The condensing water heater has a considerable energy-saving potential, and reducing the flue gas temperature can effectively enhance the thermal efficiency of gas water heater.
冷凝式热水器具有相当大的节能潜力，降低排烟温度可有效提高热水器热效率。
It is known that both the thermal efficiency and the productivity are unbelievably low in the reducing furnace.
研究表明：硅热法炼镁还原炉的热利用率和生产率都非常低。
Hydraulic control valve is not enough energy emissions will cause condensation water can not discharge in time, reducing the thermal efficiency of heating equipment.
水力控制阀排放能量不够，调节阀会造成凝结水不能及时排出，降低加热设备的热效率。
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