Potential Operation and Maintenance (OM) Savings at the Dunbar Middle and Sims Elementary Schools

摘要

The O&M measures identified in these schools include turning off HVAC systems atnight, turning off lights at night and installing motion sensors in the auditorium,gymnasium, and activity center.Both Dunbar and Sims had lighting retrofits, which were funded by the LoanSTARprogram, completed in November, 1991. As part of the LoanSTAR program, the lightingelectricity use, whole-building electricity use and gas consumption have been measuredsince September 1991. The measured utility energy cost, measured savings due to thelighting retrofit and projected savings of O&M measures are summarized in the followingtable.The results show lighting retrofit savings of $12,663 and potential annual O&Msavings of $57,147 for these two schools, which accounts for 7% and 33%, respectively,of the total annual energy cost ($172,181) in 1992. Quite surprisingly, the O&M savingsare about 5 times the LoanSTAR lighting retrofit savings in these two schools. Obviously,O&M measures should be given a high priority. However, it is recommended that thebuilding operators carefully monitor comfort level and indoor air quality when the O&Mmeasures are implemented to be sure that conditions are not compromised.