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

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  • june 12

    34 25.19%
  • june 20

    31 22.96%
  • july 1

    26 19.26%
  • july 12

    44 32.59%
  1. #23843
    Join Date
    Sep 2007
    Location
    NC Coast
    Posts
    2,604
    Hey Bret, Art, Frank, Doug, Sparky, JP, Heavy, and all.
    Overcast but 68 or so here today. Finished a new construction job yesterday. Due to weather, we didnt do a condenser coil on a rooftop unit today. Will probably with luck do it tomorrow.
    Hope everyone has a great day.
    Silent Service........ Death From Below!

    Somewhere in Kansas, a town found a village idiot!

  2. #23844
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
    Posts
    13,833
    good to see you bubbzzzzzzz!!!!!
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

  3. #23845
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,928
    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.

  4. #23846
    Join Date
    Jan 2007
    Location
    Vancouver Island, B.C.
    Posts
    2,485
    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"

  5. #23847
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,928
    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.

  6. #23848
    Join Date
    Jan 2007
    Location
    Vancouver Island, B.C.
    Posts
    2,485
    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"

  7. #23849
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,928
    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"

  8. #23850
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,928
    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.

  9. #23851
    Join Date
    Jan 2007
    Location
    Vancouver Island, B.C.
    Posts
    2,485
    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"

  10. #23852
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,928

  11. #23853
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
    Posts
    13,833
    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!

  12. #23854
    Join Date
    Jun 2004
    Location
    Location:Raleigh NC
    Posts
    9,667
    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

  13. #23855
    Join Date
    Jun 2004
    Location
    Location:Raleigh NC
    Posts
    9,667
    busy 2 days
    If you help others then you are a Success

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