Fin electric heating tube heater: large thermal inertia, stable heating power, not blocking the air flow channel, wide heating range, long service life.
翅片电热管加热器：热惰性大、加热功率稳定、不堵塞空气流通通道、加温范围宽、使用寿命长。
The electric hot air curtain machine can be divided into two types of semiconductor thermal sensitive ceramic heater and a fin electric heating tube heater according to different heating materials.
电热风幕机根据加热材料不同可分为半导体热敏陶瓷加热器和翅片电热管加热器两种。
Application of air heater of vortex tube in petrochemical engineering industry has been summarized recently.
对近几年来光管扰流子空气预热器在石化行业的应用情况进行了总结。
Depending upon the requirements of cold end temperature of tube wall of air preheaters, the method of cold air preheating and the criterion of selection for air heater are put forward.
根据空气预热器冷端壁温的要求，提出了冷风预热的方法以及暖风器选择的原则。
The time constant and instantaneous efficiency of the feed-tube solar air heater were tested on the solar irradiance. The equation for instantaneous efficiency was obtained at the different flow rate.
在自然辐照条件下测试了内插管式空气集热器的时间常数、瞬态效率，得到了不同流量下的瞬态效率方程。
The time constant and instantaneous efficiency of the feed-tube solar air heater were tested on the solar irradiance. The equation for instantaneous efficiency was obtained at the different flow rate.
在自然辐照条件下测试了内插管式空气集热器的时间常数、瞬态效率，得到了不同流量下的瞬态效率方程。
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