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  1. #1
    Join Date
    Feb 2005
    Location
    Dothan, Al
    Posts
    3,453
    What is the 'one' purpose of having a compressor in a refrigeration system??? In other words, what is the compressors designed function.

    I used to ask my class this question, on a test, after taking the basic refrig. course.

    Richard

  2. #2
    Join Date
    May 2005
    Location
    Mississippi
    Posts
    102

    Talking

    My guess is to "Compress"? I give up!

    Regards

  3. #3
    Join Date
    Sep 2003
    Location
    Ocean County, N.J.
    Posts
    485
    The compressor is a vapor pump. It removes the unwanted heat from one place and transfers it to another place where it makes little or no difference.

  4. #4
    Join Date
    May 2005
    Location
    Mississippi
    Posts
    102
    I was somewhat being a smart-a** in my first reply.

    From the hip and very quickly, here is my answer.


    The compressor compresses the refrigerant gas. This raises the pressure of the refrigerant and temperature,the refrigerant then travels through the condensing coils allowing the refrigerant to dissipate the heat of pressurization.

    As it cools, the refrigerant condenses into a liquid form and flows through the expansion valve/orifice.

    When it flows through the expansion valve/orifice, the liquid refrigerant is allowed to move from a high-pressure to a low-pressure area (evap. coil), so it expands and evaporates. In evaporating, it absorbs heat, making it cold.

    The evap coil inside the ahu/refrig/whatever allow the refrigerant to absorb heat, making the air downstream of the coil cooler. The cycle then repeats.

    Of course, this is completely backwards for heat pump in heating mode.


    However, I still stand by my first answer; "to compress"

    Have a great weekend everybody.


  5. #5
    Join Date
    Mar 2004
    Location
    Gone
    Posts
    5,340
    The compressor is designed to “circulate” the refrigerant in a closed system.

  6. #6
    Join Date
    Feb 2005
    Location
    Dothan, Al
    Posts
    3,453
    Keep in mind - is it necessary to have a compressor to provide refrigeration ?

  7. #7
    no you do not need a compressor for a refrigeration system.

  8. #8
    Join Date
    Jul 2005
    Location
    Orange County, NY
    Posts
    936
    The compressor does one thing

    Provides conditions necessary for a refrigerant to change state.
    Core

  9. #9
    Join Date
    Mar 2005
    Location
    Suppy NC
    Posts
    4,513
    compresses gas from a low presure to liquid at a higher pressure. this is its only function

  10. #10
    Join Date
    Mar 2005
    Location
    Suppy NC
    Posts
    4,513
    sorry not gas but vapor

  11. #11
    Join Date
    Jun 2004
    Posts
    146
    The one purpose of the compressor is to increase the temperature of the vapor.

  12. #12
    Join Date
    Jun 2004
    Posts
    146
    The way I see it...

    1. compressor - increase refrigerant temperature
    2. condenser - release heat
    3. expansion device - decrease refrigerant temperature
    4. evaporator - absorb heat

    The change in refrigerant pressure is a side effect and not a purpose or goal of any component of the refrigeration system.

  13. #13
    Join Date
    Feb 2005
    Location
    Dothan, Al
    Posts
    3,453

    redskin

    Where did you get yur training at ??
    Or who taught you that ??

    Richard

    ps - where you from?

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