冷凝器流程布置的数值模拟研究（1）：数学模型的建立与验证
Numerical simulation of refrigerant flow arrangement in condensers(1): developing and verifying of a mathematic model
摘要：
基于传热单元数法，建立了冷凝器的数学模型，模拟了两种不同流路冷凝器的换热性能和阻力特性。对比结果表明，冷凝器沿管长的壁温分布与前人的实验结果较为一致，阻力计算结果与实验结果最大偏差为7%，该模型可以用来比较不同形式流路对冷凝器性能的影响。
关键词：效能-传热单元数法,冷凝器,流程布置,数学模型,模拟
Abstract：
Based on the εNTU method， develops a mathematic model of condenser and simulates the heat transfer performances and the resistance characteristics of two condensers with different refrigerant flow arrangements. The results show that the location tubewall temperature distribution along the tube length agrees with experimental results recorded in previous literature， that the maximum total pressure error between the numerical simulation and the experimental values is 7%， and that the mathematic model can be used to compare the effect of flow arrangements on the performance of condensers.
Keywords:ε-NTU method， condenser， refrigerant flow arrangement， mathematic model， simulation