If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Formulas underlying Psychrometric Charts.

ircoha · 2008-03-01 21:07:59

I have the charts from the CIBSE as well as the tables. Just wondering if anyone has the formulas that underly the charts. For example if the db temp is 25 degrees C and the % saturation is 80% then the moisture content is 0.016 kg/kg da Thanks

01-03-2008 10:07PM

#1

ircoha

Closed Accounts Posts: 2,290 ✭✭✭

Join Date: August 2006

Posts: 2039

I have the charts from the CIBSE as well as the tables.

Just wondering if anyone has the formulas that underly the charts.

For example if the db temp is 25 degrees C and the % saturation is 80% then the moisture content is 0.016 kg/kg da

Thanks

0

Comments

#2 03-03-2008 01:49AM

Timmaay

Registered Users, Registered Users 2 Posts: 11,396 ✭✭✭✭

Join Date: April 2007

Posts: 11335

If I remember correctly back to college, the psychrometric equations are made up of crazy sequences, and the point of the charts are that they are way less effort than solving the eqns each time. Try the Ashrae handbook fundamentals, they're the best referance for anything to do with hvac.

0