The furnace top inner lining construction is important character of hot air furnace type. Because it decides furnace lining lifetime.

炉顶内衬结构是热风炉类型的重要特征，决定着热风炉炉型和炉衬寿命的长短。

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Studies the fuel kinds, the exit gas temperature of the hot air furnace, the excess air coefficient and the air moisture and temperature 'influence for waste heat loss.

研究了燃料种类、热风炉的排烟温度、过量空气系数以及燃烧空气湿度和温度对排烟热损失的影响规律。

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When changing the controlling parameters, the control effect of the system is still good. This controller can meet the requirements of controlling the combustion of hot air furnace.

在改变控制参数时，该控制系统仍可保持较好的控制效果，可满足现有热风炉实现燃烧自动控制的要求。

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Phoenix is an open-air blast furnace for much of the year.

NEWYORKER: Sheriff Joe

The furnace drew air from an underground tunnel to beneath the grate where the fuel was placed.

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Before you rush out and order a geothermal system, remember that furnace and air-conditioning technology has advanced as well, with new units 20% more efficient than a decade ago.

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