[BLDG-SIM] Internal Loads for Office Buildings

[Brian Fountain]

I recall a study by the British Columbia Energy Management Task Force that
monitored the current draw on outlet circuits in a couple of buildings in
the mid-1990's.  As suggested below, it found plug loads to be in the order
of 0.75 to 0.85W/ft² during the day.  The interesting part was the
unoccupied plug loads of around 0.35W/ft².


  -----Original Message-----
  From: postman at gard.com [mailto:postman at gard.com]On Behalf Of Tom Anderson
  Sent: Wednesday, December 05, 2001 5:47 AM
  To: BLDG-SIM at gard.com
  Cc: BLDG-SIM at gard.com
  Subject: [BLDG-SIM] Internal Loads for Office Buildings


  If by high tech buildings you are referring to a modern office buildings,
then loads from desktop PC's, monitors, printers, copiers, etc. typically
will be about .5 watts per square foot, but may range from .5 to 1.0 watts
per foot.  Note the actual power use by such equipment is well below the
nameplate power data.
  Refer to published ASHRAE papers, starting in 1994, authored by Chris
Wilkins, who reported on extensive monitoring of such loads in real world
office buildings.

  Lighting loads, refer to 90.1-1999 for maximum power densities permissible
for office occupancies.  But lighting designers who apply efficient fixtures
for interior lighting design can easily achieve excellent illumination
levels using well below 1.0 watts per foot.

    Thomas E. Anderson
    President
    Cx Associates, Ltd.
    Building Commissioning Specialists
    http://www.cx-assoc.com
    933 Road 101
    Jeffersonville, Vermont 05464 USA
    hvac at cx-assoc.com
    Tel: 802-644-5616 Fax: 802-644-6797
  Samuel Hassid wrote:

      what is the accepted value for internal loads in a high tech building
?
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