Results 1 to 9 of 9
  1. #1
    Join Date
    Mar 2005
    Location
    Belgium
    Age
    58
    Posts
    110
    Rep Power
    20

    Sporlan subcooling valve



    Hi ,

    does anyone have something on this valve. It seems to be used in milk cool tanks (Mueller?) and some AC/HP application.
    I have googled but was not able to find anything. (only Sporlan types BS and CS ?). The sporlan/parker website did not help eather.
    A data sheet or even a few words on it's working principle are very welcome.
    thanks.
    B.



  2. #2
    Brian_UK's Avatar
    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
    Join Date
    Mar 2001
    Location
    Dorset
    Age
    76
    Posts
    11,192
    Rep Power
    60

    Re: Sporlan subcooling valve

    Do you have any form of identification on the valve ?

    I can only find BS an CS as well....
    Brian - Newton Abbot, Devon, UK
    Retired March 2015

  3. #3
    Join Date
    Mar 2005
    Location
    Belgium
    Age
    58
    Posts
    110
    Rep Power
    20

    Re: Sporlan subcooling valve

    Quote Originally Posted by Brian_UK View Post
    Do you have any form of identification on the valve ?

    I can only find BS an CS as well....
    I do not have such a valve. I just got a customer requesting such a valve. He claim:
    - it is used on the condensor outlet of a (Mueller) milk cool tank cooling unit,
    - it should save about 8 % energy (?????)

    I don't know what the valve looks like, neither how it works, neither how it helps to save 8 % energy ...

    Prof Sporlan briefly mmentions this valve in this post:
    http://www.refrigeration-engineer.co...p?t=968&page=2
    Last edited by BESC5240; 10-10-2008 at 09:23 AM.

  4. #4
    Join Date
    Sep 2003
    Location
    ISRAEL
    Age
    72
    Posts
    4,266
    Rep Power
    46

    Re: Sporlan subcooling valve

    Found this pdf, is that what you are looking for?

    Check the ORAR valve.
    Attached Files Attached Files

  5. #5
    Join Date
    Aug 2005
    Location
    USA
    Posts
    5,326
    Rep Power
    25

    Re: Sporlan subcooling valve

    The info Chemi provided is the only thing I can think of. It is essentially a three way valve that controls head pressure by flooding the condenser with liquid refrigerant. That would provide subcooling, but it also limits the ability of the discharge pressure to be reduced.

    I believe these valves are non-adjustable and must be selected for the refrigerant.
    If all else fails, ask for help.


  6. #6
    Join Date
    Sep 2003
    Location
    ISRAEL
    Age
    72
    Posts
    4,266
    Rep Power
    46

    Re: Sporlan subcooling valve

    Just got by email all the info from Mueller.
    Interesting little valve, works lite TEV, fully adjustable, senses the temperature on the liquid line between the condenser and the receiver.

    I will try to "cut" the relevant part from that pdf and post it here.

  7. #7
    Join Date
    Sep 2003
    Location
    ISRAEL
    Age
    72
    Posts
    4,266
    Rep Power
    46

    Re: Sporlan subcooling valve

    The subcooling valve physically resembles a thermostatic expansion valve, but its operation is radically
    different.
    Liquid refrigerant is metered and reduced to evaporative pressure as it passes through the subcooling
    valve. The subcooling valve is internally equalized to sense condenser pressure on the underside of
    the diaphragm and sensing-bulb pressure on the top side.
    At a given condensing pressure, should the sensing-bulb temperature rise, the subcooling valve
    throttles towards a closed position causing more liquid refrigerant to accumulate in the bottom of the
    condenser to satisfy the subcooling requirement.
    If the liquid refrigerant leaving the condenser is subcooled more than 14°F (7.8°C), the cooler
    temperature sensed by the bulb will cause a reduced pressure on the top of the diaphragm.
    The condensing pressure on the bottom of the diaphragm, aided by the valve spring, forces the
    subcooling valve towards the open position. This reduces the amount of liquid subcooling in the
    bottom of the condenser.
    The subcooling valve opens as the sensing bulb becomes cooler and closes as the sensing bulb
    becomes warmer. This operation is opposite from a conventional system’s thermostatic expansion
    valve.
    The sensing bulb of the subcooling valve is clamped to the liquid line leaving the condenser and
    should be mounted vertically with the capillary tube entering the bottom of the sensing bulb.
    Figure 3 - Sensing Bulb
    The subcooling valve has an internal bypass bleed port which allows a small amount of liquid
    refrigerant to bypass the valve seat. This bleed port permits the valve’s sensing bulb to sense any
    increase in subcooling even while the valve seat is closed. Such an increase causes the valve to open
    and maintain the 14°F (7.8°C) subcooling setting.
    The subcooling valve is in the closed position at start-up. Without the bleed port, the valve would
    remain in the closed position because it would never see a change in temperature at the sensing bulb
    due to a lack of refrigerant flow.
    Attached Images Attached Images
    • File Type: jpg 1.jpg (90.1 KB, 111 views)
    Last edited by chemi-cool; 11-10-2008 at 09:54 AM.

  8. #8
    Join Date
    Mar 2005
    Location
    Belgium
    Age
    58
    Posts
    110
    Rep Power
    20

    Re: Sporlan subcooling valve

    Thank you very much Chemi.
    This is exactly what I was looking for.
    (Never heard of this kind of valve before but now I can get deeper in this).
    B.

  9. #9
    Join Date
    Sep 2003
    Location
    ISRAEL
    Age
    72
    Posts
    4,266
    Rep Power
    46

    Re: Sporlan subcooling valve

    I hope to get soon the model and manufacture name and post all the info here.

    I think Sporlan is behind it.

Similar Threads

  1. Superheat and Subcooling
    By Chunk in forum Fundamentals
    Replies: 42
    Last Post: 15-01-2011, 02:24 AM
  2. Sporlan Heat Reclaim Valve
    By 750 Valve in forum Commercial
    Replies: 7
    Last Post: 05-07-2008, 03:20 PM
  3. Benji
    By benji in forum Trouble Shooting
    Replies: 29
    Last Post: 30-01-2008, 02:25 PM
  4. Subcooling & Refrigerants
    By US Iceman in forum Fundamentals
    Replies: 40
    Last Post: 29-04-2006, 02:59 AM
  5. Replies: 5
    Last Post: 16-10-2002, 12:38 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •