ᐅ Cooling via underfloor heating with a ground-source heat pump
Created on: 30 Apr 2015 11:27
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SirSydom
Hello everyone,
I am very sensitive to heat, so this will be a major focus in our new build.
In addition to an automatic shading system with venetian blinds and roller shutters, and a solid construction method, as well as a ventilation system with a bypass (and possibly a ground heat exchanger), I am considering whether "passive" or "free" cooling through the underfloor heating system makes sense. This is said to have only low operating costs since only electricity for the pumps is required. The technology also seems quite simple—a heat exchanger between the brine circuit and the underfloor heating circuit, possibly with a few valves and a mixer.
Now I am wondering if the effort is worthwhile—does it really make a difference? Does anyone have a direct comparison in the same house, once with and once without?
My wife is still quite hesitant because she fears having cold feet. "In summer, I want to walk barefoot." Is this concern justified?
Are there alternatives for cooling that won’t immediately break the budget? A separate cooling ceiling would certainly cost several thousand euros.
With a conventional split air conditioning unit, I can already hear my wife complaining about drafts, so that option is probably off the table.
I am very sensitive to heat, so this will be a major focus in our new build.
In addition to an automatic shading system with venetian blinds and roller shutters, and a solid construction method, as well as a ventilation system with a bypass (and possibly a ground heat exchanger), I am considering whether "passive" or "free" cooling through the underfloor heating system makes sense. This is said to have only low operating costs since only electricity for the pumps is required. The technology also seems quite simple—a heat exchanger between the brine circuit and the underfloor heating circuit, possibly with a few valves and a mixer.
Now I am wondering if the effort is worthwhile—does it really make a difference? Does anyone have a direct comparison in the same house, once with and once without?
My wife is still quite hesitant because she fears having cold feet. "In summer, I want to walk barefoot." Is this concern justified?
Are there alternatives for cooling that won’t immediately break the budget? A separate cooling ceiling would certainly cost several thousand euros.
With a conventional split air conditioning unit, I can already hear my wife complaining about drafts, so that option is probably off the table.
S
Sebastian7930 Apr 2015 12:52I imagine it would be very uncomfortable—especially on tiled floors. Even more so for people sensitive to heat or cold.
Why not use a split system? You can set it so it doesn’t blow air directly at you, and it can run at such a low ventilation level that you barely notice it. Yesterday, I finalized the HVAC planning and am really looking forward to comfortable nights on the upper floor.
Why not use a split system? You can set it so it doesn’t blow air directly at you, and it can run at such a low ventilation level that you barely notice it. Yesterday, I finalized the HVAC planning and am really looking forward to comfortable nights on the upper floor.
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Sebastian7930 Apr 2015 13:32With a ground source heat pump, the additional cost is only about that much – Toxi was probably referring to other heating systems and the extra costs associated with them.
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toxicmolotof30 Apr 2015 15:16No. I was referring to heat pumps.
The difference for us would be mainly around 1600 euros plus taxes for the heat pump that can also provide passive cooling. Basically, the heat exchanger and pumps just keep running.
There are also other heat pumps that, with additional electricity, can actively cool by using compressor technology to transfer heat from the underfloor heating to the ground loop and thus into the ground.
The difference for us would be mainly around 1600 euros plus taxes for the heat pump that can also provide passive cooling. Basically, the heat exchanger and pumps just keep running.
There are also other heat pumps that, with additional electricity, can actively cool by using compressor technology to transfer heat from the underfloor heating to the ground loop and thus into the ground.
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toxicmolotof30 Apr 2015 15:32Probably exactly like that. The heat for the hot water is still being extracted from the ground loop. Maybe alternately until the tank is warm enough?
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