Q2// In a boiler trail of one hour duration the following observations wer kg, coal burnt = 695 kg, calorific value of coal = 30200 kJ/kg, dryness fra -0.94, pressure of the boiler= 15 bar, temperature of steam leaving the s of feed water = 80C. Calculate: (a) Thermal efficiency of the boiler without super heater. (b) Thermal efficiency of the boiler with super heater. Ans(58%:73%)
Q2// In a boiler trail of one hour duration the following observations wer kg, coal burnt = 695 kg, calorific value of coal = 30200 kJ/kg, dryness fra -0.94, pressure of the boiler= 15 bar, temperature of steam leaving the s of feed water = 80C. Calculate: (a) Thermal efficiency of the boiler without super heater. (b) Thermal efficiency of the boiler with super heater. Ans(58%:73%)
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter44: Geothermal Heat Pumps
Section: Chapter Questions
Problem 12RQ: The function of the pressure tank in an open-loop, geo-thermal heat pump well system is to prevent...
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![Q2// In a boiler trail of one hour duration the following observations were made: Steam generated -5250
kg. coal burnt = 695 kg, calorific value of coal = 30200 kJ/kg, dryness fraction of steam
-0.94, pressure of the boiler= 15 bar, temperature of steam leaving the super heater-400C, temperature
of feed water 80C. Calculate:
(a) Thermal efficiency of the boiler without super heater.
(b) Thermal efficiency of the boiler with super heater. Ans(58%:73%)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Faa4b6270-2902-4a89-b1f6-83cb1d987c9c%2Fa2448a76-0523-488d-ad33-8075ba64268f%2Fh1ntul6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q2// In a boiler trail of one hour duration the following observations were made: Steam generated -5250
kg. coal burnt = 695 kg, calorific value of coal = 30200 kJ/kg, dryness fraction of steam
-0.94, pressure of the boiler= 15 bar, temperature of steam leaving the super heater-400C, temperature
of feed water 80C. Calculate:
(a) Thermal efficiency of the boiler without super heater.
(b) Thermal efficiency of the boiler with super heater. Ans(58%:73%)
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