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A fire-tube steam boiler must produce 1.5 kg/s of saturated steam with 3% humidity, at 160°C. The boiler burns wood with 20% humidity and 25% excess air. Performance was analyzed based on values measured over a time interval. The boiler is fed with water at 70°C. The composition of the firewood (dry basis) is: C = 50%, H = 7%, O = 38%, N = 5%. The overall yield is 75% (based on PC₁). Determine: a) Firewood consumption (kg/h); b) The CO₂ content, on a dry basis, expected in the chimney;

A fire-tube steam boiler must produce 1.5 kg/s of saturated steam with 3% humidity, at 160°C. The boiler burns wood with 20% humidity and 25% excess air. Performance was analyzed based on values measured over a time interval. The boiler is fed with water at 70°C. The composition of the firewood (dry basis) is: C = 50%, H = 7%, O = 38%, N = 5%. The overall yield is 75% (based on PC₁). Determine: a) Firewood consumption (kg/h); b) The CO₂ content, on a dry basis, expected in the chimney;

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A fire-tube steam boiler must produce 1.5 kg/s of saturated steam with 3% humidity, at 160°C. The boiler burns wood with 20% humidity and 25% excess air. Performance was analyzed based on values measured over a time interval. The boiler is fed with water at 70°C. The composition of the firewood (dry basis) is: C = 50%, H = 7%, O = 38%, N = 5%. The overall yield is 75% (based on PC₁). Determine: a) Firewood consumption (kg/h); b) The CO₂ content, on a dry basis, expected in the chimney;
Transcribed Image Text:A fire-tube steam boiler must produce 1.5 kg/s of saturated steam with 3% humidity, at 160°C. The boiler burns wood with 20% humidity and 25% excess air. Performance was analyzed based on values measured over a time interval. The boiler is fed with water at 70°C. The composition of the firewood (dry basis) is: C = 50%, H = 7%, O = 38%, N = 5%. The overall yield is 75% (based on PC₁). Determine: a) Firewood consumption (kg/h); b) The CO₂ content, on a dry basis, expected in the chimney;
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