Red Seal Trades › Steamfitter / Pipefitter (307A) › Renewable Energy Systems
Renewable Energy Systems makes up about 8% of the 307A Steamfitter / Pipefitter Red Seal exam. Below are 3 free practice questions from this block, each with the answer and a plain-English explanation of why it is right.
Practice all 8 Renewable Energy Systems questions →1.A geo-exchange (ground-source heat pump) system uses what as the heat source/sink?
Why: Geo-exchange systems circulate fluid through underground loops, exchanging heat with the earth (~10°C year-round in most of Canada). Heating in winter, cooling in summer, very efficient.
2.An open-loop geo-exchange system uses:
Why: Open-loop: well water pumped through the heat pump and discharged (return well or surface water). Higher efficiency but requires good water quality, sufficient flow, and discharge permits.
3.Antifreeze protection in a geo-exchange loop is typically provided by:
Why: Propylene glycol (non-toxic) or methanol are common. Ethylene glycol is toxic and not preferred for ground loops due to environmental concerns if a leak occurs. Concentration based on minimum expected temperature.
5 more Renewable Energy Systems questions inside
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