[Bldg-sim] Benchmarking the billing data.

[Aulbach, John]

Kazim:
 
What type of HVAC system do you have?  If it is a VAV, it sounds like
your system is functioning fine (summer is when VAV matching wreaks
havoc).
 
Check your winter outside air, window type, operating hours (do you heat
at night ??).
 
John R. Aulbach, PE, CEM
Project Manager
Nexant, Inc.
701 West Kimberly Ave., Suite 245
Placentia, CA 92870-6342 USA
Phone: 714-524-4402
Fax: 714-524-4407
email: jaulbach at nexant.com
 

________________________________

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Kazim Mirza
Sent: Friday, October 17, 2008 3:56 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Benchmarking the billing data.


Hello All,
              I am modelling an 124,000sqft five storied building in
eQUEST 3.61. I am benchmarking the model's electricity, demand and gas
use using the actual billing usage. I am able to benchmark the
electricity and demand use  but not the gas usage. I am able to get
pretty good streamlining in summer but not in winter. In winter the
total therms is up by 154% of the normal billing usage.
 
Does eQUEST overestimates the gas usage.
 
Any clue, help or direction would be appreciated.
 
Thanks in advance,
Kazim Mirza
Energy Engineer
UDIAC
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