View Full Version : R134a

13-04-2002, 09:12 PM
My Dear experts :
There are some constant coefficients to define the refrigerant charge of typical R & AC
system which operates on R12 , R22 or similar .
but I seriously want to know a common rule of estimating mass charge of the other
refrigerants versus cycle , tonnage and inside volume of systems .
For Exp :
I have recently designed and installed a splite air conditioning system on typical passanger
car with followiong specification :
Compressor : 2pieces 4P15.2 (Bitzer)
Refrigerant :134a
Era.Temp : 45*F (Dx)
Cond.Temp : 65*F (Air cool)
Ambient Temp : 50*F
Total System Volume :120 lit
Reciever Volume : 10 lit
How weigh of R13 should I prepare as a charge ?
What is the physical property of result of oil (Ester BSE55) with air or moisture .

14-04-2002, 04:43 PM
Excuse me dear experts;
I made some mistakes in typing my recent thread as following corrected:
How weigh of R134a should I prepare as a charge ?
Thanks for your attention.