Heat gain from uninterruptible power supplies

Warren N. White, Emilio C. Piesciorovsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In order to size the HVAC equipment for facilities using uninterruptible power supplies (UPS), an accurate estimate of the heat load produced by these devices is required. A model for the power dissipation of UPS is presented. The basis ofthe power loss model is the UPS efficiency. Different UPS configurations are classified and a corresponding efficiency, which is a function of load, is presented. A total of five different configurations are illustrated and a total of four different efficiency models are provided. The data used in the models are obtained from a publically sponsored study. The models are compared with UPS efficiency information obtained from manufacturer Web sites and the agreement between the efficiency models and the manufacturer data is shown to be reasonable. The power loss models were part of the work scope for RP-1395.

Original languageEnglish
Title of host publicationASHRAE Transactions - Papers Presented at the 2011 Annual Conference in Montreal, Quebec, Canada of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
Pages627-638
Number of pages12
EditionPART 2
StatePublished - 2011
Externally publishedYes
Event2011 ASHRAE Annual Conference - Montreal, QC, Canada
Duration: Jun 25 2011Jun 29 2011

Publication series

NameASHRAE Transactions
NumberPART 2
Volume117
ISSN (Print)0001-2505

Conference

Conference2011 ASHRAE Annual Conference
Country/TerritoryCanada
CityMontreal, QC
Period06/25/1106/29/11

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