Section: Thermodynamics | Type: NAT | Marks: 2
During a steady state air-conditioning process, air enters a heating section at 15 ℃ with 40% relative humidity and leaves at 30 ℃. Assuming the heating process takes place at 100 kPa, the relative humidity of the air at exit is _______ % (round off to nearest integer). Saturation pressures of water vapor at 15 ℃ and 30 ℃ are 1.7057 kPa and 4.2469 kPa respectively.
Answer: 15 to 17