Ashrae Journal - October 2008 - (Page 46) Addendum Subject Comments In response to research performed by an owner of a significant number of buildings, provides appropriate provisions to better allow daylighting. Adds a Column B to chiller efficiency requirements. Column B increases part load efficiency requirements, but in some cases, decreases full load efficiency requirements. Also applies the use of the adjustment factor for centrifugal chillers selected at nonstandard conditions to more situations. Updates the COP at 17°F efficiency levels for commercial heat pumps and introduces a new part load energy efficiency descriptor for all commercial unitary products above 65,000 Btu/h of cooling capacity. Clarifies use of “standard” and “non-standard” packaged terminal air conditioners (PTACs). Requires centrifugal fan units over 1,100 U.S. gpm at the rating conditions to meet the energy efficiency requirements for axial fan units. Exceptions are available. Clarifications. Estimated Savings (* Denotes According to the Foreword) D Daylighting M Chiller Efficiency and Equation * “…457.6 GWh of energy per year…” S Heat Pump Part Load Change T PTAC U Centrifugal Cooling Tower Fan Energy Limitation Appendix G Updates W Table 2: Addenda awaiting final approval. (See Page 48 for a discussion of the 2007 Supplement.) refining proposals, and responding to public review comments addenda for public review, receiving comments, responding and developing consensus. The membership includes individu- to commenters, and reaching consensus. Standard 90.1 is als and groups representing building ownunder “continuous maintenance.” ers, builders, code officials, architects, This means that anyone may submit engineers, lighting designers, utilities, changes to be considered through the industry, as well as the public interest. continuous maintenance proposal proMembers serve on one of five subcomcess (details available at www.ashrae. mittees that deal with format and comorg/technology/page/812). This allows pliance, building envelope, mechanical the committee to continuously—rather systems, lighting systems, and building than periodically—develop addenda simulation. The SSPC meets four times for public review and publication in History per year, with each meeting lasting three response to continuous maintenance As a Society dedicated “to advance the arts and sciences of heating, ventilating, to four days. proposals from the public or from comair conditioning and refrigerating to serve Those interested in joining can read mittee members. humanity and promote a sustainable world,” about membership expectations of the Each proposal goes through a pubASHRAE published its first energy standard, Energy Conservation in New Building Design, chair on the 90.1 Web site: http://sspc901. lic review process, which requires the in 1975. The standard and title have changed ashraepcs.org/membership.html. There SSPC formally respond to comments. through the years. Updated versions of the are links for those who wish to be conOften, these comments result in a full standard published in 1989, 1999, 2001, sidered for membership. second public review of an addendum 2004, and most recently 2007, have been widely used. Building codes developed by or an independent substantive change the International Code Council® (ICC) and How is Standard 90.1 Updated? (ISC). In these cases, the changing the National Fire Protection Agency (NFPA) sections must be sent out for another As an ANSI standard, 90.1 follows directly reference this standard. review. a rigorous process prior to approval, Following approval by the SSPC, including one or more public reviews for each change. ASHRAE standards are updated by the cog- approval by other ASHRAE committees, including the Stannizant committee through an established process of issuing dards Committee and Board of Directors, is mandatory prior to 46 ASHRAE Journal ashrae.org October 2008 http://www.ashrae.org/technology/page/812 http://www.ashrae.org/technology/page/812 http://sspc901.ashraepcs.org/membership.html http://sspc901.ashraepcs.org/membership.html http://www.ashrae.org
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