过冷度对直热式空气源热泵热水器性能的影响  

The Sub-Cooling Degree Influence on Performance of Instantaneous Air-Source Heat Pump Water Heater

作　　者：张娟[1] 张宝怀[1] 

机构地区：[1]东南大学能源与环境学院

出　　处：《建筑热能通风空调》2010年第1期13-15,63,共4页Building Energy & Environment

摘　　要：本文以直热式空气源热泵热水器中的套管式冷凝器为研究对象,讨论了在设计工况下,由于过冷度变化而引起的冷凝器过热区、两相区和过冷区的传热温差、传热系数、换热量、换热面积以及COP相对值的变化,为研究不同过冷度下冷凝器的传热性能提供了方便而有效的方法。The double-pipe condenser of instantaneous air-source heat pump water heater was taken as the research object. According to certain design criteria, the variations of heat transfer temperature difference, heat transfer rate, heat transfer coefficient, heat transfer area, and the relative value of COP in the superheating zone, the double phase zone and the sub-cooling zone were discussed with the variation of sub-cooling degree of condenser. A convenient and effective method was provided to research the heat transfer performance of condenser at different sub-cooling degrees.

关 键 词：套管式冷凝器 过冷度 传热温差 换热量 换热面积 

分 类 号：TU822.2[建筑科学]