Water (CP = 4 kJ/kg K) is fed to a boiler at 30°C, the enthalpy of vaporization at atmospheric pressure in the boiler is 2400 kJ/kg; the steam coming from the boiler is 0.9 dry. What is the net heat supplied in the boiler?

Water (CP = 4 kJ/kg K) is fed to a boiler at 30°C, the enthalpy of v

1.	Water (CP = 4 kJ/kg K) is fed to a boiler at 30°C, the enthalpy of vaporization at atmospheric pressure in the boiler is 2400 kJ/kg; the steam coming from the boiler is 0.9 dry. What is the net heat supplied in the boiler?
A.	2160 kJ/kg
B.	2400 kJ/kg
C.	2440 kJ/kg
D.	2280 kJ/kg
Answer» D. 2280 kJ/kg