In a boiler trial observations made are as: Feed water temperature = 30°C Boiler pressure = 12 bar Dryness fraction of steam = 0.80 Coal consumption = 400 kg/h Feed water supplied = 3,000 kg/h...

In a boiler trial observations made are as:

Feed water temperature = 30°C

Boiler pressure = 12 bar

Dryness fraction of steam = 0.80

Coal consumption = 400 kg/h Feed water supplied = 3,000 kg/h

Calorific value of coal = 38,000 kJ/kg

Calculate the evaporation factor and equivalent

evaporation at 100°C in kg/kg of coal.

Specific heat of feed water = 4.18 kJ/kgK