Results 1 to 4 of 4
  1. #1
    Join Date
    Jan 2006
    Location
    Valrico, Florida
    Posts
    517
    Rep Power
    19

    Energy Management



    Does anyone have any guidelines or checklists for energy management / cost reduction for refrigerated warehouses?



  2. #2
    Join Date
    Aug 2005
    Location
    USA
    Posts
    5,326
    Rep Power
    25

    Re: Energy Management

    HI nh3wizard,

    I don't know off any checklists but I can offer the following guidelines:

    1) Get the discharge pressure down. Depending on your system installation and requirements you should be able to operate as low as 100 psi (6.89 bar g) or lower when the wet bulb temperatures are low. You may have some limitations that will not allow you to decrease too far.

    2) Use VFD's on the condenser and evaporator fans.

    3) get the suction pressure as high as possible.

    4) keep the screw compressor(s) fully loaded to at least 80-90%. This can cost you some big money ($$) if they operate at part load.

    5) Keep the doors closed! (as much as possible).

    6) Try to use off-peak power when possible.

    7) Keep the non-condensables out of the system.

    8) Add more condenser capacity.

    9) Know what your electric utility is charging you for power and how they bill you.

    That is a short list of the important items.

    Best Regards,
    US Iceman
    Last edited by US Iceman; 22-05-2006 at 09:42 PM.

  3. #3
    Join Date
    Oct 2003
    Location
    Belgium
    Age
    62
    Posts
    5,645
    Rep Power
    34

    Re: Energy Management

    A short list...that's THE list which covers 95% of the savings you can make, especially point 1 - 3 and 2 (in order of importance for me)
    It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.

  4. #4
    Join Date
    Nov 2005
    Location
    USA
    Posts
    211
    Rep Power
    19

    Re: Energy Management

    Don't forget to clean the coils every once in a while and check the system for problems.
    "If Hannah was an air handler, I would be a condensing unit so I could open her TXV and pump my refrigerant through her coils." - a HVAC friend of mine

Similar Threads

  1. Helpful information
    By chemi-cool in forum Tools and Calculators
    Replies: 2
    Last Post: 30-10-2010, 07:00 PM
  2. Energy Conservation
    By US Iceman in forum Technical Speculations
    Replies: 20
    Last Post: 20-07-2010, 10:52 AM
  3. A question about energy efficiency rating in Europe
    By pcdata76 in forum Fundamentals
    Replies: 1
    Last Post: 22-05-2006, 10:17 AM
  4. Energy management contract issue
    By Lc_shi in forum Fundamentals
    Replies: 9
    Last Post: 30-03-2006, 03:01 PM
  5. Energy management
    By ecclesk in forum Industrial
    Replies: 13
    Last Post: 11-10-2005, 03:25 PM

Posting Permissions

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