forums energies: society, ecology and clean technologies

1st RENOVATED house
producing more energy than it consumes!

By Léonard Bender, architect EPF-SIA (Swiss Society of Engineers & Architects)
http://www.atlb.ch/accueil/accueil.html

For the first time, a renovated house is transformed with an energy efficiency equivalent to that of a new construction!

And this for a renovation cost of only 10% higher than a conventional renovation! (Probably thanks to government aid)

Exit the need to dig / drill to bury a storage tank!
Exit the problem of storing energy underground (whether at low or medium depth)!

We hardly heat any more, because we don't lose any more energy outside: no bar!

Avant


The house is in Valais, so cold and not very sunny (steep valleys and at the bottom of the valley!). ...>

After



Avant



After



Complete disappearance of door and window frames, fully integrated into the facade insulation (which leaves no chance for indoor / outdoor air circulation and which minimizes the loss of light due to this invasive insulation).

During the works (Under the snow!)



Front roofing



Roofing after (Integrated insulation)


Judicious use of welded metal frames, for under-roof insulation, and which notwithstanding its lightness and small size, allows long spans without too much encroaching on the space of the living rooms!

Insulation details (Roof walls)



Always in welded metal!

After



Detail of the ventilation ducts of the double-flow VMC, installed and intended to disappear in the structure itself.

Interior doors



Access doors to corridors and stairs, also hermetic with multi-point locks to ensure a perfect seal!

Super-insulated "cold room partition" type windows



Window without jamb but with mastoc appearance, which foreshadows very high insulation coef, from their design, up to the armpits provided for their installation!

Window / door (exterior view, the doorframe has completely disappeared)



Before after



Ground plan! We see that with the facade insulation, the walls have taken the thorax!

The roof is covered with solar panels! The house has a very small pellet boiler. However, the amount of energy sold to the network exceeds the purchase cover for pellets over the year. It's November, and they still haven't heated! I sincerely think that with hybrid panels (solar thermal + photovoltaic), although more expensive, should allow to do without any heating, if there is room for a thermal flask with fluid. This is all the more so as there is NO sign on the facade elements: there is therefore a way to do more: especially in winter, when the duration of sunshine is short.

What is remarkable and unprecedented to date is that we are dealing here with a renovation - it must be repeated - it is a first.

The architect said that the higher amount of work pays for itself, since there is no longer any fuel cost. Furthermore, he describes that this type of construction quickly increases in value since the cost of labor increases and automatically follows the course of the standard of living / purchasing power. So a renovation paid at today's price, will cost much more in ten, twenty or fifty years, and this type of house will take on even more value!

Nice work !

Even seen this evening on the news:

http://www.rts.ch/video/info/couleurs-l ... aires.html

The most interesting thing of all is that if we want to do it now: we can! Since we know that it is technically feasible!

And above all, it is the end of the paradigm of expensive drilling to bury a no less expensive thermal storage tank ...!

There is also the expensive and unreliable PAC (heat pump).

Huge!

Tomorrow there is an open day, I really want to go take a look

slut,

after viewing the report, I have only one thing to say, passive houses should be mandatory, and positive energy houses the future classic.

Now what you have to keep in mind is that all of history, in France at least, is played out at the level of received ideas and very old messages that die.

The habit is preferred to have the surface less well insulated therefore harder to heat therefore more consuming, than a more suitable surface but much better dressed with or better comfort and less expense.

to this if have added the vendors of material that blablatte to make money and well have arrived at the current state of things, and it is hard to make people understand that in doing everything that has been said and done so far was not in the interest of the consumer but beautiful and indeed in that of the merchant.

Now the air of communication is a game-changer and that's fine, even if there is still work to be done;).

Otherwise for the windows With jamb;) but very small with no true return on the shutters (a priori this is what I thought I understood) allows to have the largest possible glazing, which is actually very good for renovating (because in pure construction just position the windows well so as not to have to go through this technical solution, unless it costs the same price of course;)).

rain

Very nice achievement that makes you want.

It must nevertheless be recognized that this kind of work is only possible on a house without joint ownership and without a facade on the street.

And incidentally that the house is not habitable for the duration of the work (how long for the complete renovation?).

It would be nice to have some figures all the same:

- heater ? Nature ? How many kWh / m² ??? In connection with insulation ...

- energy production: PV? THIS ? Surfaces? Cost ? [if the building is positive energy, it is producing ...]

There are 70m² of photovoltaic panel (not too difficult to be positive with that) and 12m² of thermal panel.



At the insulation level, there is 18cm (in color I would say PSE) on the front. On the roof I don't know.


Basically not enough detail to get a precise idea.

http://www.atlb.ch/resources/fichiers-p ... .11.12.pdf

Re,

Aerial, it is said in the report that it has 80 M² total of panels (I did not see the 70 m² of which you speak but that must be the PV so there remains 10 M² of thermal panels for hot water and heater ) .

The owner especially says that he earns money thanks to the pv, because the rest is enough and only a small part of pv (when one hears how he says "I make money even" or something like that. the end;)) leaves to pay for the pellets needed to heat his house in very cold weather.

How cold is the region? - 15, -20 ° C ??

What I take away from this realization is that when we want to have can, apart from the notion of investment (which according to the redemption rates for the pv for example can be reimbursed fairly quickly), the other investments, are not calculation not in the same way.

I explain my point of view:

There is the "old peasant" method of calculation (it is not pejorative at all, it is quite simply how all the agrico did at the time of my grandfather in the countryside):

I look at what it costs me at the time of purchase, period.

There is that which consists in making a relation between immediate expenditure and return on investment.

And finally there is that which is much less measurable on our scale, which consists in taking into account in addition the longevity of the building.

A wall protected from environmental attacks will last much longer than a bare building (unless you count the paint or the 3 cm coating as active protection;) which would be a simple error when it freezes it freezes;)), and when the sun hits hard it hits hard etc etc).
So without talking about comfort, less expensive expenses after work (the advantage of an ITE is that you can always live in it during the work;), when changing frames also, even when redoing the roof may have always lived in it except at -15 ° it is!), good resistance over time of the starting characteristics (in the case of wadding at worst, an addition by injection is always possible (a thermal camera shot) and have seen where it is necessary to act), in short in addition to all these advantages, there remains the durability of the building, and little more that added value (for those who think that it is a mandatory condition) which increases, and which will not decrease not, even if the rest of the market evolves technically to arrive at the same levels there will be no financial loss and / or valuation (unless the weather changes so much that everything that has been done does become obsolete but good. ..) unlike a building made with ec of the ldv, which will always remain of the ldv therefore which settles in time (except in the case of high density panels may be but quite expensive to buy in France) this resulting in a reduction quite quite physically and financially 'insulation resulting in a new series of works after 15 years max etc etc.

In short, the house holds up over time, the children inherit it and they have practically nothing to do in it as work, the savings continue because a simple regular maintenance is sufficient etc etc ...

Finally, no one said that it was absolutely necessary to buy overpriced materials to redo your house in the best way possible.

Personally I am a follower of straw for example (;)), between 1.2 euros and 2.5 euros per boot, basically you have 10 boots per m², that makes us 25 euros for an insulation of 30 cm, and for the ceiling similar, which does not burn and which can be insensitive to water if we do not take wheat but rye for example;), we can even manage with a farmer so that he plants rye and find an arrangement for the harvest ... Then a good lime sand coating and hop insulation not fair sustainable flesh easily modifiable transformable repairable at low cost etc etc ...

Basically the standards are safeguards but in the end everyone does as they want;) ...

The wood, you buy the standing or log wood and you have the sawmill cut directly to the you still earn, heating for those who can a Canadian well


After all that, a sudden in time it is clear (there are also associations like the beaver of the west for the Bretons who advises assists and does community work for renovations and self-construction) but that everyone prefers to give his life to his job or give his life for his own and among other things make a little personal effort when present and future pollution (which in this case can also be taken into account in calculating the profitability of a real and good renovation or / and construction).

In the end you have to take this as a beautiful example, which shows that it is possible, but in no case does it give the magic recipe that everyone is looking for;) and which does not exist, the holy grail of construction and renovation ... if someone finds it I am a taker;), I would take at the same time two over-unit motors, an anti-gravity machine and a time-traveling machine ;);)

hihihihi,

To return to earth, I do not know if you have seen the photos, but the sun is rather grazing, and despite everything it is enough!

By cons, the facades (or there are no PV panels) are super sunny ... So what would it be if we put there too ...!

There is no longer any need for these panels to be produced with "offset machine" type processes (it is in development and it even already exists) and even photovoltaic paints, so that production costs finally collapse and we can put away the buzz of supernulity in the closet (the slip is wanted )

bidouille23 wrote:The owner says above all that he earns money thanks to the pv

Another one who steals his neighbor via taxes and subsidies ...

The project itself is very good, it's the only downside.

bidouille23 wrote:after viewing the report, I have only one thing to say, passive houses should be mandatory

When I see someone say "what I think should be obligatory", I pull out my guillotine.

You should have all the info: recipes used, figures, etc., and put that as a model. Isn't there a directory of projects of this kind to share experiences?

Meuuuuuh No, we are in CHuiche here *, not in Gaulle!

With us, everything is "clean" not true?

We are the whitening specialists! Those who tackle tax evasion know nothing about it, with Wall- $ treet and Goldmån- $ achs, the accounts are putzés long before!

* CH = Canton of Switzerland!