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(Solved): Thermodynamics 5. (a) Using the psychrometric chart to find the humidity ratio, the relative humi ...
Thermodynamics
5. (a) Using the psychrometric chart to find the humidity ratio, the relative humidity, and the specific enthalpy of a \( 100 \mathrm{kPa} \) air stream measured to be \( 40^{\circ} \mathrm{C} \) (dry-bulb) and \( 20^{\circ} \mathrm{C} \) (wet-bulb), respectively. [6 marks] (b) Plot the following air-conditioning processes on a psychrometric chart: heating; cooling; heating and humidifying; dehumidifying; evaporative cooling; mixing airstreams; and the comfort zone. [14 marks]
Expert Answer
(a) The pressure is given as 100kPa thus we can use the standard psychrometric charts available at P=1atm=1