Results 1 to 5 of 5

Hybrid View

  1. #1
    pjones6527's Avatar
    pjones6527 Guest

    Air Handling Unit(AHU) Efficiency

    We use an Air Handling Unit(AHU) to supply heating & cooling to our office. The current temperature/humidity setting of the unit is 22degrees/50%RH.

    I would like to increase the temperature to 27/28 degrees with reduction of chilled water usage in mind which would result in reduction of costs.

    What I am trying to find out is: If the Temperature is increased to 27/28 degrees, will the AHU be running efficiently trying to maintain the relative humidity at 50%RH or will power usage be increased for this setting. (For this example take the outside temperature to be at 25 degrees)

    Any advice on this would be much appreciated.

  2. #2
    Join Date
    Aug 2007
    Location
    Russia
    Posts
    138
    Rep Power
    21

    Re: Air Handling Unit(AHU) Efficiency

    What method of the humidification do you use?

  3. #3
    Join Date
    Feb 2007
    Location
    SIDE OF THE ROAD
    Posts
    263
    Rep Power
    18

    Re: Air Handling Unit(AHU) Efficiency

    hi,

    a good ddc engineer is what you need, check if you are controlling off the return air or local stat watch out for solar gain on the florrs!!! check if your entalpy control,mixing box etc.. are all in order...if you are increasing setpoint i would raise chilled water set point and look to decreasing fan when dehum required and dew point for 26/27 degrees

    rgrds phil

  4. #4
    Join Date
    Oct 2001
    Location
    Nottingham UK
    Posts
    5,733
    Rep Power
    51

    Re: Air Handling Unit(AHU) Efficiency

    With an outdoor temperature of 25 and an indoor target temperature of 27/28 you don't need chilled water cooling, you need heating!

  5. #5
    Join Date
    Feb 2007
    Location
    Bedford
    Posts
    38
    Rep Power
    0

    Re: Air Handling Unit(AHU) Efficiency

    Temperature and humidity are in relationship higher the temperature the lower the humidity.

    Freecool

Similar Threads

  1. Hi, ref handling and my options
    By jdunc2301 in forum Fundamentals
    Replies: 3
    Last Post: 12-04-2007, 12:32 AM
  2. Replies: 5
    Last Post: 24-07-2006, 03:28 PM
  3. gas turbine efficiency
    By Ahmed_LNG in forum Refrigerants
    Replies: 7
    Last Post: 23-04-2006, 12:50 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
  •