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DOE Updates National Reference Standard for Commercial Buildings to 90.1-2013
ATLANTA – Following preliminary analysis that ASHRAE/IES’s 2013 energy efficiency standard contains energy savings over the 2010 standard – 8.5 percent source energy savings and 7.6 site energy savings – the U.S. Department of Energy (DOE) has issued a ruling that establishes the 2013 standard as the commercial building reference standard for state building energy codes.
In an announcement in the Sept. 26, 2014 edition of “The Federal Register,” DOE attributes the greater energy savings to improvements in ANSI/ASHRAE/IES Standard 90.1-2013, Energy Standard for Buildings Except Low-Rise Residential Buildings, related to several areas, including better lighting, fans, commercial refrigeration, boilers.
The determination means that states are required to update their codes to meet or exceed the 2013 standard within two years. Currently, states must meet or exceed the 2010 standard, which serves as the commercial building reference standard for state building energy codes under the federal Energy Conservation and Production Act.
“ASHRAE is pleased with this ruling from the DOE, recognizing the energy savings measures in the standard,” ASHRAE President Tom Phoenix said. “Standard 90.1 was an original cornerstone in our efforts to improve building performance, and we continue to strive to increase its efficiency in the future.”
Among the eight addenda that are identified as having a major positive impact on energy efficiency, IES notes that three are attributed to lighting changes according to Rita Harrold, IES director of technology. These address control requirements for lighting alterations, additional controls for more spaces with a shortened time to lighting reduction or shutoff, and a decrease in lighting power density in most building types to reflect changes in revisions to illuminance recommendations in the IES Lighting Handbook, 10th edition.
The DOE noted that the 2013 standard contains 52 positive impacts on energy efficiency that were incorporated into the analysis. These impacts included changes made through the public review process in which users of the standard comment and offer guidance on proposed requirements. Specifically the major positive impacts include:
• Control requirements for lighting alternations
• New requirements for individual fans
• Reduction of energy usage for large boilers
• Reduction of fan energy usage
• New efficiency requirements for commercial refrigeration
• More controls in more spaces and reduction of time to reduction or shut off of those controls
• Reduction of lighting power density in most building types
ASHRAE, founded in 1894, is a global
society advancing human well-being through sustainable technology for
the built environment. The Society and its more than 50,000 members
worldwide focus on building systems, energy efficiency, indoor air
quality, refrigeration and sustainability. Through research, standards
writing, publishing, certification and continuing education, ASHRAE
shapes tomorrow’s built environment today. More information can be
found at www.ashrae.org/news.
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