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Roseville Skating Center and City Hall <br />Feasibility Study September 23, 2007 <br />Maintenance Garage Energy Consumption (2006) <br />I: �.' ,}�.' - - • . . <br />I ; •-: r�• - . . . . . . _ � <br />i <br />+�'��` -- - <br />� _. <br />i � r�+t- — . <br />�' . <br />� <br />�{rtv0. -- � ----. <br />'iA{�G � - . — ... . _. _ <br />� —4 � <br />-' — -�-• }.• � <br />Jan Feb AiS Apr May Jun J�I Aug $ep Oct I�}. � <br />� Elec (kWh) �4� Cas f�kWh} <br />Figure 11: Natural gas consumption is directly related to the weather, while lighting and electric <br />motor loads are fairly consistent throughout the year, with only a slight increase created by <br />cooling demands in the office and meeting room areas. <br />�- - - - - - -- ---- - - - -�� --- ---- - - - -- -- - -- --�- <br />3.5. Fire Hall <br />The total energy cost for the Fire Hall is approximately $11,400 per year (in 2006). Sixty <br />percent of the energy cost is for natural gas to provide space heating and service hot <br />water (SHW). The estimated efficiency of the gas rooftop units and infra red heaters in <br />the Fire Hall is 80%. <br />Gas consumption in 2006 was approximately 6,000 CCF, or the equivalent of 176,800 <br />k�1� ($0.0385 per EkW}�). Electricity consumption was approximately 71,400 k� in <br />2006, at a cost of $4,575 ($0.0641 per kWh} <br />Geo-Xergy Systems Page 11 of 3� <br />