采用波纹炉胆和螺纹烟管，增加了传热效果，提高了热效率；
Uses the ripple furnace tube , and the thread smoke tube, increased the heat transfer effect, enhances the boiler thermal efficiency;
采用换热结构在炉胆外侧作强制空气冷却，以降低炉服的工作温度；
The heat exchanging construction is used to carry out forced air-cooling on the external surface of the HEJ to re-duce its working temperature.
冷却用空气在冷却炉胆的过程中成为热风并被送入炉内实行热风操作。
In the process of cooling of the HEJ the cold air is changed into hot blast and...
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