A sample of air at 101 kPa has a dry-bulb temperature of 25C and a wet-bulb...

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A sample of air at 101 kPa has a dry-bulb temperature of 25C and a wet-bulb temperature 20C. Calculate (a) the specific humidity o; (b) the partial pressure of water vapour pv; (c) the relative humidity o; (d) the mass of dry air in 1 m of mixture; (e) the dew point. (f) If the mixture is cooled to 5C at constant pressure, determine the specific humidity in the final state. N.B. Do not use the psychrometric chart or the properties software for these calculations. A sample of air at 101 kPa has a dry-bulb temperature of 25C and a wet-bulb temperature 20C. Calculate (a) the specific humidity o; (b) the partial pressure of water vapour pv; (c) the relative humidity o; (d) the mass of dry air in 1 m of mixture; (e) the dew point. (f) If the mixture is cooled to 5C at constant pressure, determine the specific humidity in the final state. N.B. Do not use the psychrometric chart or the properties software for these calculations.