R22和R407C在水平微肋管内冷凝传热与压降的性能分析  

Numerical simulation of condensation heat transfer and pressure-drop performance of R22 and R407C in horizontal microfin tube

作　　者：罗昔联[1] 王沣浩[1] 孟祥兆[1] 吴志勇[1] 

机构地区：[1]西安交通大学

出　　处：《制冷与空调》2006年第6期13-16,共4页Refrigeration and Air-Conditioning

摘　　要：根据两相流动换热理论,建立纯制冷剂和非共沸混合制冷剂R407C在微肋管内冷凝的稳态分布参数模型。在此基础上用分布参数法求解控制方程,得出在不同流量、不同干度下,R22和R407C在微肋管内的冷凝传热性能,同时还得出它们在微肋管内流动的压降。本模型可用于分析R22及R407C在系统中的整体换热性能,为冷凝器的优化设计、制冷系统的匹配提供依据。According to two-phase flow theories, a steady distributed parameters model of pure and non-azeotropic refrigerants condensation in microfin tube. Based on this model, the control equations were solved. And the condensation heat transfer coefficient and pressure drop of these two kinds of refrigerants in microfin tubes were obtained. The model established is useful and valuable for the condenser＇s optimization design and matching of refrigeration system.

关 键 词：微肋管 稳态分布参数模型 冷凝 

分 类 号：TB64[一般工业技术—制冷工程]