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

[John Aulbach]

Nirupama:
 
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. 
 
Nirupama
 
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