METI / ECCJ / ACE Training Program MTPEC06 (2007.01)

(1) Industrial Furnaces

5) Air Ratio vs. Waste Gas Heat Loss

(1) Industrial Furnaces

6) Fuel Saving vs. Preheated Air (Oil)

(1) Industrial Furnaces

7) Heat Dissipation from Surface

(1) Industrial Furnaces

8) Furnace External Wall Temperatures for Industrial Furnace

Standard/Target for Furnace External Wall Temperature

Furnace temperature (ºC)	Standard / target for furnace external wall temperature (ºC)
Furnace temperature (ºC)	Roof	Side wall	Bottom facing to air
1,300 = 1,100 = ~ <1,300 900 = ~ <1,100 < 900	140/120 125/110 110/100 90/80	120/110 110/100 95/90 80/70	180/160 145/135 120/110 100/90

Note: The standard/target values of furnace wall external wall temperature mentioned in the table above defined the average temperature of furnace wall external surface (except specific parts) during its normal, steady operation at an outside air temperature of 20ºC.

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