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Content DescriptionThe purpose of the standard is to establish a uniform set of requirements for rating computer and data processing room (CDPR) unitary air conditioners. This 2012 revision of the standard makes some significant changes to the 2007 edition: (1) The standard has been modified to cover four different product application classifications. This reflects the industry need to modify equipment to accept higher and higher return temperatures, thus increasing efficiency. (2) The chilled-water conditions have been adjusted on the chilled-water air handlers to emphasize the higher system efficiency when higher temperatures are used, even though the specific units involved will appear to be lower in capacity and efficiency. (3) The acronym "SCOP" was exchanged as this is currently used within 90.1 with a different meaning. (4) A term and testing/rating procedure for equipment covered by Standard 127 was established that is similar to the term iEER now being used in Standard 90.1. (5) A testing/rating procedure for the newer technologies now being deployed within computer rooms such as "row based cooling systems" and enclosed cabinet cooling was established.This book also exists in the following packages...Subscription InformationMADCAD.com ASHRAE subscriptions are annual and access is concurrency based (number of people that can access the subscription at any given time).
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About ASHRAEASHRAE, founded in 1894, is a building technology society with more than 50,000 members worldwide. The Society and its members focus on building systems, energy efficiency, indoor air quality and sustainability within the industry. Through research, standards writing, publishing and continuing education, ASHRAE shapes tomorrow’s built environment today.
ASHRAE was formed as the American Society of Heating, Refrigerating and Air-Conditioning Engineers by the merger in 1959 of American Society of Heating and Air-Conditioning Engineers (ASHAE) founded in 1894 and The American Society of Refrigerating Engineers (ASRE) founded in 1904.
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