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Thread: Glide/Superheat

  1. #1
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    Glide/Superheat



    Hello Everone
    I am looking for a few opinions on Setting TXV superheats on Refrigerants with a wide Glide such as the 407 blends. I work primarily on larger Supermarkets and notice a few differing opinions on setting TXV's
    * I have heard people using the Dew/Bubble average. (which is what I use for setting Pressure controls/high side valves)
    * I have heard people using the DEW and setting valves 6-8 deg F ( or to the MFG's spec)

    I have been setting Superheats with the DEW temp, and I usually set the valves on the lower side 4-6 deg F .


    * When the first droplet of vapor occurs (Dew Temperature)
    * When the first bubble of vapor happens (Bubble Temperature)
    Any Comments are appreciated.



  2. #2
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    Re: Glide/Superheat

    See attached. You should find it helpful.

    http://www.refrigerants.com/pdf/Blends%20Tutorial.pdf

  3. #3
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    Re: Glide/Superheat

    Quote Originally Posted by passandscore View Post
    See attached. You should find it helpful.

    http://www.refrigerants.com/pdf/Blends%20Tutorial.pdf
    Thank You, it is a good Overview.

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