Title:
NORMAL-TEMPERATURE LIQUID COMPRESSED CARBON DIOXIDE MIXED WORKING FLUID ENERGY STORAGE SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2023/193486
Kind Code:
A1
Abstract:
The present invention provides a normal-temperature liquid compressed carbon dioxide mixed working fluid energy storage system and method. One outlet of a compressor is sequentially connected to a hot side inlet of an energy storage heat exchanger, and the other outlet of the compressor is connected to a hot side inlet of a heat regenerator; a hot side outlet of the energy storage heat exchanger is sequentially connected to hot side inlets of a high-pressure storage tank, an energy release heat exchanger, and a cooler; a cold side outlet of the heat regenerator is connected to an inlet of the compressor; an outlet of a regenerator is sequentially connected to inlets of the energy storage heat exchanger, a heat accumulator, a heat pump, and the regenerator; and the heat pump is separately connected to the cooler and the energy release heat exchanger. According to the energy storage system, after a liquid low-pressure mixed working fluid is throttled, depressurized, heated, and gasified, the compressor is driven by surplus electric power to compress a gaseous working fluid, the compression work of the unit working fluid can be increased, and the flow of the working fluid is reduced, so as to reduce the storage amount of the working fluid, thereby reducing the size of a storage tank and improving the energy storage density.
Inventors:
ZHANG XUWEI (CN)
LI HONGZHI (CN)
ZHANG LEI (CN)
JIANG SHIXI (CN)
WU SHUAISHUAI (CN)
ZHANG YIFAN (CN)
YAO MINGYU (CN)
LI HONGZHI (CN)
ZHANG LEI (CN)
JIANG SHIXI (CN)
WU SHUAISHUAI (CN)
ZHANG YIFAN (CN)
YAO MINGYU (CN)
Application Number:
PCT/CN2022/142675
Publication Date:
October 12, 2023
Filing Date:
December 28, 2022
Export Citation:
Assignee:
XIAN THERMAL POWER RES INST CO (CN)
International Classes:
H02J15/00; F01K25/10
Foreign References:
| CN114709934A | 2022-07-05 | |||
| CN113914952A | 2022-01-11 | |||
| CN114111413A | 2022-03-01 | |||
| CN111140298A | 2020-05-12 | |||
| CN107035447A | 2017-08-11 | |||
| CN109026241A | 2018-12-18 | |||
| US20200386155A1 | 2020-12-10 |
Attorney, Agent or Firm:
BEIJING ZZFY INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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