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  1. #1
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    Saturation temperatures



    When looking at saturation temperatures what rule of thump are you guys using?

    Saturated condensing temperature 10-15c above ambient

    saturated evaporating temperature 10c below space temp ( cold rooms/ freezers)

    Just curious what you guys are using.
    thanks.



  2. #2
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    Re: Saturation temperatures

    .

    With air cooled

    condenser is 15k above ambient and evaporator is 10k lower than air off.

    So rule of thumb. Condenser 15 higher than air on, evaporator 10 lower than air off.

    Rob

    .
    .. ... -. .----. - / -- --- .-. ... . / -.-. --- -.. . / --. --- --- -..

  3. #3
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    Re: Saturation temperatures

    Read this on this forum not sure who posted it

    Here are some figures :

    Tai ----- air entering temperature
    Tao -----air outlet temperature
    Te ------Evaporating temperature
    Twi ------water entering temperature
    Two-------water outlet temperature
    Tc---------condensing temperature



    Air conditioning (evaporator) :
    Tai-Tao = 8 to 10 C
    Tai-Te=16 to 20C
    Tao-Te=8 to 10C

    Refrigeration (evaporator) :
    Tai-Tao = 3 to 5 C
    Tai-Te=5 to 10C (evaporator TD) take low TD for high relative humidity
    Tao-Te=3 to 5C

    Water Chiller (evaporator) :
    Twi-Two=5C
    Twi-Te=10C (evaporator TD)
    Two-Te=5C

    Air cooled condenser :
    Tao-Tai=5 to 10C
    Tc-Tao=5 to 10C
    Tc-Tai=10 to 20C (condenser TD) take low TD in design for hot climate so the condenser will be bigger.

    Water cooled condenser :
    Two-Twi=5C
    Tc-Two=10C
    Tc-Twi=15C (condeser TD)

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