Solar thermal heating

General scientific debates. Presentations of new technologies (not directly related to renewable energies or biofuels or other themes developed in other sub-sectors) forums).
Ahmed
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Re: Solar thermal heating




by Ahmed » 31/10/23, 10:33

I think it is appropriate to observe a certain distance from the words of "grandpa Claude": an ITE and a solar thermal supplement are not comparable, because the ITE also makes it possible to achieve excellent thermal comfort in summer. ... From a logical point of view, reducing energy consumption comes before any other consideration.
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Re: Solar thermal heating




by Which » 31/10/23, 10:53

There is ideal logic and the wallet.
If I follow the current commercial doxa, it is ITE + PAC + water heating circuit. It makes a very nice envelope.
I am not in favor of reversible air conditioning and I am currently using electric radiators, the house is already a little insulated.

Whatever happens, I plan to install heated floors or heated walls.
I still have the ITE and the PAC, next to the thermal solar collectors.
In terms of budget, there is no picture.
It's all about compromise.
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sicetaitsimple
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Re: Solar thermal heating




by sicetaitsimple » 31/10/23, 11:18

izentrop wrote:
I'm surprised that Christophe hasn't intervened yet, he knows a lot about this area...

It's certain, but its installation is so specific...For "Which" who perhaps doesn't know, it's more than 20m2 of sensors and a "swimming pool" storage of 70m3
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Which
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Re: Solar thermal heating




by Which » 31/10/23, 11:43

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sicetaitsimple
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Re: Solar thermal heating




by sicetaitsimple » 31/10/23, 12:04

Ahmed wrote:From a logical point of view, reducing energy consumption comes before any other consideration.

I thought I replied, but I can't see my message.
I wanted to add that when it comes to heating, simplicity (and generally the reliability that goes with it) is also a criterion to take into account.
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Which
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Re: Solar thermal heating




by Which » 01/11/23, 08:45

In terms of "ideal", the simplest and most effective is the passive house.
This requires good solar orientation, lots of highly insulated glazing and very strong thermal insulation, double-flow VMC, and that's it, no need for heating.

The real estate stock being what it is, and the budget being what it is, we have to adapt well.
For example, nothing saddens me more than on beautiful sunny days, the exposure of my house does not allow me to take full advantage of direct solar input, or very little.
We should be hot and we are cold.
Solar thermal collectors would make it possible to correct the initial orientation error of the former owners and the manufacturer, because it was entirely possible to correctly orient the house on the ground.

There, I take a little time to digest the information and guide my choices.
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GuyGadeboisTheBack
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Re: Solar thermal heating




by GuyGadeboisTheBack » 01/11/23, 11:45

On sunny days, I fully heat the first floor with my veranda facing south. The temperature can quickly rise to more than 23° by opening the double glass doors leading above.
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Re: Solar thermal heating




by Which » 01/11/23, 12:16

Good idea but it's still something I could never do. Not interesting or even impossible to put a veranda where it would be thermally interesting. “This house is really well established!”
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Forhorse
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Re: Solar thermal heating




by Forhorse » 01/11/23, 17:16

Yeah and well, the Alpes de Hautes Provence is not the Creuse, the Jura or the Ardennes...
Winter temperatures and sunshine are not necessarily comparable.
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Re: Solar thermal heating




by GuyGadeboisTheBack » 01/11/23, 17:52

At home, the average temperature over the year is around 12,5° with temperature variations that are not disgusting. Example: mid-July it can be 35° during the day and 12° around 4 a.m. Record in winter: -12°.
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