7.4. ICESR 04-08-2014 - Laserfiche WebLink

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ELK RIVER ICE ARENA—ICE SYSTEM EVALUATION AND RECOMMENDATIONS The one disadvantage of a common system is that if a major problem occurs with the refrigeration system, both ice sheets �,, are down. However, most equipment and systems have %�� backups, minimizing the chance that a total system failure will occu r. ' A common ice system could be installed in phases as described below: I Phase 1 includes the replaced of the existing ice rink floor and Photo P-4: The City of Alexandria insta I I ed a new industrial grade common refrigeration refrigeration system in the Rink 2 since the existing refrigeration system(for 2 rinks)in 2009 as discussed in room is likely large enough for the common system. At that Option 7. The system currently operates time the refrigeration system would be designed and installed one ice rink but is designed to connect a second ice rink in the future. with the capacity and accommodations to connect to Rink 2 at some point in the future. The existing ice rink floor in Rink 2 would be replaced with a concrete rink floor of the same size. A new mechanical ventilation system and refrigerant leak detection system would be installed to meet code requirements. The R-22 refrigerant that is salvaged from Rink 2 can be used in the refrigeration system for Rink 1 alleviating some concerns for an R-22 shortage in the future. Phase 2 includes installing the final compressor(s), pump(s), piping and controls to serve Rink 1, replacing the existing ice rink floor with a concrete rink floor, and change over the snow melt system to use waste heat from the refrigeration system. The cost estimates presented in the following table for Option 8 are shown in two phases as described above and include the complete replacement of both ice systems including refrigeration systems and ice rink floors. The cost estimates do not include the following items: • Building a new refrigeration room for a common refrigeration system to serve both rinks. • Improvements to the Rink 2 refrigeration system to keep it operating. • Expanding the length of the ice rink floor in Rink 1 from 185'to 200'. This would require a building expansion. • Reducing the size of the ice rink floor in Rink 2 from Olympic to NHL size and expanding the bleachers. 22