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i��s�ville Skating Center and City Hall <br />Feasibility Study <br />September 23,2007 <br />ip��a� Skating Oval Energy �s�¢���o�°�p4ic�� (2006) <br />t? � � � � ' �� � �� � ��� � '� � � � � � � � � I <br />I <br />. � � .. � : �•� � . . . � ���••� <br />+f fY� <br />' �1 �i� <br />� <br />.. - •� •� • '�� . �� ������ <br />�� � _ _ � .� _.-��-��.• :. �� ��. �� j - <br />Jan Feb Mat Apr May J�n Ju� Aug Sep Ocl Nov 4ec <br />1 -�� E� ��4�� -��-G�9 �Ek4': h; <br />� Figure 7: Shows the annual energy consumption for fhe speed skating oval. The hulk of the <br />3 energ,Y consumption is e/ectrical �nergy used to operafe the refrigeration plant from November fo <br />�1 ��i?�iicJi�. <br />� Speed Skating C3+r�f Energy Cost (2006) . <br />�e� �va <br />� <br />� <br />- — :i <br />�_ <br />_ � . _ > __ <br />t7�009 : r� . �'� _ . <br />v '� — <br />' fk� --- `� — — -- — -- — —•-- — <br />� {� � <br />I � �� . N . _ N. . .. t'�.� <br />� <br />Ar f�4 +�•� �-• w•� �_n �a �•ii� 'r' �w' F4Y ir« <br />� �- -- • 7 L'-!et � �83 _ — <br />6 Figure 8: The energy cost of the oval averages approximately$18,000 perrnortth during the four <br />� months the ice is maintained, and drops to approximately $1,000 per month wifhout ���t� ice. <br />$ E/ectrical energy is used mainly to operafe the refrigeration plant. <br />� <br />�'�7 ,3,3. City k���� � P�bl�� �afofy B�i�i�� <br />'I .i <br />h� The City Hall / Public Safety Building consumes approximately 1,100,000 k��117 of <br />1.� electricity annually and 1,046,500 �kWh of natural gas. There is a significant amount of <br />�� natural gas used even in the summer months. This is the result of the variable air <br />h� volume distribution system that cools all of the air distributed throughout the building. Air <br />h� to zones that become to cool is reheated with the gas boiler and hydronic reheat coils at <br />1 �� each zone. <br />�� <br />Geo-Xergy Systems Page 9 0� 33 <br />