The tests have been conducted to analyse the working principle of temperature keeping airexchanger and test synthetically the volume of wind, pressure of wind and air heat exchanger efficiency.
本文对双向恒温换气机的工作原理进行了分析研究，并对其风量、风压及热效率等特性进行了综合测试。
2
Shenwu puts up the initial investment to install a heat exchanger that preheats the air going into the furnace, slashing the client's fuel costs.
申武投资初期安装了一个热交换器，将进入炉内的空气预热，降低了客户的燃料成本。
3
On the other hand, cryogenic compressed air in the heat exchanger temperature rise, so that the exhaust pipe is not caused by low temperature and dewing phenomenon.