Publications

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Document type: Analysis, Determination
Publication Date: October 2011
Focus: Code Development
A final qualitative analysis of all addenda to ASHRAE Standard 90.1-2007 that were included in ASHRAE Standard 90.1-2010 was conducted. All 109 addenda processed by ASHRAE in the creation of ASHRAE Standard 90.1-2010 from ASHRAE Standard 90.1-2007 were evaluated by the U.S. Department of Energy (DOE) for their impact on energy efficiency. DOE determined whether each addendum would have a positive, neutral, or negative impact on overall building efficiency.
Document type: Analysis, Determination
Publication Date: October 2011
Focus: Code Development
The U.S. Department of Energy (DOE) conducted a final quantitative analysis to assess whether buildings constructed according to the requirements of ASHRAE Standard 90.1-2010 would result in energy savings compared with buildings constructed to ASHRAE Standard 90.1- 2007. The final analysis considered each of the 109 addenda to ASHRAE Standard 90.1-2007 that were included in ASHRAE Standard 90.1- 2010. All 109 addenda processed by ASHRAE in the creation of ASHRAE Standard 90.1-2010 from ASHRAE Standard 90.1-2007 were reviewed by DOE, and their combined impact on a suite of 16 building prototype models in 15 ASHRAE climate zones was considered. Most addenda were deemed to have little quantifiable impact on building efficiency for the purpose of DOE’s final determination. However, out of the 109 addenda, 34 were preliminarily determined to have a measureable and quantifiable impact.
Document type: Analysis, Determination
Publication Date: May 2011
Focus: Code Development
The United States (U.S.) Department of Energy (DOE) conducted a final quantitative analysis to assess whether buildings constructed according to the requirements of the ASHRAE Standard 90.1-2007 would result in energy savings compared with buildings constructed to ASHRAE Standard 90.1-2004. The final analysis considered each of the 44 addenda to ASHRAE Standard 90.1-2004 that were included in ASHRAE Standard 90.1-2007. All 44 addenda processed by ASHRAE in the creation of Standard 90.1-2007 from ASHRAE Standard 90.1-2004 were reviewed by DOE, and their combined impact on a suite of 15 building prototype models in 15 ASHRAE climate zones was considered. Most addenda were deemed to have little quantifiable impact on building efficiency for the purpose of DOE’s final determination. However, out of the 44 addenda, 9 were preliminarily determined to have measureable and quantifiable impact.
Document type: Analysis, Determination
Publication Date: January 2011
Focus: Code Development
A final qualitative analysis of all addenda to ASHRAE Standard 90.1-2004 that were included in ASHRAE Standard 90.1-2007 was conducted. All 44 addenda processed by ASHRAE in the creation of ASHRAE Standard 90.1-2007 from ASHRAE Standard 90.1-2004 were evaluated by the U.S. Department of Energy (DOE) for their impact on energy efficiency. DOE preliminarily determined whether that addenda would have a positive, neutral, or negative impact on overall building efficiency.
Document type: Analysis, Determination
Publication Date: January 2006
Focus: Regulatory
This worksheet aggregates the results of building energy simulations used in support of the U.S. Department of Energy's determination regarding whether ASHRAE Standard 90.1-1999 will improve energy efficiency in commercial buildings. This determination is required by Section 304 of the Energy Conservation and Production Act.
Document type: Determination
Publication Date:
Focus: Code Development
The Energy Conservation and Production Act provides that whenever the ASHRAE Standard 90.1-1989, or any successor to that code is revised, the Secretary of Energy must determine whether the revised code would improve energy efficiency in commercial buildingsThe U.S. Department of Energy has performed both a quantitative analysis of the likely impacts of the revised code on the energy efficiency of seven categories of new commercial buildings, compared to the 1989 edition, and a non-quantitative assessment of the comparative stringency of those elements of the revised code that could not be analyzed quantitatively.The quantitative analysis concluded that the1999 revision of the code would likely reduce the source energy consumption of new commercial buildings by approximately 5.9 percent. Site energy savings were estimated to be approximately 3.9 percent. The comparative assessment of those elements of the 1989 and 1999 revised codes that could not be quantitatively analyzed also...
Document type: Determination, Technical Support Document
Publication Date: September 2009
Focus:
The Energy Conservation and Production Act of 1976, as amended, requires the U.S. Department of Energy (DOE) to determine whether revisions to the 2006 International Energy Conservation Code (IECC) would improve energy efficiency in residential buildings. An “affirmative determination” for any IECC revision triggers a requirement that each state certify to DOE, within 2 years of the publication of the determination, that it has reviewed the provisions of the new code and made a determination whether it is appropriate to update its building code(s) to meet or exceed the revised IECC.
Document type: Determination
Publication Date: July 2005
Focus: Code Development
The U.S. Department of Energy (DOE) determined that ASHRAE Standard 90.1-1999, would achieve greater energy efficiency in buildings, except low-rise residential buildings, than ASHRAE Standard 90.1-1989. As a result of this positive determination regarding ASHRAE Standard 90.1-1999, each state is required to certify that it has reviewed and updated the provisions of its commercial building code regarding energy efficiency to meet or exceed ASHRAE Standard 90.1-1999 for any “building” within the meaning of Section 303(2) of the Energy Conservation and Production Act of 1976, as amended. This Notice provides guidance to states on certifications, and requests for extensions of deadlines for certification statements.