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Rosevilie Skating Center and �i:� I-i�lf <br />Feasibility Study September 23,2007 <br />continuously. The electrical energy used to extract the energy from the ice surface is <br />added to the thermal energy taken from the ice. An estimated 1,580,000 to 1,896,000 <br />3 k',�Jf7 of thermal energy is rejectecf to the air. An es�ii��atet� 632,000 :��r"�i1 of electrical <br />�4 energy is used to power the refrigeration compressors, pumps and fans to transfer this <br />� thermal energy from the ice to the air. <br />6 <br />r The amount of energy dissipated by the cooiing tower in the Ice Arena is significantly <br />�S greater fhan the amount of energy needed to provide space heating and service hot <br />9 water in the facility. Through out most of the year an excess of energy is available. In <br />1 p order to take greater advantage of the excess of thermal energy, two options are <br />1 � available: <br />1? 4 One option is to use the excess thermal energy to provide space or water heating <br />�I �S in the other nearby buildings, or use the energy for some other purpose. In some <br />�� facilities it has proven advantageous to use the excess thermal energy to melt <br />�� snow on the sidewalks, loading docks or for other uses. <br />�� A second option is to provide a method of storing the thermal energy when there <br />7� is excess in a manner that provides the capability to withdraw the energy when it <br />�I � is required. <br />19 <br />� [� <br />2� <br />�� <br />�� <br />�� <br />�� <br />�� <br />�� <br />�8 <br />?� <br />3l� <br />31 <br />�� <br />3� <br />Because the other buiidings on the City Hail Campus are very near the lce Arena and <br />require large amounts of thermal energy to provide space heating, and the buildings are <br />ail operated by a single owner (the City of Rosevilie) it should be relatively simple to <br />interconnect or integrate the mechanical systems with that of the [ce Arena. <br />�.3_ Inta�rati�� �4�i�f �it�} H�II ��mp�s �uil��n�� <br />Because of the proximity of all of various campus buildings, there are opportunities to <br />transfer energy from one building to another. For example, the City Hail 1 Public Safety <br />Building currently consumes more energy than the other campus buiidings. This building <br />also has the largest cooling load of any of the buildings (other than the refrigeration ioad <br />for making ice). Figure 18 shows the total energy balance of the !ce Arena / Banquet <br />Ha[i and the City Hail / Public Safety Building. <br />� A system with both buiidings are integrated into a common energy transfer system <br />�w becomes more evenly balanced, especially when one of the buiidings is cooiing <br />� dominant and the other is heating dominant. Thermal energy that is normally "wasted" <br />3� through the cooling tower can now be transferred to the other building. <br />:� � <br />Geo-�ewgy Systems Page 17 of 3� <br />