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  1. #1
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    Superheat - again!



    You know what guys, I was asked a question about this today just as I was going home and didn't know how to answer.

    I've always used deg F when calculating s/heat, as that's just the way I was taught.
    I was asked why we don't use dec C in the UK,, as it's generally C that we use for most temp measurements here.

    So, lets say we are working in F and looking for a target s/heat on a system of 7f (evaporator), would we still be looking for 7 if converting the pressure / temps to C. In other words, it's just the numerical value we require?

    I feel daft asking, but it's never crossed my mind before really.



  2. #2
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    Brian_UK is online now Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
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    Re: Superheat - again!

    Nope, if you work in F stay in F.

    Best to work in C as one degree C is near enough one degree Kelvin which is what you should be measuring your superheat or subcooling in.
    Brian - Newton Abbot, Devon, UK
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  3. #3
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    Re: Superheat - again!

    Ignorance on this side of the pond?
    I thought one degree C was the same as Kelvin.
    Then i looked at Wikipedia and am now confused.
    Help a Yank out here!
    Last edited by NH3LVR; 18-12-2017 at 11:16 PM. Reason: Grammer

  4. #4
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    Re: Superheat - again!

    Quote Originally Posted by NH3LVR View Post
    Ignorance on this side of the pond?
    I thought one degree C was the same as Kelvin.
    Then i looked at Wikipedia and am now confused.
    Help a Yank out here!
    https://www.thoughtco.com/convert-ke...celsius-609233

    When talking kelvin normally refers to temperature difference which is same scale as deg C.
    So superheat in degrees kelvin refers to degrees C.

  5. #5
    Brian_UK's Avatar
    Brian_UK is online now Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
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    Re: Superheat - again!

    Quote Originally Posted by NH3LVR View Post
    Ignorance on this side of the pond?
    I thought one degree C was the same as Kelvin.
    Then i looked at Wikipedia and am now confused.
    Help a Yank out here!
    Yes, you are of course correct. I was being rather loose with the language, sorry.
    Brian - Newton Abbot, Devon, UK
    Retired March 2015
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