A tank contains 21 kg of dry air and 0.3 kg of water vapor at30°C and 100 kPa total pressure. Determine
(a) The specific humidity
(b) The relative humidity
(c) The specific enthalpy of the mixture in the tank as(kJ/kg-mixture) (calculate by hand)
(d) The specific enthalpy of the mixture in the tank as(kJ/kg-dry air) (calculate by hand)
(e) Explain (in 1-2 sentences) the difference between the valuesin c and d – which value agrees with the enthalpy value in thepsychrometric chart at this condition?
