Air at 10°C and 60% humidity is heated to 25°C. Estimate the final humidity. (Use the chart.)

A) 32%
B) 28%
C) 24%
D) 21%


C) 24%
Locate state 1 at 10°C and 60% humidity. Move at constant ? (it is assumed that no moisture is added. If it were, the amount of water would be needed) to the right until T2 = 25°C. There the chart is read to provide the humidity as ? = 24%.

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