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Join Date: Jul 2000
Location: Houston, Tejas
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Specific Humidity is a ratio of how much water is in the air.

Relative Humidty is a ration of how much water is in the air, vs how much it can hold.

Dew Point is the temperature where water will start coming out of the air.

If you compress air, the pressure will rise and the temperature will rise. But you also increase the mositure content. It will stay in gas form, as long as the temp stays above the dewpoint. However, as you compress the gas, the dewpoint will also rise. When the compressed air cools, it will form liquid water.

If you fill your tank with cold compressed air, most of the mositure will have already fallen out.
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Old 07-15-2007, 02:10 PM
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