Natural Working Fluids and Application I
点击进入第22届国际制冷大会直播页面>>
本场研讨会主讲嘉宾之一
点击此处查看全部新闻图片
8月24日上午8：30-12：30，主题为"Natural Working Fluids and Application I"在北京国际会议中心305-B会议室召开。
演讲内容摘要：
Because of environmental issues caused by CFC,HCFC or HFC refrigerants,new alternative refrigerants have gained a significant attention. In-tube evaporation heat transfer characteristics of CO2/propane mixtures were experimentally investigated and analyzed at several conditions of mass fluxes,heat fluxes,compositions of CO2/propane refrigerant mixtures and tube geometry. Heat transfer coefficient data during evaporation process of CO2/propane mixtures were measured for 5 m long smooth and micro-fin tubes with outer diameters of 5 mm. The tests were conducted at mass fluxes of 318 to 530 kg/m2s,heat fluxes of 12 to 20 kW/m2 and for several mixture compositions (100/0,75/25,50/50,25/75,100/0 by wt% of CO2/propane). The differences of heat transfer characteristics between smooth and micro-fin tubes for various compositions of CO2/propane refrigerant mixtures and the effect of mass flux,heat flux,and evaporation temperature on enhancement factor (EF) and penalty factor (PF) were presented.
第22届国际制冷大会于2007年8月21日在北京国际会议中心隆重召开，会议为来自世界各地的科学家和工程师提供一个互相交流和分享各自成功经验的机会，以使制冷技术在今后几十年保持持续快速的发展。
慧聪网全程直播。版权所有，如需转载，请写明来源出处，并加相关链接。
