Dew point, humidity and pressure
- By karl_h
- Tanks, Pumps, Compressors
- 2 Replies
It wouldn't matter if the dew point was 20F. Inside the pressurized tank if you took that air at a dew point of 20F and magically compressed it without any loss of water, you would have a ton of water sloshing around in the bottom of your tank at any temperature you can experience in Texas, indoors/outdoors/ac/winter/summer doesn't matter. Look up steam tables and learn to read them if you want more detail. Quick example, at 300 bar and 20C(68F roughly), the dew point that equates to 100% humidity is approx -44C(about -47F) any warmer and water condenses, at 200 bar and 20C, the 100% humidity dew point is about -40C.
The real question is on the high pressure side of your pump, do you have a moisture separator that works really well, and a molecular sieve filter after that which is properly designed and used. Has to be on high pressure side of pump, and the pressurized air is hotter than ambient so can hold more water that won't condense, that is what the molecular sieve is for after the water separator.
The real question is on the high pressure side of your pump, do you have a moisture separator that works really well, and a molecular sieve filter after that which is properly designed and used. Has to be on high pressure side of pump, and the pressurized air is hotter than ambient so can hold more water that won't condense, that is what the molecular sieve is for after the water separator.
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