2008 Energy STAR Windows Revisions - Technical Analysis

August 4, 2008

LBNL has provided technical support to the DOE 2008 effort to revise the Energy STAR windows requirements. Our work focused on two main areas:

Updating the modeling assumptions for RESFEN in order to generate space heating and cooling energy impacts from windows in typical new and existing houses throughout the United States:

• "RESFEN6 Modeling Assumptions for the 2008 Energy Star Window Analysis"
   
• DOE-2 results of Typical New and Existing One and Two Story Homes
   
• Regression Expressions for DOE2 results

Taking RESFEN results for individual houses and developing national energy savings estimates for proposed revisions:
 

• "A National Energy Savings Model of US Window Sales"
   
• Output Data from the LBNL National Energy Savings Model of US Window Sales
  (Note: This is a Microsoft Excel spreadsheet -- when Excel asks if you want to "Update links to other data sources" click on the "No" button -- otherwise, you will have to click through several error messages before the spreadsheet will open).
   
• County zone definitions used in generating maps for LBNL Presentations on August 13, 2008 (an Excel spreadsheet)

 LBNL Presentations at August 13, 2008 DOE Forum

• Technical Support for the 2008 Energy Star Windows Revisions
   
• National Window Energy Savings Model: Application to Energy Star Criteria Revisions
   
• Tradeoff Analysis for E* Criteria Revision
   
• Energy Star Program Savings Estimate

Contact:Christian Kohler, cjkohler@lbl.gov

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