- Notes:
- Values for target air ratio given in this table are for the air ratio at the boiler outlet at combustion at a fixed load under stable conditions after regular inspection.
- Load factor and air ratio are calculated based on Notes 2 and 3 to Attachment Table 1 (A) (1).
- The target air ratio for solid fuel fixed-bed boilers fueled by powdered coal shall be 1.15-1.25 for electricity supply business, and 1.2-125 for other (provided that such facilities have an evaporation capacity of from 30 tons per hour or from 10 tons to under 30 tons.
- The value of the target air ratio for boilers combusting black liquor shall be 1.2-1.3 at a load factor of 50-100%.
- For multifuel boilers combusting multiple types of fuel, the target air ratio for the fuel with the highest fuel ratio, based on heat value, shall apply.
- Values for target heat value given in the table shall not apply to the air ratios of the following boilers; provided, however, that consideration shall be given to control of the air ratio based on the table where possible:
- (1) Small boilers provided for in Article 1.4 of the Occupational Safety and Health Law Enforcement Ordinance.
- (2) Boilers modified after installation for fuel conversion.
- (3) Multifuel boilers combusting wood waste, tree bark, sludge, and other industrial waste with fuel.
- (4) Boilers combusting waste tires.
- (5) Furnaces combusting byproduct gas with a heat value of not more than 3,800 kJ per normal cubic meter.
- (6) Boilers processing toxic gas.
- (7) Boilers using waste heat.
- (8) Boilers not in operation at regular inspection or otherwise not in regular operation, and boilers used for development, research or trial production.
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