本设计的要点是加热炉高的热效率，提高燃油的利用率。
The gist of the present furnace design with high thermal efficiency and fuel utilization.
也可以设置烟气余热回收系统来提高加热炉的热效率。
Flue gas can also beset up waste heat recovery system to increase the thermal efficiency of furnace.
为了节约能源，提高加热炉的热效率是一项重要的措施。
To save energy raising heat efficiency of furnace is an important measure.
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