage bank (100) and the liquid storage tank (200), wherein the energy storage assembly (300) comprises a condenser (350) and at least two compression energy storage portions, and the compression energy storage portions comprise compressors (310, 330) and energy storage heat exchangers (320, 340); an energy release assembly (400), provided between the gas storage bank (100) and the liquid storage tank (200), wherein the energy release assembly (400) comprises an evaporator (410), an energy release cooler (460), and at least one expansion energy release portion, and the expansion energy release portion comprises expanders (430, 450) and energy release heat exchangers (420, 440); and a heat exchange assembly (500), comprising a cool storage tank (510), a heat storage tank (520), and heat recovery heat exchangers (540, 550), wherein the cool storage tank (510) and the heat storage tank (520) form a heat exchange circuit between the energy storage heat exchangers (320, 340) and the energy release heat exchangers (420, 440), a heat exchange medium can flow in the heat exchange circuit, and at least one of the condenser (350), the energy release cooler (460), and the heat recovery heat exchangers (540, 550) is connected to the evaporator (410). When energy is stored and released by means of the apparatus, energy waste can be reduced, and the utilization rate of the energy is improved.
Inventors:
XIE YONGHUI (CN)
WANG QIN (CN)
SUN LEI (CN)
WANG YUQI (CN)
ZHANG DI (CN)
GUO YONGLIANG (CN)
WANG XIAOYONG (CN)
YANG FENG (CN)
WANG QIN (CN)
SUN LEI (CN)
WANG YUQI (CN)
ZHANG DI (CN)
GUO YONGLIANG (CN)
WANG XIAOYONG (CN)
YANG FENG (CN)
Application Number:
PCT/CN2021/136504
Publication Date:
August 11, 2022
Filing Date:
December 08, 2021
Export Citation:
Assignee:
EXA ENERGY TECH SHENZHEN CO LTD (CN)
International Classes:
F28D20/02; F01K25/10; F24S20/40; F25B9/00; F25B39/00; F25B41/31
Foreign References:
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| CN111648833A | 2020-09-11 | |||
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| CN111749743A | 2020-10-09 | |||
| CN108562081A | 2018-09-21 | |||
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| CN103452612A | 2013-12-18 | |||
| CN109826682A | 2019-05-31 | |||
| US20190063685A1 | 2019-02-28 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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