If 5.0 cubic metres per second of air enters a heating coil at 20 degrees C dry-bulb and 15 degrees C wet bulb, and leaves the heating coil at 30 degrees C dry bulb, what is the change in enthalpy?
a) 52 kJ/kg
b) 42 kJ/kg
c) 15 kJ/kg
d) 20 kJ/kg
e) 10 kJ/kg
Answer: E