文章基本信息

标题：CALCULATION METHOD FOR FLOW BOILING AND FLOW CONDENSATION OF R134A AND R1234YF IN CONVENTIONAL AND SMALL DIAMETER CHANNELS
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作者：Dariusz Mikielewicz ; Blanka Jakubowska
期刊名称：Polish Maritime Research
电子版ISSN：2083-7429
出版年度：2017
卷号：24
期号：1
页码：141-148
DOI：10.1515/pomr-2017-0032
语种：English
出版社：Sciendo
摘要：The paper presents the results of calculations performed using the authors’ model to predict the heat transfer coefficient during flow boiling for two refrigerants R134a and R1234yf.The experimental data from various past studies have been collected and the calculations have been conducted for the full range of quality variation and a wide range of mass velocity.The aim of the study was to test the sensitivity of the in-house flow boiling and flow condensation model.The importance of taking into account the surface tension as the parameter exhibiting its importance in case of the flow in minichannels,as well as the influence of the reduced pressure were analysed.The obtained numerical results show good consistency with those recorded in the experiments.
关键词：heat transfer coefficient;flow boiling;conventional channels;minichannels