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  1. #1
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    Ecological COP and Availability Loss



    Can anyone please help by defining the two related terms in the title:
    'Ecological Coefficient Of Performance' and 'Availability Loss'

    From the paper: 'Performance optimization of irreversible refrigerators based on a new thermo-ecological criterion':

    "Performance conditions for the ECOP and COP criteria are the same yet they have different meanings. The COP gives information about the necessary power consumption in order to produce a certain cooling load while the ECOP gives information about the entropy generation, i.e. the loss rate of availability."

    What exactly does 'Ecological' COP mean and what is the 'Availability Loss' ?

    Thanks ahead



  2. #2
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    Re: Ecological COP and Availability Loss

    Try reading this, you may regret it....
    https://www.google.co.uk/url?sa=t&rc...49784469,d.ZGU
    Brian - Newton Abbot, Devon, UK
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  3. #3
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    Re: Ecological COP and Availability Loss

    That looks very useful, cheers Brian. I have read one paper on it but it didn't even explain the term and not easy to get the exact meaning but i will read through that as well.

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    Re: Ecological COP and Availability Loss

    James;;

    Availability, in thermodynamics jargon, refers to the ease by which energy sources may be utilized. It has been many years since I did those horrible homework assignments so I cannot remember even the simplest of equations.

    Here is the example I remember: The oceans are the world's largest thermal source. The availability of this energy is low because the effort to extract it outweighs it's value. A hot spring would have high availability if you need one and it happens to be nearby.

    ECOP and availability loss are terms I am either unfamiliar with or did my best to forget. Availability was covered in the last week of a particularly difficult class. My brain was already full and we were told availability would not be addressed on the final exams.

  5. #5
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    Re: Ecological COP and Availability Loss

    Thanks for your knowledge Doug, hope I didn't evoke too many painful memories . I will remember that example as well. I think ECOP is quite a new term from what I can gather, probably why it's hard to find anything on it for me. cheers

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