Passive energy bioclimatic house construction project

[michel-vautier]

Hello,

For my first intervention a multiple question and open to advice, remarks, recommendations.

I am currently studying the construction of a bioclimatic house with passive energy in Quebec (project for 1 or 2 years).

My choice of shape is oriented to an octagon with a large verandah complemented by solar panels and a complementary source of heat by focus of mass.

Wood frame (very well mastered in North America since 90% of houses are of this style), choice of uncertain walls
Straw?
Piece of wood on piece with insulation?
Wood panel + insulation?
Roof made of asphalt shingle
Foundation with concrete cage isolated from the outside.

I am looking for several elements to calculate the best energy / cost / return ratios.

For heat accumulation it is possible to play on the insulated concrete slab, but how to calculate the maximum heat accumulated in a refractory concrete? the accumulation time according to a hot source? the optimum thickness of the concrete between the source and the outermost surface? the type materials, melted cement, refractory elements, pouzolane, vermiculite, etc .....?

For insulation of walls and roofs, how is the insulation coefficient calculated according to the addition of different materials, etc.

at the level of solar energy, how to calculate the energy recovered as much at the level of the window as the sensors according to the angle of the sun and the seasons.

For the Canadian well how to calculate it?

Or find house plans of this style?

etc etc

I know that 80% of answers are in this forumbut the search is obviously obvious to a neophyte here.

I specify that I am not a néophypte under construction my first house was realized in siporex here is 20 years, my son is mason, my son-in-law carpenter.

On the other hand, I am committed to the furs and to share with everyone of my experience on this subject.

Thanks to All

[Woodcutter]

[...]
Wood frame (very well mastered in North America since 90% of houses are of this style), choice of uncertain walls
Straw?
Piece of wood on piece with insulation?
Wood panel + insulation?
Roof made of asphalt shingle
Foundation with concrete cage isolated from the outside.

I am looking for several elements to calculate the best energy / cost / return ratios.

For heat accumulation it is possible to play on the insulated concrete slab, but how to calculate the maximum heat accumulated in a refractory concrete? the accumulation time according to a hot source? the optimum thickness of the concrete between the source and the outermost surface? the type materials, melted cement, refractory elements, pouzolane, vermiculite, etc .....?

For insulation of walls and roofs, how is the insulation coefficient calculated according to the addition of different materials, etc.

at the level of solar energy, how to calculate the energy recovered as much at the level of the window as the sensors according to the angle of the sun and the seasons.

For the Canadian well how to calculate it?
[...]

For the frame, I advise you to stay in what is mastered in North America: wood frame as you said.
The insulation is very easy to make cellulose wadding and is the type of constructions that have the best cost / performance / thickness of the walls.

For inertia, you have to bring back in your house, inside the insulating layer, mineral matter. It basically means making a slab over an isolated wood joist in the joists.

I will not give you a thickness or other, but a reference that we use to calculate the inertia to bring to our MOB: we put about 1 T mass of inertia for 10 m² of living space.

For materials, I prefer to focus on those with the lowest environmental footprint, lime instead of cement. Afterwards, the mineral component will be either sand or pozzolan if you want to lighten the slab.

For walls and roof, you must add the thermal resistance values ​​of all materials that are not separated by a moving air layer or in contact with the outside.
The sum will give you the total resistance of the considered wall.
Of course, if you want to be precise, we must integrate the thermal bridges related to the structure in the case of a wood frame and there it becomes a bit more complex.

For solar energy, there is little computing software for that, but I'm not a specialist. I hope that forumI will give you more info than me.

For the Canadian well, I have never seen a "scientific method" of calculation, but empiricism works quite well!
Basically, you need pipes of about 250 mm in diameter, buried between 1.5 m and 2 m below the ground surface and a minimum length of 50 m ...

There it is, hopping I helped you.

[michel-vautier]

thank you it's a good start

A complementary question at the level of heat exchange:

which material to use?
it must be impenetrable PVC or materials of the same type is not bad, but not good conductor of heat.
Metals are oxidizable and much more expensive, unless alu but which is fragile ... on the other hand advantage of being able to easily put fins that increase its conductivity by effect radiator and can decrease the necessary length of pipe.

I add a comment.
I spent part of the night "looting" or "digging" for ideas, information, stuff from the forum and download.

And I was very interested by the stirling and pantone engine, it is crazy to discover what the human genius could create and what the human stupidity can discard !!

Having lived in Quebec during the ice storm crisis, no electricity by -20C so no heating and no generators on sale in any store (well happy it lasted only 1 week for my little family others have 3 had weeks ....) I am sensitive to the self generation of its own energy.

Although it is cold in Quebec in winters (-10C to -40C) sun radiation is incredibly interesting for the production of hot water per panel and why not consider a rotary boiler ...
what is the nominal heat to supply to a sterling motor?

please