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Thread: R134a

  1. #1
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    R134a



    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 .


    S.P

  2. #2
    Join Date
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    Excuse me dear experts;
    I made some mistakes in typing my recent thread as following corrected:
    EVA. TEMP.:45*F(DX)
    How weigh of R134a should I prepare as a charge ?
    Thanks for your attention.
    s.pirs.
    S.P

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