Track: Systems and Equipment
Sponsor: 10.2 Automatic Icemaking Plants and Skating Rinks
Chair: Greg Scrivener, Member, Cold Dynamics, Meadow Lake, SK, Canada

There are many challenges facing the ice rink refrigeration industry including rising energy costs, phase out of refrigerants and stricter operator requirements. This seminar addresses each of these issues and provides a clear path to the future design of refrigeration systems that are sustainable, safe and minimize operator requirements.

1. Ammonia/Carbon Dioxide Secondary Systems
Arthur Sutherland, Member, Accent Refrigeration Systems, Victoria, BC, Canada
Over 20 recreational ice facilities in Europe and Asia have adopted indirect refrigeration systems utilizing ammonia as the primary refrigerant and Carbon Dioxide (CO2) as the secondary coolant. Ammonia, well known for its high efficiency, when combined with CO2 as a secondary coolant creates a Hybrid system that enjoys tremendous efficiencies on both sides of the indirect system. Learn why the University of Alaska's, Wells Fargo Arena was the ideal candidate for an energy saving Ammonia / CO2 system and how they reclaimed to 100% of their available low grade heat during the process.

2. Ice Arena Refrigeration Energy Comparison of Low-GWP and Natural Refrigerants
Kyle Larson, P.E., Associate Member, Vacom Technologies, LaVene, CA
Regulations are driving changes in refrigerants and forcing engineers and owners to think about what is best option for their ice arena. The refrigeration system design usually narrows down the type of refrigerant to a handful, but there still remains plenty of options to choose from including low-GWP and natural refrigerants. This seminar explores the energy impacts of different refrigerant options for a typical size ice arena. Building energy modeling will be performed to evaluate the utility costs. The simulation model includes the refrigeration system, the ice surface, space conditioning, envelope and other heat loads for the rink area.

3. Heat Recovery in Curling Facilities: Keep It Simple
Daniel Dettmers, P.E., Member, University of Wisconsin, Madison, WI
This seminar explores typical refrigeration systems used in dedicated curling facilities, how they can easily be designed or modified to provide economic heat recovery and present a case study on a heat recovery retrofit application and the savings it derived. The seminar explains that in this case, the simpler solutions are often the best to implement.

4. Heat Pumps in Ice Arena Refrigeration Systems
Wayne Borrowman, P.Eng., Member, Cimco Refrigeration, Toronto, ON, Canada
Traditionally, waste heat from the refrigeration system was recovered only if it was convenient to do so. In the modern Ice Arena refrigeration systems, waste heat is recovered in a variety of manners. Heat pumps and their variations are one solution. This presentation explores the various heat pump configurations available including utilizing the refrigeration plant itself as a large heat pump, coupling a second stage of compression to the existing refrigeration plant to make a hybrid heat pump, using stand-alone water to water heat pumps, as well as utilizing terminal heat pumps that can provide both heating and summer cooling.

Presented: Sunday, January 21, 2018, 3:15-4:45 PM
Run Time: 90 min.

This is a zip file that consists of PowerPoint slides synchronized with the audio-recording of the speaker (recorded presentation), PDF files of the slides, and audio only (mp3) for each presentation.