PSYCHROMETRIC EQUATIONS

[jmalesi]

Hi:

i AM trying to develop a software for my calculator, but I need the equations from Tdb, Twb, HR, v, h, P, given two of these values, calculate the others.. I know there are a lot of program, excel spreadsheets and all that online, but I need to to this for my CALCULATOR..

Can anyone help me¿? does somebody has the equations?

If it helps... I will work only in ENGLISH UNITS

 

[Transient1]

If you know where all the excel spreadsheets and such are, then why not just download one and use the equations to program your calculator?

 

[jmalesi]

they are protected... so.. I cannot see the code the use to program de cells...

 

[CarlB]

Some equations at

http://www.ageng.ndsu.nodak.edu/envr/PsycEqns.htm

 

[quark]

ASHRAE Handbook of fundamentals has these equations. It is pretty easy for given DB and RH but I have been trying to do that when DB and WB are given. The calculations include iteration at 3 individual steps and I am still struggling to overcome the circular reference error.

Good luck,