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Heat Pumps

  1. Dec 11, 2014 #1
    Hi experts... I'm new to this forum and want to know that why does COP(Coefficient of Performance) in heat pumps depend on time?
     
  2. jcsd
  3. Dec 11, 2014 #2

    DrClaude

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    Staff: Mentor

    What do you mean by "depends on time"? Are you asking why a heat pump's COP decreases as it ages?
     
  4. Dec 11, 2014 #3
    Yes you got it right. Please explain
     
  5. Dec 11, 2014 #4

    DrClaude

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    Staff: Mentor

    I don't have anything specific to say. It's like for any other machine: wear and tear leads to reduced efficiency.
     
  6. Dec 11, 2014 #5
    okay thanks
     
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