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Energy Analysis, Baselining and Modeling of Prairie View A&M University
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Analysis of the available data found that electricity savings in the J.B. Coleman Library for June - September, 1998 were 298 MWh, or 38% of the baseline consumption during these months. Extrapolation of these savings to a full year leads would result in savings of 894 MWh/year. This would result in annual electricity cost savings of $42,500 at the average cost of $0.0475/kWh which was paid by the University for the period October, 1997 - September, 1998. Smaller savings were expected in chilled water, but were not evident in the data available. Likewise, no significant increase in hot water use was observed during the June - September period analyzed.
DescriptionThe thermal metering installations in 29 buildings were inspected. They were generally found to be in good condition, with a flow meter and the two required temperature sensors installed in the hot water and chilled water lines. However, in 14 of the installations, it was observed that either the hot water flow meter or the chilled water flow meter was located so close to a bend, valve, or other obstruction in the line that substantial errors in the flow (and Btu) readings are likely. In five of the buildings, both the hot water and chilled water flow meters were located too close to obstructions. Only 10 buildings had both flow meters placed properly. Temperature sensors were generally placed properly, although it was not possible to locate five (of 58) sensors to verify proper placement, and two others were located in the air handler piping rather than in the main building chilled and hot water lines.
Abushakra, B.; Haberl, J. S.; Claridge, D. E.; Eggebrecht, J.; Carlson, K. A. (1998). Energy Analysis, Baselining and Modeling of Prairie View A&M University. Energy Systems Laboratory (http://esl.tamu.edu), Texas A&M University. Available electronically from