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Numerous energy savings measures resulting from industry input are contained in the newly published energy efficiency standard from ASHRAE and IES.
ANSI/ASHRAE/IES Standard 90.1-2016, Energy Efficiency Standard for Buildings Except Low-Rise Residential Buildings, contains 125 addenda published since the 2013 standard. The 2013 standard currently serves as the commercial building reference standard for state building energy codes.
This 2016 version is the 10th edition published since the original standard was first published in 1975 during the energy crisis of the United States.
"It is the overall goal of each version to create a consensus standard that saves energy and is technically feasible and cost effective,” Drake Erbe, chair of the Standard 90.1 committee, said. “In addition, as a result of a strategic initiative begun in the 2013 cycle, the 2016 version has a new format that we believe will be easier for users, a new way of incorporation of reference material from other standards starting with climate data, and a performance path for compliance that rewards designs for achieving energy cost levels above the standard minimum.”
The standard has made significant formatting changes to improve its use. These include a one-column format for easier reading; exceptions separated and indented, set apart with a smaller font size; all defined terms are italicized; and alternating coloring scheme for table rows.
The most significant technical changes included are as follows:
Energy Cost Budget (ECB) and Modeling. A significant change to the application of Appendix G as follows:
Appendix G now can be used as a path for compliance with the standard. Previously Appendix G was used only to rate “beyond code” performance of buildings. This new version of Appendix G can show compliance with the 2016 version of the standard in the following manner:
Other modifications to Appendix G include: elevator, motor, and refrigeration baselines; changes to the baseline for existing building projects; as well as specific opaque assemblies for the baseline envelope model. Modeling rule changes were also made to heat pump auxiliary heat, economizer shutoff, lighting controls, humidification systems, cooling towers, and the simulation of preheat coils.
Additional structural changes include:
The cost of is $119, ASHRAE members ($140, non-members). To order, visit www.ashrae.org/bookstore or contact ASHRAE Customer Contact Center at 1-800-527-4723 (United States and Canada) or 404-636-8400 (worldwide) or fax 678-539-2129.
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