Results 1 to 4 of 4

Thread: r409

  1. #1
    Join Date
    Jul 2005
    Location
    australia
    Age
    71
    Posts
    10
    Rep Power
    0

    Exclamation r409



    doing refit on supermarket at moment systems have r409 on med temp finding gas has some very funny traits to it,pressure drops come and go,liquid levels vary gas seems to take long time to settle down ,people say its a hell of a gas to use because of glides any one else fund these problems



  2. #2
    Join Date
    Feb 2001
    Location
    Tampa Florida
    Posts
    1,086
    Rep Power
    25

    Re: r409

    I know there are some wide glides with R409, but I am wondering if you have a witches brew of some other refrigerants in there. I have a small rack operating a kitchen in a large hotel and do not see the fluctuations you are seeing.

  3. #3
    Join Date
    Oct 2005
    Location
    IRAN
    Age
    53
    Posts
    894
    Rep Power
    19

    Re: r409

    HI there,

    Maybe there is leak and the the remaining refrigerant is not R409 anymore.
    OR there was a comisioning problems from the beginning. Like wrong refrigerant charging method or oil contamination ,....

    Cheers
    Even Einstein Asked Questions

  4. #4
    Join Date
    Mar 2007
    Location
    South Africa
    Posts
    230
    Rep Power
    18

    Re: r409

    You get R409A and R409B.

    Refrigerant Property Report
    ISO Number R409A
    Chemical Name R22/R124/R142B
    Formula 60/25/15
    Critical Point
    Temperature 109.0 °C
    Pressure 4330 kPa
    Boiling Point
    BP (at 1 atm) -34.4 °C
    Glide (at BP) 8.6 °C

    You are right, it has around the highest glide of the commonly documented refrigerants.

    Even so, it should be stable in a system. I suspect that there is another problem here.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •