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Reverse calculation of COP

  1. Sep 14, 2012 #1

    Low-Q

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    Gold Member

    Hi,

    I wonder how you calculate the "inverse COP" of a heat exchanger. Say a heat exchanger has a COP 4 at 0 degrees C. Under that condition the heat exchanger consumes 1kW, and deliver 4kW heat.
    So if you now turn it off, and instead heat one side and cool the other side with external heat source. I assume there will be a pressure difference between hot and cold, so the pump is forced to give - by start running. Is the COP of this running pump 1/4 or is it less or more?

    How is the "inverse figures" for a COP 3, or 5 heat exchanger which under normal use consumes 1kW?

    PS! This is not homework. I am too old for school ;-)

    Br.

    Vidar
     
  2. jcsd
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