How to calculate water vapor in air

[cronopioespedro]

Greetings...

I want to avoid the use of psychrometric charts, but I have information of air wet and dry bulb temperature. What is the formula that will allow me to calculate the humidity, so I can then calculate the quantity of water vapor in the air. If you do not have the formula handy, at least let me know, any references where I can find it. Thanks in advance. Happy Holidays...

 

[Latexman]

I believe using the air-water psychrometric chart would be much easier and faster than searching for the equations you speak of.

Good luck,
Latexman

 

[insult2injury]

The equations are available from most intro thermo books.

I2I

 

[schnipp]

You can also down load them from the web somewhere as an add-in to Excel.

Costs a few dollars, but if you really want. . . .

 

[schnipp]

AHA! Here it is:

http://www.linric.com/products.asp

They have a few options for you.

 

[katmar]

If you want to program it yourself, this problem was discussed before in thread724-129442

Katmar Software
Engineering & Risk Analysis Software

http://katmarsoftware.com