DOE Validates ANSI, ASHRAE, IESNA 90.1-2004 Energy Efficiency Standard
January 22, 2009 // Published as a news service by IHS
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In a Federal Register notice dated Dec. 30, 2008, the U.S. Department of Energy (DOE) determined that the provisions of American National Standards Institute (ANSI)/American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)/Illuminating Engineering Society of North America (IESNA) 90.1-2004 - Energy Standard for Buildings Except Low-Rise Residential Buildings would achieve greater energy efficiency in buildings subject to the code than the 1999 edition of the standard.
According to the DOE, the quantitative analysis of the energy consumption of buildings built to standard 90.1-2004, as compared with buildings built to standard 90.1-1999, indicates national source energy savings of approximately 13.9% of commercial building energy consumption. Site energy savings are estimated to be approximately 11.9%.
As laid out in Title III of the Energy Conservation and Production Act, whenever ANSI/ASHRAE/IESNA Standard 90.1-1989 or any successor to that code is revised, the DOE secretary must determine whether the revised code would improve energy efficiency in commercial buildings.
Now that the secretary issued the determination, each state has up to two years to review the provisions of its commercial building code regarding energy efficiency and certify that its code meets or exceeds ANSI/ASHRAE/IESNA 90.1-2004.
In arriving at a determination, the department first reviewed all significant changes between the 1999 edition and the 2004 edition of Standard 90.1, including those changes made between the 1999 edition and the 2001 edition (ANSI/ASHRAE/IESNA Standard 90.1-2001).
According to the DOE analysis, the 2004 edition achieves greater energy savings in 13 distinct areas, including additional insulation requirements for buried ductwork, lower retail sales lighting power allowance, new requirements for exit sign wattage and others.
ANSI/ASHRAE/IESNA 90.1-2004 provides minimum energy-efficient requirements for the design and construction of new buildings and their systems, new portions of buildings and their systems and new systems and equipment in existing buildings.
The document also details criteria for determining compliance with these requirements.
For more information, review the Dec. 30, 2008 Federal Register posting.
Source: American National Standards Institute (ANSI).