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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.

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.

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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
Transcribed Image Text: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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