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4.A boiler uses coal for fueling a power plant. The heating value of coal is 74500 kJ per kg of fuel with 90% excess air. Determine: a. Theoretical air and fuel ratio b. Actual air and fuel ratio c. Mass of air if the boiler consumes 25lb/s of coal. d. Heat transfer in BTU if air enters at 16 deg. C and leaves at 70 deg. C e. Heat transfer in kilowatts if air enters at 16 deg. C and leaves at 70 deg. C

4.A boiler uses coal for fueling a power plant. The heating value of coal is 74500 kJ per kg of fuel with 90% excess air. Determine: a. Theoretical air and fuel ratio b. Actual air and fuel ratio c. Mass of air if the boiler consumes 25lb/s of coal. d. Heat transfer in BTU if air enters at 16 deg. C and leaves at 70 deg. C e. Heat transfer in kilowatts if air enters at 16 deg. C and leaves at 70 deg. C

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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4.A boiler uses coal for fueling a power plant. The heating value of coal is 74500 kJ per kg of fuel with 90% excess air. Determine:
a. Theoretical air and fuel ratio
b. Actual air and fuel ratio
c. Mass of air if the boiler consumes 25lb/s of coal.
d. Heat transfer in BTU if air enters at 16 deg. C and leaves at 70 deg. C
e. Heat transfer in kilowatts if air enters at 16 deg. C and leaves at 70 deg. C 

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