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

[Dahlstrom, Aaron]

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 Posse – A subsidiary of AKF| 1500 Walnut Street, Suite 1414, Philadelphia, PA 19102
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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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