来流不均匀性对冷凝器性能影响的数值研究  

Numerical Investigation of Condensers with non-uniform air distribution

作　　者：邓斌[1] 陶文铨[1] 余汪洋[2] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,西安710049 [2]金龙精密铜管集团股份有限公司传热技术研究所,上海200135

出　　处：《制冷与空调（四川）》2007年第3期1-6,共6页Refrigeration and Air Conditioning

摘　　要：基于相关文献提出的冷凝器分布参数模型,运用该模型分析了不同来流分布、不同冷媒流量、不同流程布置以及不同换热管排数时来流不均匀性对冷凝器性能的影响,得出了一些实用性的结论。研究表明:不同的空气来流分布形式对冷凝器性能的影响程度不同,不均匀程度的大小可以由不均匀因子τ来衡量,当来流不均匀程度增大时,不均匀因子τ增大,冷凝器换热性能恶化,整体性能下降。Based on the steady state distributed parameters model of the condensers which was put forward in the previous related reference. The effect of different non-uniform air distribution, different flow rate of the refrigerant, different refrigerant layout and different rows on the performance of the condensers are studied and some useful results are obtained. All the non-uniform air distribution make the performance of the condensers worse. The non-uniform degree can be measured by the non-uniform factor. When the non-uniform factor increase, the performance of the condensers become worse. All these research results can be applied to predict the influence on the performance of condensers when the inlet air distribution is non-uniform.

关 键 词：冷凝器 数值模拟 不均匀因子 来流不均匀性 

分 类 号：TK32[动力工程及工程热物理—热能工程]