Hi everyone and thank you for letting me join. I have an acreage near Huntsville Ontario, climate zone 6, where I’ll be putting a 5000sf energy efficient house. It will be grid tied with +7kw solar. House heating plan is hydronic in poured floors.
My question goes to heat source and a water source. I prefer that over borehole and trenching for a couple of reasons and it has an important feature. A pond looks good. My research tells me there’s a problem that may seriously affect my plan. I did some preliminary sketches and a 200’x120’ pond is doable with a 22.5 degree slope down to 16’ depth, 1.3 million gal/US. I learned that before it freezes over the water column must be 4deg C/37.9F. Freeze over is likely by January and there’s 3 months of serious winter to come.
I understand the closed loop can be made good to 15 deg F, but is there a coil and refrigerant that can efficiently operate at 37.5F?
My question goes to heat source and a water source. I prefer that over borehole and trenching for a couple of reasons and it has an important feature. A pond looks good. My research tells me there’s a problem that may seriously affect my plan. I did some preliminary sketches and a 200’x120’ pond is doable with a 22.5 degree slope down to 16’ depth, 1.3 million gal/US. I learned that before it freezes over the water column must be 4deg C/37.9F. Freeze over is likely by January and there’s 3 months of serious winter to come.
I understand the closed loop can be made good to 15 deg F, but is there a coil and refrigerant that can efficiently operate at 37.5F?
source https://hvac-talk.com/vbb/showthread.php?2226584-Low-temperature-heat-extraction&goto=newpost
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