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ELK RIVER ICE ARENA - ICE SYSTEM EVALUATION AND RECOMMENDATIONS <br />Recommendations <br />The main focus of this report is to evaluate the 31 -year old ice <br />system in Rink 1 and provide recommendations to assist the <br />City in its planning and budgeting for its replacement. Given <br />that: the rink floor was replaced fairly recently in 2004; the <br />system is a direct system; and that the options for refrigerants <br />and systems in the ice rink industry are changing with the <br />phase -out of R -22 refrigerant; there isn't a clear, single <br />replacement option. This section outlines not only the options <br />for replacement, but for improvements to the existing ice <br />system as well. It is also prudent to consider the eventual <br />replacement of the ice system in Rink 2 and how combining <br />systems could maximize energy savings. Cost estimates are <br />provided for each option in the table at this end of section. <br />The following options will be discussed in this section: <br />Option 1: <br />Do nothing. Continue to maintain existing systems. <br />Option 2: <br />Make improvements to the existing direct system. <br />Option 3: <br />Convert to an indirect, industrial grade, R -22 or <br />other HFC refrigerant based system using the <br />existing refrigeration equipment. <br />Option 4: <br />New indirect, industrial grade, HFC refrigerant <br />based system. <br />Option 5: <br />New indirect, industrial grade, ammonia based <br />system. <br />Option 6: <br />Same as option 6 but includes future connection to <br />Rink 2. <br />Option 7: <br />New carbon dioxide (CO2) based system. <br />Option 8: <br />Alternate energy source system. See Section 6. <br />U Stevens 13 <br />