小管径空调冷凝器数值模拟及流路设计  

CIRCUIT DESIGN AND PERFORMANCE SIMULATION OF A SMALL-DIAMETER TUBE CONDENSER OF AN AIR CONDITIONER

作　　者：丁炜堃[1] 邓斌[1] 陶文铨[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点试验室,陕西西安710049

出　　处：《工程热物理学报》2009年第8期1389-1392,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究(973)项目(No.G2007CB206902)

摘　　要：本文基于传热单元数法,建立了空调冷凝器的稳态分布参数模型。运用该模型,以大管径(φ7 mm)空调冷凝器性能为基准,进行小管径(φ5 mm)空调冷凝器流路设计。研究表明通过增加并联支路数目,适当缩短各支路长度等手段,可以使小管径冷凝器管内制冷剂压降增加过大的问题得到有效控制,在实现小管径冷凝器性能接近大管径冷凝器的同时,铜耗量可大大降低。Based on s-NTU method, a steady distributed-parameter model of a condenser is established. By using this model and taking the performance of a Ф7 mm tube condenser as a standard, Ф5 mm tube condenser circuits are designed. The research results indicate that refrigerant pressure drop of the small-diameter condenser can be effectively decreased by adding more branches and properly reducing the branch length. While the small-diameter tube condensers have the heat transfer performance of the corresponding large-diameter tube condensers, the copper consumption of each small-diameter tube condenser is greatly reduced.

关 键 词：小管径 冷凝器 流路布置 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]