Past ME Board The following coa C = 70.5 % S = 3.0% A stocker fired b fuel. Calculate th pressure if boiler A. 212,830 m³/h B. 342,987 m³/h

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8. Past ME Board Problem
The following coal has the following ultimate analysis by weight :
Moisture = 4%
C = 70.5%
0₂ = 6.0%
H₂ = 4.5 %
Ash = 11 %
S = 3.0%
N₂ = 1.0 %
A stocker fired boiler of 175,000 kg/hr steaming capacity uses this coal as
fuel. Calculate the volume of air in m³/hr with air at 60°F and 14.7 psia
pressure if boiler efficiency is 70%, excess is 30% and FE = 1.10.
A. 212,830 m³/hr
C. 122,345 m³/hr
D. 132,456 m³/hr
B. 342,987 m³/hr
Transcribed Image Text:s 8. Past ME Board Problem The following coal has the following ultimate analysis by weight : Moisture = 4% C = 70.5% 0₂ = 6.0% H₂ = 4.5 % Ash = 11 % S = 3.0% N₂ = 1.0 % A stocker fired boiler of 175,000 kg/hr steaming capacity uses this coal as fuel. Calculate the volume of air in m³/hr with air at 60°F and 14.7 psia pressure if boiler efficiency is 70%, excess is 30% and FE = 1.10. A. 212,830 m³/hr C. 122,345 m³/hr D. 132,456 m³/hr B. 342,987 m³/hr
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