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  1. #1
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    Chiller Plant Optimization

    Does anybody know where I can get information about optimization strategies for a chiller plant? Thanks in advance.

  2. #2
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  3. #3
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    Thanks Digo!

  4. #4
    Join Date
    Dec 2006
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    What? Who? Where?
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    Tridium based solution:

    http://optimumenergyco.com/

    kontrol out
    "Open is as open does." - Forrest Gump
    "Can't we all just get a Lon?" - Garry Jack
    "BACnet: integration or interrogation?" - The Janitor
    "Open protocols? You can't handle open protocols!" - Nathan R. Jessup
    “What’s that? Aaa… open protocols? Don’t talk about…. open protocols? Are you kidding me? Open protocols? I just hope we can hardwire an interface!” - Jim Mora http://www.youtube.com/watch?v=U7fjDS0jKiE

  5. #5
    Join Date
    Jan 2002
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    Fort Worth\Dallas, Texas
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    Good luck finding something affordable if you are looking for a packaged solution. I have looked at optimum. Building Logix also has a Tridium solution.

    I am currently trying to implement this myself on a project with AX if anyone has done this before. Im not just talking about the condenser reset either, that is easy. I am talking more along the lines of the Hartman Loop.
    Go Rangers!

  6. #6
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    Aug 2009
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    Quote Originally Posted by The Reaper View Post
    Does anybody know where I can get information about optimization strategies for a chiller plant? Thanks in advance.
    Something to think about is that there is a LOT of variables in a chiller plant. To truly optimize the whole plant, you must know how all those variables will affect the system. (Things like Chiller efficiency over it's load range, and how this changes with condenser water temperature. The electrical use for the Cooling Tower fans over their range, etc).

  7. #7
    Join Date
    Dec 2007
    Location
    Connecticut
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    Quote Originally Posted by CraziFuzzy View Post
    Something to think about is that there is a LOT of variables in a chiller plant. To truly optimize the whole plant, you must know how all those variables will affect the system. (Things like Chiller efficiency over it's load range, and how this changes with condenser water temperature. The electrical use for the Cooling Tower fans over their range, etc).
    I agree 100%. I think I am going to leave the condenser water alone for now. I will be putting VFD's on the towers and condenser water pumps. The thing that just kills me is they had a plate and frame for free cooling in the winter and they ripped it out! Now they are complaining about having to run the chillers all the time.

  8. #8
    Join Date
    Feb 2005
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    1,218
    yeah, pretty smart move.

  9. #9
    Join Date
    Aug 2009
    Location
    Jurupa Valley, CA
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    Quote Originally Posted by The Reaper View Post
    I agree 100%. I think I am going to leave the condenser water alone for now. I will be putting VFD's on the towers and condenser water pumps. The thing that just kills me is they had a plate and frame for free cooling in the winter and they ripped it out! Now they are complaining about having to run the chillers all the time.
    Yeah, the biggest change in chillers over the last 10-15 years has been the capability to run with much lower condenser temps. With the older chillers, as you've already eluded to, there really isn't much you can do for optimization, aside from resting on the chilled water supply temp based on zone demand (the goal should be for the most open chilled water valve in the facility to be near 100% open).

    The old chillers can't handle the newer methods for increased efficiency, like lower cond temps, variable primary flows, etc.

  10. #10
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    Exactly!
    Go Rangers!

  11. #11
    Join Date
    Apr 2007
    Location
    San Diego, CA
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    This paper from Mr Hartman himself tells a bit more about one of the methodologies (Variable primary flow):
    http://www.hartmanco.com/pdf/p04.pdf

    There's even a code snippet with some if/then/else statements in there. I'd like to see an actual sequence of operation for a Hartman Loop.

  12. #12
    Join Date
    Jan 2002
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    Fort Worth\Dallas, Texas
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    Yes, I would too Digo.
    Go Rangers!

  13. #13
    Join Date
    Jun 2010
    Location
    New Orleans
    Posts
    81
    I'm trying out the CPO10 in CCT on one of our smaller plants, it reads to be promising as far as retrofit of older equipment.

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