Results 1 to 12 of 12
  1. #1
    Join Date
    May 2012
    Posts
    2
    Post Likes

    Condenser Approach Temperature

    Hi guys. Is there any verification of 1°C of CAT reduction will result in 5% energy saving of chiller. Please let me know whether this is true. Thank you guys.

  2. #2
    Join Date
    Sep 2011
    Location
    BAJA AND CALIFORNIA
    Posts
    101
    Post Likes
    what machine we talking about ??? you need a point of departure here in your question is not very clear , but let me say this , the aproach help you to know if the unit is working properly as the design indicate , now if you have a unit that is working now with fouling problems we are talking of something diferent.
    your question need to be more specifyc

    regards

  3. #3
    Join Date
    May 2012
    Posts
    2
    Post Likes
    Thank Ess Chill Water. Actually i working with a company promoting automatic tube cleaning system using sponge ball to ensure condenser tubes of water-cooled chiller always free from fouling. So we focus on the condenser side only. some of my client ask me to study how much can they save by implementing this auto tube cleaning system. my calculation is based on how much we can reduce the CAT readings after the system installation.

    Based on a study, this system can save about 18% from the chiller electricity consumption. So i need to verify the percentage saving for 1 degree C reduction of CAT. it is applicable to any water-cooled chiller, TRANE, YORK. and any type, centrifugal, rotary etc.. Tq.

  4. #4
    Join Date
    Sep 2011
    Location
    BAJA AND CALIFORNIA
    Posts
    101
    Post Likes
    Anisrahim
    sounds like ball tech technology i just use with york also we use the brush from pensecola technology, Please put your email address in your profile, they are not allowed to be in post, thank you. please send me the information of your product , i will give you some tips for how to justify the equipment with calculate the fouling factor and ROI where you guys located
    Regards
    Last edited by beenthere; 05-15-2012 at 05:54 AM. Reason: email address

  5. #5
    Join Date
    Mar 2003
    Posts
    7,348
    Post Likes
    oh no, not the balls again! had enough of them in the eighties. the old backflush system used to force the balls past the cages, and out into the system, right up until they clogged the condenser water strainers

    how are the balls going to lower design approach? all they will do is keep tubes clean for a while. any way, keeping the approach at design will keep costs down. Any reduction in cleanliness will effect energy consumed, but it varies per chiller. not nearly enough info.

  6. #6
    Join Date
    Jul 2007
    Location
    The Hot South
    Posts
    1,656
    Post Likes
    Hey ESS CHILL WATER, your not supposed to put your email address on the forum. There are automated computer programs that will seek out email addresses and overload the server if the email address is in the forum. I'm sure the moderators will be deleting it soon.

  7. #7
    Join Date
    Sep 2011
    Location
    BAJA AND CALIFORNIA
    Posts
    101
    Post Likes
    thanks for the warning R123 i will take in consideration

    regards

    oscar

  8. #8
    Join Date
    Jan 2004
    Location
    PA
    Posts
    72,803
    Post Likes
    Please put your email address in your profile, they are not allowed to be in post, thank you.

    It has been removed from your post.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  9. #9
    Join Date
    Jul 2016
    Posts
    1
    Post Likes
    Dear Sir,

    Can you advise me about this case
    Thx in advance sir.

  10. #10
    Join Date
    Apr 2013
    Location
    La Crosse, Wisconsin
    Posts
    40
    Post Likes
    The approach temperature affects the overall pressure differential that the compressor has to handle. Every design behaves a bit differently. Screw and scroll compressors are positive displacement and do not have as large of an efficiency impact on additional head pressure. That is why we can use medium and high pressure refrigerants in those compressors. The pressure increase for every 1 degree on high pressure is much greater than low pressure. Centrifs are dynamic compression and a degree higher approach will have a larger affect than screw or scroll. Again it also depends on the refrigerant. for one degree increase on low pressure refrigerants, the pressure increase is much less than on a medium pressure units. For r123, every 1°F of approach increase is around 2% efficiency loss (this also depends on if there is a VFD or not). A unit with a VFD will see even greater efficiency savings when you reduce the pressure. The machine that would see the greatest benefit of reduced head pressure (lowering approach temperature) would be a centrifugal chiller using r134a that has a VFD installed.

  11. #11
    Join Date
    Apr 2003
    Location
    St. Louis
    Posts
    131
    Post Likes
    How can a foam ball going through a enhance tube clean it without spiralling?

  12. #12
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,963
    Post Likes
    Quote Originally Posted by servicefitter View Post
    How can a foam ball going through a enhance tube clean it without spiralling?
    IMO, those balls are only effective in cleaning the chiller owner's wallet...

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.
Comfortech 365