作为舰船保障系统的一部分，舰船空调的强化换热及制冷剂替代工作具有重要意义。本文通过数值模拟，对外径为5 mm、长为1 m的水平微肋管在R22和R410A进行沸腾换热特性研究。研究表明：采用Euler多相流模型及RPI沸腾换热模型计算结果基本能够反映直肋管管内沸腾过程中的换热特性，与文献中实验结果差距不大；相同条件下R410A的换热特性要比R22高，约是1.3～1.4倍，在舰船空调换热器进行制冷工质替换及设计优化过程要予以考虑。
Improvements in heat transfer enhancement and refrigerant replacement is significant to ship air conditioning which is an important part of the ship guarantee system. In this paper a forced boiling heat transfer characters of refrigerant R22 and R410A in a 5 mm micro-fin tube has been numerically simulated with the application of thermal phase change RPI model in Ansys CFX. The simulation results agree well with experimental results. It is found that the heat transfer coefficient with R410A is about 1.3 to 1.4 times of that with R22.
2019,41(2): 85-88 收稿日期：2017-11-27
DOI：10.3404/j.issn.1672-7649.2019.02.017
分类号：TK124
作者简介：姜国宝(1987-),男,博士,工程师,现从事船舶大气环境空中系统研究
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