Water is fed to a boiler at 50°C, the enthalpy of vaporization at atmospheric pressure in the boiler is 2400 kJ/kg, steam coming out from the boiler is 0.7 dry, the net heat supplied in the boiler (Cp = 4 KJ/kgK).
1
2160 KJ/kg
2
1540 KJ/kg
3
1980 KJ/kg
4
1880 KJ/kg