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Thread: Natures cooling

  1. #1
    Join Date
    Jun 2001
    Location
    Michigan
    Posts
    12,077

    Natures cooling

    Tyler came up with this name for marketing. And so this is why I call it that. But you see this done now a days and they call it all kinds of stuff.

    take drop leg temp value and if it falls below a certain point, we open an LLSV to the liquid manifold, essentially putting the receiver into a surge configuration.

    The question is, based on all the low ambient strategies were talking about. When could this be put on a rack and deployed?

    If you put it on the rack, and it has this other stuff for low ambient. You see specs say set it at 65, or somewhere in that area.

    My number one piece of info I need is. What TXV's do I have. How low a liquid temp/pressure can I go and sufficiently feed all my loads with correct liquid condition.

    And then I just kinda go backwards. Okay so this is my basement. Not beyond this low. Okay. What toys do I got on my system and how do I put them in order to DEFEND against dropping. I look at it as a battle with Ambient. In what sequential order do I use my equipment to stage this battle with ambient.

    And the mistake I made for a number of my early years is that often 1 or more strategies are working together. not in step sequentially necessarily all the time. A perfect example would be, if your stacking, your likely raising SCT of the liquid in the receiver because your using high temp super heated vapor to keep the pressure up when the ORD is actuating. It's doing that because were stacking liquid in the condenser with hold back. But that liquid now is gonna get nice and subcooled. Nice and cold. So why send that nice cold sub cooled liquid to the receiver and change it's condition, why not bypass that receiver and send it out the valves.

    I was trying to make an example out of, if seeing all this stuff on racks, instead of thinking they are always sequential steps, some components are sort of parallel duty if you will. And when I finally made this connection in my brain, it helped me to understand more clearly.

  2. #2
    Join Date
    Jan 2006
    Location
    DFW Metroplex
    Posts
    4,910
    Why the interest in what type of TXV, Shane? A valve is a valve is a valve - and all it needs is a solid column of liquid....right?
    "The problem is the average person isnt tuned in to lifelong learning, or going to seminars and so forth. If the information is not on television, and its not in the movies they watch, and its not in the few books that they buy, they dont get it" - Jack Canfield

  3. #3
    Join Date
    Nov 2008
    Location
    Altamont, IL
    Posts
    373
    I have a couple of tyler NC-2 racks and they are almost a critical charge system. Do we even need the receiver tank? I suppose in high ambient season we would be raising head unnecessarily. lowering the efficiency.
    In GOD We Trust

  4. #4
    Join Date
    Feb 2008
    Location
    California
    Posts
    2,065
    That is a really cool story Shane, thanks for sharing it.

  5. #5
    Join Date
    Apr 2012
    Location
    winnipeg
    Posts
    1,330
    i could barely read it never mind understand it....lol
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  6. #6
    Join Date
    Oct 2011
    Location
    East Charlotte Area of NC
    Posts
    421
    Quote Originally Posted by carmon View Post
    i could barely read it never mind understand it....lol

    That's strange... I understand exactly what he is talking about

    I can't fix it if it won't stay broke..

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