A boiler generates steam at the rate of 6000 kg/h at a pressure of 800 kPa with a dryness fraction of XXXXXXXXXXThe feed water is supplied at 40°C. If the efficiency of the boiler is 7 5%, calculate...

A boiler generates steam at the rate of 6000 kg/h at a pressure of 800 kPa with a dryness fraction of 0. 98. The feed water is supplied at 40°C. If the efficiency of the boiler is 7 5%, calculate the rate of coal consumption, which has a calorific value of 31000 kJ/kg. What is equivalent evaporation from this boiler? A boiler generates steam at the rate of 6000 kg/h at a pressure of 800 kPa with a dryness fraction of 0. 98. The feed water is supplied at 40°C. If the efficiency of the boiler is 7 5%, calculate the rate of coal consumption, which has a calorific value of 31000 kJ/kg. What is equivalent evaporation from this boiler? If the superheater is used with the boiler and temperature of superheated steam reaches 250°C, then   (a) what is the equivalent evaporation from the boiler, and   (b) what is the thermal efficiency of boiler? Take specific heat of superheated steam as Cps 2.27 kJ/kg· °C