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  1. #1
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    Cooling capacity??



    Hi all,

    I'm currently studying building services and have a refrigeration exam on the way.

    Some advised areas to revise and understand are:

    Refrigerant effect

    Coefficient of Performance

    Compressor power

    Cooling capacity.

    I am happy with the first 3 however, I have searched everywhere I can think of, for the cooling capacity without luck. Can anyone point me in the direction of where I can find out about it. As I thought it was the same as the refrigerant effect.

    The question is based on cycles, and all I could find in books and the internet is about plant sizing which from the question im sure is a different meaning.

    Thanks Greg.



  2. #2
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    Re: Cooling capacity??

    Cooling capacity is the amount of heat that can be removed by cooling unit.

  3. #3
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    Re: Cooling capacity??

    Once I found the answer I realised I was looking far to deep.

    As you said Chemi, the amount of cooling work done.

    Mass flow rate x Refrigerant effect.

  4. #4
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    hookster is offline Veteran Poster I am starting to push the Mods: of RE
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    Re: Cooling capacity??

    You need to go back to your basics here.
    I would assume they will base questions on the Log P-H diagram(Mollier). This is the basis to the refrigeration simple cycle.

    The refrigeration consists of the following states.
    Polytropic Compression
    Isobaric cooling (Supercooling included)
    Isenthalpic expansion
    Isobaric expansion - This is your cooling capacity and corresponds to your net cooling capacity.
    I love the smell of Ammonia in the morning!

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