While at the same inlet air velocity and relative humidity, the cooling capacity of heat exchanger Φ, fin surface heat transfer coefficient h and the pressure drop Δ P values are constantly increasing with the frosting time increases. 同时在相同的入口空气流速和相对湿度下,换热器的制冷量Φ、翅片表面传热系数h和空气侧压降ΔP值随着结霜时间的进行是不断增大的。