Air at a temperature of 30 C and a pressure of 100 kPa has a relative
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Question:
Air at a temperature of 30 °C \n and a pressure of 100 kPa has a relative humidity of 80%. Calculate
(a) The molal humidity of the air
(b) Saturated molal humidity of this air if its temperature is reduced to 15 oC and its pressure increased to 200 kPa, condensing out some of the water
(c) Weight of water condensed from 100 m3 of the original we air in cooling to 15oC and compressing to 200 kPa
(d) The final volume of the wet air of part (c).
Vapor pressure of water at 30 °C = 4.24 kPa vapor pressure of water at 15 oC = 1.7 kPa
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