[Bldg-sim] Food for thought....

RobertWichert robert at wichert.org
Thu Jun 28 10:44:01 PDT 2012


EnergyPro can "normalize" the "predicted" results using historical 
weather data.  It seems to work.


Robert Wichert P.Eng. LEED AP BD&C
+1 916 966 9060
FAX +1 916 966 9068







===============================================

On 6/28/2012 9:43 AM, Arpan Bakshi wrote:
>
> I would contact Zheng O'Neill. She was commissioned to do a similar 
> study for the Dept. of Defense as part of her work at United 
> Technologies, which she presented at IBPSA New York.
>
> http://www.aeeny.org/presentations/Feb12_NYC_AEE_Building_Modeling_Calibration.pdf 
>
>
>
>
> _________________________________________
>
> *Arpan Bakshi *Sustainability Manager
> LEED AP BD+C, ESTIDAMA PQP
>
> *YR&G*
> sustainability consulting, education and analysis
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>
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>
>
>
> On Thu, Jun 28, 2012 at 11:49 AM, Jim Dirkes 
> <jim at buildingperformanceteam.com 
> <mailto:jim at buildingperformanceteam.com>> wrote:
>
>     Dear Forums,
>
>     I am busy preparing a short talk for the Fall ASHRAE Energy
>     Modeling Conference.  The topic is "An Approach for Calibrating
>     Existing Building Energy Models to their Utility Consumption".
>
>     As part of the preparation, I will address the issue of how much
>     difference might result in energy conservation measure savings
>     predictions if you use _actual_ weather data for the billing
>     period versus _TMY_ data.
>
>     To get a rough idea  how much variation there might be, I looked
>     at Degree Days for a span of years.  What a variation! (for the
>     city I'm studying at least)
>
>     I am not yet sure how that affects total energy consumption --
>     you'll have to attend my presentation in Atlanta to find out J.
>
>     In the meantime, I am starting to think that existing building
>     energy models should use _actual_ weather, not TMY data.  Have any
>     of you run similar comparisons for existing building models?
>
>
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