The efficiencyofheatexchanger is considerably increased owing to the evaporation-condensation phase transformation of the cooling medium.
利用工质蒸发-冷凝的相变过程，提高换热器的工作效率。
2
At the same time, it is concluded that the lower efficiencyofheatexchanger is caused by the leakage of gas, which was proved in the following operation of reheating furnace.
同时发现了换热器效率低的原因主要是由漏烟引起的，这一点也被其后生产实践所验证。
3
According to the efficiencyofheatexchanger, we can determine the suitable conditions of outdoor air for heat recovery from exhaust air by considering energy consumption of fan.