技术中心

【英文篇名】 Influence of nonazeotropic refrigerant mixtures on heat exchangers of water cooling chiller units 【作者中文名】 王随林; 王瑞祥; 李俊明; 【作者英文名】 By Wang Suilin ★; Li Junming and Wang RuixiangBeijing Institute of Architectural and Civil Engineering; China; 【作者单位】 北京建筑工程学院; 清华大学; 【文献出处】 暖通空调, Hv 冷水机组; 蒸发器; 冷凝器; 传热系数; 【英文关键词】 nonazeotropic refrigerant; water chiller units; evaporator; condenser; heat transfer coefficient; 【摘要】 针对R2 2近期替代物多为非共沸混合制冷剂的现实和替代工作开展的需要 ,分析了采用非共沸混合制冷剂代替单组分工质后凝结和沸腾换热相界面传质阻力对蒸汽压缩式冷水机组蒸发器、冷凝器传热性能的不利影响 ,给出了由此引起的传热系数降低程度的估算。基于分析结果 ,对采用非共沸混合制冷剂的冷水机组换热器选型及设计进行了讨论。 【英文摘要】 In view of that most of the refrigerants for substituting R22 in recent years are nonazeotropic refrigerant mixtures, analyses the heat transfer coefficient reduction of heat exchangers used for water cooling chiller units caused by the mass transfer resistance on the vapor-liquid interface and the effect of the heat transfer based on both condensation and evaporation of the total heat transfer coefficient process compared with that of the pure refrigerants such as R22, and the reduction of total heat trans...