(8) Fuel:
Coal (see coal analysis):
[Oil (see oil analysis)]:
(9) Heating surface, minimum:
Radiant: [_____] sq. m ft.
Convective: [_____] sq. m ft.
(10) Furnace volume, minimum:
[_____] cu. m ft.
(11) Maximum boiler flue gas exit
Temperature: [_____] degrees C F
Continuous rating: [_____] degrees C F
(12) Maximum economizer flue gas exit
Temperature: [_____] degrees C F
Continuous rating: [_____] degrees C F
(13) Efficiency at maximum continuous
rating [includes economizer]
Coal: [_____] percent
[Oil]: [_____] percent (14)
Elevation above sea level: [_____] meters feet
(15) Boiler room & combustion air ambient:
[_____] degrees C F
(16) Maximum allowable total draft loss
furnace, boiler, exit damper,
and economizer outlet at
continuous rating: [_____] Pa inches of Water
(17) Steam drum, minimum diameter:
[_____] mm inches
(18) Mud drum, minimum diameter:
[_____] mm inches
(19) Seismic zone:
[_____]
1.4.1.2
Economizer
**************************************************************************
NOTE: Feedwater temperatures should be 110 degrees C
230 degrees F when sulfur (S) content of fuel is
0.5 percent to 1.5 percent; 116 degrees C 240
degrees F, S = 1.5 percent to 2 percent; 121 degrees
C 250 degrees F, S = 2.0 percent to 2.7 percent.
Where fuels having more than 1.5 percent sulfur
content are to be fired, finned tubes shall not be
used unless the steel tubes are covered with cast
iron fin casing.
**************************************************************************
a.
Flue gas quantity:
[_____] kg/s lbs/hr
b.
Flue velocity:
[_____] m/s ft/min
c.
Flue gas temperature entering economizer:
[_____] degrees C F
d.
Flue gas temperature leaving economizer:
[_____] degrees C F
SECTION 15502N
Page 24
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