[Bldg-sim] Energy Model Cost - best designdoesn'tequalmost LEED points

Goldwasser, David David.Goldwasser at nrel.gov
Mon May 16 09:51:36 PDT 2011


One variation I was considering to EUI was to look at Kbtu per annual occupant hour vs. Kbtu per area. This came about when I wanted know how to evaluate some operational alternatives such as extending the hours of operation for a facility, or looking at an office running with a rotating staff all working 4x10 hour days a week vs. a smaller static staff in the same building working 5x8 hour days a week. Kbtu/sf2 alone didn't help here, but looking at Kbtu per annual occupant hour did.

Extending operational hours will clearly increase your Kbtu/ft2 (EUI) but the question I wanted to answer is if those extra occupant hours come at a lower energy impact per occupant hour than the baseline case. "Kbtu/ annual occupant hour" addressed this. Is there a similar metric that anyone else is using?

David

--
David Goldwasser, LEED AP
National Renewable Energy Laboratory




> -----Original Message-----
> From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-
> bounces at lists.onebuilding.org] On Behalf Of Marcus Sheffer
> Sent: Monday, May 16, 2011 10:16 AM
> To: 'Paul Riemer'; bldg-sim at lists.onebuilding.org
> Subject: Re: [Bldg-sim] Energy Model Cost - best designdoesn'tequalmost LEED
> points
> 
> Paul,
> 
> The next version of LEED will approach a more standardized metric (EUI Source
> Energy) but still include cost as a metric as well.  For those who feel
> strongly that only actual energy use should be used for green building
> certification the LEED EBOM methodologies will be allowed into LEED BD+C
> projects.
> 
> USGBC is trying hard to lead us to that better way.  If you know the better
> way please share.
> 
> Marcus Sheffer
> Energy Opportunities, Inc/a 7group Company
> 1200 E Camping Area Road, Wellsville, PA  17365
> 717-292-2636, sheffer at sevengroup.com
> www.sevengroup.com
> 



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