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 heating capacity of the coil?
a) 52 kW
b) 59.4 kW
c) 42 kW
d) 65.2 kW
e) 51.7 kW
Answer: B