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化工学报  2015 

水平表面结霜过程的实验研究

DOI: 10.11949/j.issn.0438-1157.20150324, PP. 95-99

Keywords: 相变,表面,传热,冻结时间,霜晶形貌,霜层高度

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Abstract:

对水平表面在低温高湿条件下结霜过程进行实验研究,分析了冷面温度、湿空气温度和表面特性等因素对水珠冻结和霜层生长的影响。结果表明:冷面温度越低,过冷水珠冻结时间越短、冻结直径越小;在湿空气温度与冷面温度温差相等的条件下,湿空气温度越低,过冷水珠冻结时间越短、冻结直径越小;疏水表面上过冷水珠的冻结时间比裸铝表面晚。冷面温度越低,湿空气流速越快,则霜层生长越快。

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