The frost surface temperature and frost thickness were measured on the coated surface and uncoated copper surface, respectively, and the results were compared.

进行了不同实验条件下吸水表面上霜厚的测量，与普通金属表面进行了对比，研究了涂层厚度对结霜的影响。

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Establishes a dynamic lumped parameter model for air cooled heat pump under frosting condition. Divides frosting course into accumulation of density and frost thickness.

建立了结霜工况下空气源热泵集中动态参数模型，将结霜过程分解成密度项的累计和霜层厚度项的累计。

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An experimental study on the performance of freeze-dryer's cold trap has been carried out under different temperature of the cold trap coil and different frost thickness in the paper.

对影响冻干机冷阱传热性能的两个因素(冷阱盘管壁面温度和结霜厚度)进行了实验研究。

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