[Bldg-sim] Effect of building size on energy use intensity

David Eldridge dse at grummanbutkus.com
Sun Apr 10 10:45:22 PDT 2011


There was a presentation at the SimBuild 2010 in NYC for an office building
that was otherwise the same, identifying changes in energy usage due to the
shape of the floor plan and quantity of window area.



http://www.ibpsa.us/pub/simbuild2010/technicalPresentations/SB10-PPT-TS02A-03-Baker.pdf



David



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David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP

*Grumman/Butkus Associates*

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*From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *Dahlstrom, Aaron
*Sent:* Friday, April 08, 2011 9:11 AM
*To:* Jin Minming; bldg-sim at lists.onebuilding.org
*Subject:* Re: [Bldg-sim] Effect of building size on energy use intensity



Jim:



Have you seen the Energy Star Technical Methodologies?



http://www.energystar.gov/index.cfm?c=evaluate_performance.bus_portfoliomanager_model_tech_desc



It shows the regressions they ran on the CBECS database to determine the
Energy Star predicted Source EUI.



This delves into similar issues – for example, in the Office Tech
Description, they discuss the correlation between the natural log of
Building Area and Source EUI.



*Aaron Dahlstrom , PE, LEED® AP*

*In P**o**sse* – A subsidiary of *AKF*| 1500 Walnut Street, Suite 1414,
Philadelphia, PA 19102

d: 215-282-6753| m: 267-507-5470| In Posse: 215-282-6800| AKF: 215-735-7290

e: ADahlstrom at in-posse.com | in posse web: www.in-posse.com | akf web:
www.akfgroup.com







*From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *Jin Minming
*Sent:* Thursday, April 07, 2011 4:22 PM
*To:* bldg-sim at lists.onebuilding.org
*Subject:* [Bldg-sim] Effect of building size on energy use intensity



Dear all,

Building size (or floor area)  should have some influences on energy use
intensity (Btu per sq ft). Roughly speaking, heating energy use intensity
may decrease if the building size increases due to less surface area exposed
to the outside. However, cooling and lighting energy intensity (usually
electricity) may increase for the same reason.  This sounds the case from a
report below except for small buildings (less than 5000 sq ft),
“A Look at Commercial Buildings in 1995: Characteristics, Energy
Consumption, and Energy Expenditures”

Anyone know there are some reports or research about detailed analysis about
influenences of floorspace on energy use intensity?

Thanks,

Jim
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