dewpoint of water at tempratures less than 32¦F
dewpoint of water at tempratures less than 32¦F
(OP)
I have a natural gas stream that contains a very small amount of water vapour. The concentration is about 45 ppmv and the line pressure is at 600 psia.
Assuming I've got my science right, the partial pressure of the water vapour works out to 45x10^-6 x 600 psia = 0.027 psia.
Now the problem...at that partial pressure, the saturation temperature is less than 32°F which is the lowest temperature on every steam table I have. How do I figure out what the water dew point actually is? Presumably I can have dew points less than 32°F?
thanks,
tim
Assuming I've got my science right, the partial pressure of the water vapour works out to 45x10^-6 x 600 psia = 0.027 psia.
Now the problem...at that partial pressure, the saturation temperature is less than 32°F which is the lowest temperature on every steam table I have. How do I figure out what the water dew point actually is? Presumably I can have dew points less than 32°F?
thanks,
tim





RE: dewpoint of water at tempratures less than 32¦F
Check it out in GPSA Engineering Data book.
RE: dewpoint of water at tempratures less than 32¦F
RE: dewpoint of water at tempratures less than 32¦F
Perry's as previously mentioned, Lange's, Felder & Rousseau, you name it....
RE: dewpoint of water at tempratures less than 32¦F
tim