High Performing Buildings - Winter 2009 - (Page 12)

The Center for Health & Healing demonstrates in bricks and mortar that a healthy built environment is integral to healthy living. P e r f o r m a n c e D ata (7/2007 to 7/2008) total energy Use 17,096 Btu/ft2 electricity 5,770 Btu/ft2 natural Gas 11,326 Btu/ft2 energy cost Savings 61% more efficient than oregon code; 58% more than standard 90.1-1999; and approximately 50% more than standard 90.1-2004 ePa’s Portfolio manager energy Performance rating 78 Percent on-Site renewable energy Generation 2% (0.7% BiPV, 1.3% solar thermal) Percent Grid-Supplied renewable energy 50% gained by downsizing HVAC equipment. The reduction of mechanical penthouse space by using fan wall technology recaptured 10,000 square feet for programmatic use. 12 HigH Designing a high performance building began with assessing the natural resources available on the site. Temperature, rainfall, groundwater and wind flow data were Winter 2009 analyzed and a computational fluid dynamics (CFD) model of site wind flow were used to identify climatic loads and sources of “free” energy. Next, an estimate of the baseline energy use helped identify where the greatest savings could be found. Heating, hot water, and lighting uses offered the most significant savings. Daylighting models and the energy model informed the placement of sunshades and stair tower ventilation that helped reduce cooling loads and downsize the mechanical system by 30 tons. These cost savings helped pay for the expense of adding PV panels to the sun shades. Discussions Performing Buildings Photo © Jamie forsythe

Table of Contents for the Digital Edition of High Performing Buildings - Winter 2009

High Performing Buildings - Winter 2009
Contents
Commentary
OHSU Center for Health & Healing
Documenting Performance
Cook+Fox Architects Office
5 Houston Center
Skanska's Atlanta Office
Advertisers Index

High Performing Buildings - Winter 2009