[Equest-users] Need help- Model not calibrating- Usage way above monthly history from bills

John Aulbach jra_sac at yahoo.com
Thu Jun 6 09:40:06 PDT 2013

Too many scattershot questions, no input file.Could you please send your .INP and .PD2 so the professors on this site can help you? And are you speaking of 40% for BOTH electric and propane? Did you input propane as a fuel or is it natural gas in the model (different Btu/unit value)? And is it 40% in each month? Can you share your Excel comparison (and for me, please submit in Mircorsoft 2003 foirmat)?
Hope we can help.
John R. Aulbach, PE

From: nirupama lakshminarasimhan <nirupamalnarasimhan at gmail.com>
To: equest-users at lists.onebuilding.org 
Sent: Thursday, June 6, 2013 6:10 AM
Subject: [Equest-users] Need help- Model not calibrating- Usage way above monthly history from bills

I have modeled a high school building (NH) on eQuest. It is participating in a state funded incentive program. I’ve been using the software for 2 years now, but cannot figure out why the electricity and fuel usage from the model are at least 40% above actual usage.
Mysteriously, I have significant electricity use from space heating, when I have no electric heat in the facility- does this number refer to auxiliary components in the heating systems? Because the corresponding fuel bills are also high.
I have condensing propane boilers with distribution through terminal units including unit heaters, cabinet heaters, unit ventilators, baseboards and roof-top air handlers. 
The “vent. Fans” and the “pumps & aux” categories also read high apart from the “miscellaneous equipment”- I could fix the miscellaneous loads. But as far as the other categories go, I do not know where to even begin troubleshooting.
This was the first model that I used the detailed interface from start and built it way back in November 2012. And since I am at a loss of technical language to describe this, I need help with reducing the electricity and fuel use in the building- especially with editing information related to schedules, meter assignments and/ or temperature set points to avoid the heating and cooling units working at the same time. 
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