H2O REFRIGERANT: EXPLOITATION OF DISPERSED WATER DROPLETS
To cope with the mandates imposed by the Montreal and the Kyoto Protocols, halogenated refrigerants will eventually be phased-out. H2O, a natural working fluid which is environmental-friendly, chemically non-corrosive, non-flammable, and physiologically harmless, can be exploited as a high-performance refrigerant in the 4～-25℃ temperature range. The successful operation of the water refrigeration system is based on the fact that the evaporation rate of the refrigerant is not controlled thermodynamically but kinetically. The refrigeration performance of micron-sized water droplets in a reduced pressure environment has been successfully demonstrated. A testing embodiment could be cooled down from room temperature to –20℃ within 6 minutes, where tap water at a flow rate of 80 mL/min was dispersed into micron-sized droplets by the liquid jet atomization technique. The exploitation of the water refrigerant in replacement of those with environmental and safety concerns is highly expected.
Kuomei CHEN
Department of Chemistry, National Sun Yat-sen University, 70 Lien-hai Rd. Kaohsiung, 804, Taiwan, China
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）