It’s getting harder to make ice in Winnipeg, a city known for its frigid winters.
Warmer summers and sudden shifts in temperature in the spring and fall have made it difficult for the older refrigeration systems in Winnipeg’s municipal arenas to get the cement slab sufficiently cold. Todd McDonald, the supervisor of arena and aquatic assets for the City of Winnipeg, explained how one of the older Freon-based cooling systems he oversees is struggling to keep up with Manitoba’s changing climate.
Ammonia-based coolants are the most common in North American arenas. Although ammonia is highly toxic in confined spaces it has zero carbon emissions. Freon-based systems are being phased out as that chemical has a 100-year global warming potential of 1,810 or nearly 2,000 times more potent than carbon dioxide. Carbon dioxide refrigeration systems are also in use in some arenas, but they are not as widespread as either ammonia- or Freon-based systems.
“As the ground warms up more and more each year, it takes more and more energy to release that heat come the fall time,” he said. “As the shoulder seasons become more unpredictable that’s where we’re finding we’re struggling. Steve Glass, manager of facility operations for the City of Calgary, said that the trope of an old, dingy refrigerator plant at a local arena is simply not a reality anymore.Article content
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Here’s how Canadian arenas are adapting and improving to combat temperature change - National | Globalnews.caSome cities are finding new ways to make rinks more energy and cost efficient as older cooling systems in arenas are struggling to keep up with the changing climate.
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