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State of Refrigerant

  1. Jul 12, 2018 #1
    WHERE is the refrigerant stored in the refrigeration system when the system is in OFF and
    in WHAT state Gas or Liquid ???
     
  2. jcsd
  3. Jul 12, 2018 #2

    stockzahn

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    After switching off the cooling system the refrigerant evaporates, increasing the pressure in the closed system and therefore also the temperature. After a certain time the temperature of the refrigerant corresponds to the ambient temperature. Depending on the type of coolant, its state could be in the two-phase regime (at vapor pressure corresponding to the ambient temperature) or it could be entirely evaporated and the system contains only gas.
     
  4. Jul 12, 2018 #3

    russ_watters

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    ...and it just remains in the tubes.
     
  5. Jul 12, 2018 #4
    Thanks
    But where will the two phase regime stay
    Within the compressor or the tubes
     
  6. Jul 12, 2018 #5
    But once it reaches the vapor pressure, some of it becomes liquid and if so will the liquid remains in the tube ????
     
  7. Jul 12, 2018 #6

    russ_watters

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    Sure. Where else could it go?
     
  8. Jul 13, 2018 #7
    @ russ_watters
    Why can't the liquid flow to the compressor cavity.
    Why then the ac mechanics advise us not to tilt the compressor during shifting or relocating. They say it is the compressor that stores the gas during OFF.
    Please expalin this part.
     
  9. Jul 13, 2018 #8

    stockzahn

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    The refrigerant normally is stored in all parts of the cooling system (compressor, vaporizer, ...) .If the coolant is in two-phase region, part of the liquid phase could enter the compressor, if, after switching it off and turning/shifting/tilting the device, one of the valves is not tight (or even open) - this especially concerns the inlet valve, which is constructed to open, if the pressure outside of the compressor exceeds the pressure in the inside.
     
  10. Jul 13, 2018 #9

    256bits

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    I think it has more to do with the possibility of the lubricating oil flooding the compressor chamber, or entering into the condenser in bulk.
    If the bulk of oil is pushed along and enters the capillary tube then more problems.....as it works it way through
     
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