The mass of coal(lignite) used in boiler of a steam power plant is 20 ton per hour and calorific value of lignite is 13600 KJ/kg. Also, if the entropy of steam entering turbine is =750 J/K and that of feedwater entering the boiler is =550J/K. Find the mean temperature of heat addition?
A. 100 deg C
B. 115 deg C
C. 110 deg C
D. 105 deg C
Answer:A
The mass of coal(lignite) used in boiler of a steam power plant is 20 ton per hour and calorific value of lignite is 13600 KJ/kg. Also, if the entropy of steam entering turbine is =750 J/K and that of feedwater entering the boiler is =550J/K. Find the mean temperature of heat addition?
A. 100 deg C B. 115 deg C C. 110 deg C D. 105 deg C
Explanation: Tmean= Q/( change in entropy)