大连理工大学学报2012，Vol.52Issue(3)：406-411,6.
凝固换热器凝固换热特性模拟分析
Simulation analyses of heat transfer characteristics for freezing heat exchanger
摘要
Abstract
It is a new idea to develop and utilize the surface water heat energy by the heat pump system with freezing heat collection in the cold regions, and the heat transfer performance of the key device named freezing heat exchanger is directly related to the heating efficiency of the heat pump system. After introducing the freezing heat exchanger and its heat transfer conditions in winter, on the basis of quasi-static approximation and the fitting method, the heat transfer characteristics of the turbulent surface water are simulated and analyzed with the definition of the dimensionless parameters, such as equivalent freezing heat transfer coefficient ratio. And the statistical mathematical model of the average equivalent freezing heat transfer coefficient ratio is built up in the deicing cycle. The results show that the instantaneous equivalent freezing heat transfer coefficient ratio is greater with the lower inlet water temperature or wall temperature, the smaller diameter and Re number and the bigger tube length, while the average equivalent freezing heat transfer coefficient ratio of the freezing heat exchanger is between 1 and 4.关键词
凝固换热器/地表水/热泵/换热性能/凝固当量换热系数比Key words
freezing heat exchanger/surface water/heat pump/heat transfer performance/equivalent freezing heat transfer coefficient ratio分类
建筑与水利引用本文复制引用
钱剑峰,张吉礼,孙德兴..凝固换热器凝固换热特性模拟分析[J].大连理工大学学报,2012,52(3):406-411,6.基金项目
国家自然科学基金资助项目 （）
黑龙江省教育厅科学技术资助项目 （）
黑龙江省自然科学基金资助项目 （）
