Micron-sized water spray-cooled quasi-isothermal compression for compressed air energy storage

•Based on the measurement of pressure and volume, the transient temperature of air is obtained.•The heat transfer behaviour of water spray and air is investigated.•With injection of water spray, the compression efficiency is improved. Compressed air energy storage (CAES) has emerged as an effective...

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Veröffentlicht in:	Experimental thermal and fluid science 2018-09, Vol.96, p.470-481
Hauptverfasser:	Guanwei, Jia, Weiqing, Xu, Maolin, Cai, Yan, Shi
Format:	Artikel
Sprache:	eng
Schlagworte:	Adiabatic Adiabatic flow Air Air temperature Batteries Compressed air Compressed air energy storage Compression Compression ratio Cooling Electric contacts Electric power Electric power generation Electricity Electricity pricing Energy storage Heat transfer Heavy metals Isothermal compression Service life Storage batteries Storage capacity Temperature measurement Time dependence Water injection Water pollution Water spray
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Zusammenfassung:	•Based on the measurement of pressure and volume, the transient temperature of air is obtained.•The heat transfer behaviour of water spray and air is investigated.•With injection of water spray, the compression efficiency is improved. Compressed air energy storage (CAES) has emerged as an effective large-scale energy storage technology. This storage system can have many urban applications based on the time-dependent price of electricity. In China, the electric power companies employ batteries to store electricity when the price drops and generate electricity when the price increases. When compared with storage batteries, CAES systems have larger storage capacity (100 MWh, battery
ISSN:	0894-1777 1879-2286
DOI:	10.1016/j.expthermflusci.2018.03.032