Results 1 to 8 of 8
  1. #1
    Join Date
    Oct 2005
    Location
    IL
    Posts
    15
    Post Likes

    Effect of Ambient Temperature

    Does anyone know or has anyone seen any studies on the effect of lowering the ambient mechanical room temperature on the efficiency / performance of a chiller ? Room currently has little ventilation so it gets hot (over 85 degrees). A suggeston was made to install an exhaust fan which would pull plant air (at 75 degrees) into the room,
    steve g

  2. #2
    Join Date
    Dec 2008
    Location
    Dixiana, AL
    Posts
    2,611
    Post Likes
    Only time it will effect performance is if you have power or control electronics, or open drive motors that are suffering due to excess heat.

    Efficiency may degrade somewhat on open drive motors if the temps get way up, but I don't know that you'd notice it on a power bill.

    Now, let's talk about something that the efficiency drops off hard on as the mechanical room ambient goes up. That something would be ---------- ME!!

  3. #3
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    2,213
    Post Likes
    The higher the ambient the more beer is consumed. Then the efficiency goes down the tubes ,usually to the point slightly above a coma .
    The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    In the garage , greasin', oilin' . tweakin' n shinin' Roll on spring 2015 !!

  4. #4
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,743
    Post Likes
    if it is a low pressure chiller and it has an air cooled purge, a higher ambient would actually help it (to a point).

    an air cooled drive would be affected

    i would think that in most cases, the ambient temps are a technicality and probably do not affect the equipment enough for any of us to notice.

    now, humidity could be another issue.
    Once you go black...you never go back to galvanized.

  5. #5
    Join Date
    May 2008
    Location
    Central Pennsylvania
    Posts
    471
    Post Likes
    Two summers ago I ran a call to a facility that couldn't keep there boilers from "going off on low water". That was the warmest boiler rm / mech room I was ever in. Arrived onsite and found the boiler feed pumps going off on ambient temperature. Thats when you know it's time to start fixing steam leaks and ventilation problems. Graham is right, I'm pretty sure my beer consumption was elevated that evening!

  6. #6
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,449
    Post Likes
    Jayguy,what am I missing?How does high ambient help a low pressure chiller with an air cooled purge ?

  7. #7
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,743
    Post Likes
    Quote Originally Posted by Nuclrchiller View Post
    Jayguy,what am I missing?How does high ambient help a low pressure chiller with an air cooled purge ?


    nice catch...my BRAIN FART! i was thinking about "higher sat cond temps" help purge operation...which is true if it is "higher sat cond temps of the chillers refrigerant"...not "higher sat cond temps of the purges refrigerant"
    Once you go black...you never go back to galvanized.

  8. #8
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,449
    Post Likes
    Hey,no problem.I'm sure I needed the brain exercise trying to figure that one out,anyhow.Actually, I thought I was about to learn something,other than I'm not the only one who has these doggone brain farts!

Posting Permissions

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

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.
Comfortech365 Virtual Event