View Poll Results: when will we get to 4,000 posts?

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  • june 12

    34 24.82%
  • june 20

    31 22.63%
  • july 1

    26 18.98%
  • july 12

    46 33.58%
  1. #23843
    Join Date
    Jan 2007
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    Vancouver Island, B.C.
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    Quote Originally Posted by jpsmith1cm View Post
    Got to play with a neat thing today.

    It's being called a "Non-compression cascade system"

    Basically, a thermosyphon.

    The rack system runs a plate heat exchanger. In the secondary side, there is refrigerant that is condensed by the plate HX, separated through a phase separator. The liquid runs down into the coils (no metering device), boils off.

    The vapor rises back up, through the phase separator and back into the plate HX.

    All flow in the secondary is natural. No pumps or other means to move fluid.

    All in all, a pain in the A$$ because you have to add a little gas and wait for it to react. Slow, painful and tedious, but there are 2 of them running happily away after today.
    Sounds similar to the old KeepRite Q-pipe system...
    "The quality you deserve is not expensive---it's priceless"

  2. #23844
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    Sep 2008
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    Western PA
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    Quote Originally Posted by Doug Lockhart View Post
    Sounds similar to the old KeepRite Q-pipe system...
    Never seen one, nor have I heard of it.



    I DID, however, discover that the 1200 does just as AWESOME of a job measuring approach temperature as it does measuring superheat.

  3. #23845
    Join Date
    Jan 2007
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    Vancouver Island, B.C.
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    Quote Originally Posted by jpsmith1cm View Post
    Never seen one, nor have I heard of it.



    I DID, however, discover that the 1200 does just as AWESOME of a job measuring approach temperature as it does measuring superheat.
    What refrigerant did they use?

    Here's the heat pipe....basically individual pipes part filled with refrigerant and the outgoing heat boils it and it ascends up the tilted pipe to the cold air stream which condenses and it runs back down to the the 'hot' side....again
    http://www.industrialair.com.au/docu...a_brochure.pdf
    "The quality you deserve is not expensive---it's priceless"

  4. #23846
    Join Date
    Sep 2008
    Location
    Western PA
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    In this case, 404a on both sides of the system.


    The biggest pain is charging it. There is not a good and clear-cut method for determining the charge for the secondary side.

    They call it "trial and observation"

    I call it "gas it and guess"

  5. #23847
    Join Date
    Sep 2008
    Location
    Western PA
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    Now that I read through that, I have seen a heat pipe, once.

    I have no idea if it was working or not as I had no real idea what I was actually looking at nor did I have any real idea of how to test it.

  6. #23848
    Join Date
    Jan 2007
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    Vancouver Island, B.C.
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    Quote Originally Posted by jpsmith1cm View Post
    Now that I read through that, I have seen a heat pipe, once.

    I have no idea if it was working or not as I had no real idea what I was actually looking at nor did I have any real idea of how to test it.
    Delta Ts only across each coil
    "The quality you deserve is not expensive---it's priceless"

  7. #23849
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    Sep 2008
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  8. #23850
    Join Date
    Sep 2004
    Posts
    13,907
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    SUHWEEEEEEEEEEEEEEEEEEEEEEEEET!!!!!!!!!!!!!!!!!!!! !





    Quote Originally Posted by jpsmith1cm View Post
    Got to play with a neat thing today.

    It's being called a "Non-compression cascade system"

    Basically, a thermosyphon.

    The rack system runs a plate heat exchanger. In the secondary side, there is refrigerant that is condensed by the plate HX, separated through a phase separator. The liquid runs down into the coils (no metering device), boils off.

    The vapor rises back up, through the phase separator and back into the plate HX.

    All flow in the secondary is natural. No pumps or other means to move fluid.

    All in all, a pain in the A$$ because you have to add a little gas and wait for it to react. Slow, painful and tedious, but there are 2 of them running happily away after today.
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

  9. #23851
    Join Date
    Jun 2004
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    Location:Raleigh NC
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    9,962
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    Quote Originally Posted by supertek65 View Post
    SUHWEEEEEEEEEEEEEEEEEEEEEEEEET!!!!!!!!!!!!!!!!!!!! !
    was think the same thing.

    But it's much more fun when you don't have a customer looking at you wanting it up ASAP and also getting ready to b!tch about the bill
    If you help others then you are a Success

  10. #23852
    Join Date
    Jun 2004
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    Location:Raleigh NC
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    busy 2 days
    If you help others then you are a Success

  11. #23853
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    Jan 2007
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    Vancouver Island, B.C.
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    Quote Originally Posted by fcs View Post
    busy 2 days
    You and Karen been in bed for 2 days with a case of whipped cream, a 20 litre can of mazola oil and matching bowling balls....?
    You dirty pig you??!!!!
    "The quality you deserve is not expensive---it's priceless"

  12. #23854
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    Sep 2008
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    Western PA
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    Quote Originally Posted by Doug Lockhart View Post
    You and Karen been in bed for 2 days with a case of whipped cream, a 20 litre can of mazola oil and matching bowling balls....?
    You dirty pig you??!!!!
    I've got a dirty, dirty mind, but I just cannot think of anything you would do in bed with whipped cream.


  13. #23855
    Join Date
    Nov 2006
    Location
    Southeastern Pa
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    Good morning, Bret and everyone!

    Just what I needed to start off...thoughts about my whipped cream days......
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







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