流体机械

2007, No.419(05) 70-74+41

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采集凝固热热泵技术层流工况相变强化换热的研究
Study on Heat Transfer Enhancement in Heat Pump Technology with Freezing Latent Heat Collection

钱剑峰;张承虎;孙德兴;
QIAN Jian-feng,ZHANG Cheng-hu,SUN De-xing(Harbin Institute of Technology,Harbin150090,China)

摘要(Abstract):

介绍了新型采集凝固热热泵技术及其关键设备,基于准稳态近似方法分析了凝固热采集装置中层流流动水在常壁温条件下的管内相变问题,采用当量平均表面换热系数和潜热显热比两个参数讨论了各因素对相变强化换热性能的影响。分析结果对于设计参数的确定及系统性能的改善有重要作用。
A new heat pump technology with freezing heat collection and its key device are introduced.The problem of freezing of laminar flow in the pipe at constant wall temperature is analyzed on the basis of quasi-steady approximate method.And the influences of all factors to the performance of heat transfer enhancement are discussed by the two parameters which are the equivalent average surface heat transfer coefficient and the ratio of latent heat to sensible heat.The results and conclusions are important to the design parameters and the improvement of system performance.

关键词(KeyWords): 相变;热泵;强化换热
phase change;heat pump;heat transfer enhancement

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作者(Author): 钱剑峰;张承虎;孙德兴;
QIAN Jian-feng,ZHANG Cheng-hu,SUN De-xing(Harbin Institute of Technology,Harbin150090,China)

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