TY - GEN
T1 - Heat gain from uninterruptible power supplies
AU - White, Warren N.
AU - Piesciorovsky, Emilio C.
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84856665572&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84856665572
SN - 9781936504121
T3 - ASHRAE Transactions
SP - 627
EP - 638
BT - ASHRAE Transactions - Papers Presented at the 2011 Annual Conference in Montreal, Quebec, Canada of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
T2 - 2011 ASHRAE Annual Conference
Y2 - 25 June 2011 through 29 June 2011
ER -