Base on linear treatment of the enthalpy of saturation air, the formulas of temperature distribution? value of heat conduction and efficency for evaporator fins of air-cooling heat pump are deduced under frosting conditions. 在对饱和空气焓作了线性处理的基础上,推导出风冷热泵蒸发器结霜工况翅片温度分布、传热量及翅片效率的公式。