amount of water vapor the air can contain at 0° is only 5g/kg. The excess water

Question

amount of water vapor the air can contain at 0° is only 5g/kg. The excess water vapor will condense out as liquid water 10g/kg-5g/kg = 5 g of liquid water Question #4: When saturated air at 20°C cools to 5°C, approximately how many grams of water vapor will condense into liquid water? Note: Once the air reaches dew point temperature and continues to cool, the air will remain at humidity as liquid water condenses out. Question #5: Saturated air that contains 10g of water vapor warms until the air temperature is 35°C. What will be the relative humidity of the air at that temperature (assuming no additional water vapor is added to the air)? Ask me anything

Explanation / Answer

4) From psychrometric chart

Water Vapor (g) per Kilogram of Dry Air at 20o C = 14.85 g/Kg

Water Vapor (g) per Kilogram of Dry Air at 5o C = 5.4 g/Kg

Water Vapor condensed into liquid water when air cools from 20o C to 5o C = 14.85 g/Kg - 5.4 g/Kg

                                                         = 9.45 g/kg

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