Compressor vs Condenser - what's the difference?

  1. I read about refrigerators and often a fridge has two components:
    1. compressor
    2. condenser


    The compressor compresses the vapor - what does it actually do? does it increase the temperature of the vapor?
    The condenser condenses the vapor into liquid
    and then the liquid is expanded, resulting liquid and vapor in low pressure providing coolness

    If you compresses something, don't you just make it denser hence it has more pressure?
    How can you compress something without making it denser?

    Thank you
  2. jcsd
  3. russ_watters

    Staff: Mentor

    Yes, the compressor compresses, resulting in higher temperature and density/pressure. You got that image from wikipedia - the next image down on that page gives you detail of what happens in each process.
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