Recent Articles

Geothermal: Exploring renewed frontiers

By Denise Deveau Most contractors will tell you that taking on a job midstream isn’t an ideal way to make a living. But the fact that a building was halfway through construction didn’t faze Walter Lehmann and his team at Frontier Refrigeration and Mechanical Services in Winnipeg. Lehmann was…

Catching up with the fastest woman on ice: Catriona Le May Doan

By Adam Freill Catriona Le May Doan is known for setting Canadian and Olympic records over a speed skating career that spanned four Olympic Games, but just because she has retired does not mean that her Olympic career is over yet, she’s just moved her playing field to the broadcast booth. Recently…

Refrigeration: CO2 cascade systems for sustainability

By Phil Boudreau HFC refrigerants and ammonia are currently the mostly widely used refrigerants in commercial and industrial applications. HFCs became the refrigerant of choice due to the ozone depleting properties of CFCs and HCFCs. In recent years, the global warming effect of HFCs has also been…

Heading up to the Attic

By Gord Cooke On a hot summer day, can you think of any worse place to be than in an attic? Well, as I crawled my way through the cramped, dusty, blazingly hot 100-year-old attic of my brother’s house last summer, a couple of thoughts came to mind that are perhaps of interest to mechanical…
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