New house RT2005 towards BBC (electric heating)

[jessyzz]

Hello,
I just moved into my new house in Touraine. The thermal balance of the manufacturer is class C: 113kw / m² / an / EP,
I'm in the 2005 RT, I'd like to switch to BBC, going from 113kw to - 50 must be feasible!
Description: single storey house 110m² living space exposed North South, north, kitchen, entrance, an office and a room.
South 2rooms and living room, all double-glazed low-glazed door frames with argon blade, the bay window of the living room too.
Walls: 25cm Siporex inner insulation (alas) 10cm (I believe) rockwool + BA13. The attic is convertible 30cm of rock wool blown
covered by a wooden floor: storage ... The partitions int: placostyle. The vmc: double flow on Canadian well.
Heating: electric for the moment ... Electrosolar water heater.
I think that by changing the heating mode I should gain a lot of watts: I would like a pellet stove. The plumber I went to see sells and installs Palazzetti
he advises me a small power 6kw waterproof stove with a vertical double jacket casing (I have a roof chimney installed) I am waiting for 2 quotes sent by "blue sky" edf. On the internet (50 million drinks) they say that the invicta is good. I also want to build a brick wall in my living room behind the stove which would "build up heat."
What do you think? Is this playable? Should I add wool in the attic, which stove do you recommend? I believe that the thermal study did not take into account my Canadian well (self-build)

[dedeleco]

View:
https://www.econologie.com/forums/renover-sa ... 57-20.html

In Touraine, there is ordinary wood and as the pellets are quite expensive, I think that a stove or boiler capable of burning all the plants of the garden and cheap wood or even the abandoned and free to recover is much more economical to long term pellets where the consumer is captive of its supplier who practices prices quite high that follow a little above half the price of fuel!


There is also underground storage of the great heat of summer provided by solar panels with concentrators a few meters underground (with insulation or at great depth) to recover it in the winter, ie a Canadian well. or provencal improved by heating the earth deeply to replace the average heat over a year (already effective ordinary Canadian well) by that much higher of the summer !!
Thus, one would not need to chase the last thermal losses of the house, offset by a greater underground storage volume of this summer heat and a larger solar collector surface.
It is not safe, once industrialized, that it is more expensive than a thick outer insulation with change of all the windows, hunting of all the thermal bridges, waterproofing, VMC double flux, etc .. to make passive an old house with garden !!!

[bernardd]

In Touraine, there is ordinary wood and as the pellets are quite expensive, I think that a stove or boiler capable of burning all the plants of the garden and cheap wood or even the abandoned and free to recover is much more economical to long term pellets where the consumer is captive of its supplier who practices prices quite high that follow a little above half the price of fuel!

As long as we do not have domestic pellet machines :-(

With a flat on combustion yields and automatic operation compared to pellets, especially on a stove which we want to admire the flame.

There is also underground storage of the great heat of summer provided by solar panels with concentrators a few meters underground (with insulation or at great depth) to recover it in the winter, ie a Canadian well. or provencal improved by heating the earth deeply to replace the average heat over a year (already effective ordinary Canadian well) by that much higher of the summer !!

Totally agree on the principle, and the financial interest.

But at what temperature are you going to store heat? If it is below 90 ° C, isn't it better to "simply" store hot water in large volumes?

[dedeleco]

The ideal is to recover excess heat in summer for the winter !!
All systems like:
http://en.wikipedia.org/wiki/Seasonal_thermal_storage

a store designed to retain heat during the summer months. The heat is typically captured using solar collectors, or other energy sources are sometime used separately or in parallel.

either any way to store the heat of hot summers to use it during cold winters !!!
Typically the heat captured by a solar collector (other sources are possible) is stored underground via heat exchangers deep enough with thermal insulation to decrease the depth and increase the shelf life of this heat beyond 6 months.
It is striking that on wikipedia seasonal thermal storage (Seasonal_thermal_storage) does not exist in French !!

http://www.greenershelter.org/index.php?pg=3
http://www.icax.co.uk/report_on_iht_by_trl.html
http://www.icax.co.uk/thermalbank.html

The earth conducts quite little heat and therefore to more than 3 to 6 meters the heat is stored on more than 6 months and therefore all the heat of the summer that one manages to store there is conserved for the following winter.
So you can heat and turn into a passive house, an old house not very well insulated, without changing anything except the source of heating taken on the underground storage of the heat of summer!
Many storage means are possible, not only rollers.
Drilling underground with exchangers with the earth is possible.
http://www.iea-eces.org/energy-storage/ ... orage.html
http://www.dlsc.ca/
http://www.dlsc.ca/borehole.htm
A well-insulated underground pool of a few dozen m3 is enough to keep the heat of the summer.
The energy can be stored in an adsorption reaction or a physical or chemical reaction (such as the fusion of sodium sulfate hydrate with 8 water molecules)
A concrete example of realization:
http://www.earthshelters.com/Ch_1.html
http://www.earthshelters.com/
Given the very varied means of achieving such a transfer of heat from summer to winter, the difficulty is to choose the cheapest and adapted solution.
In my opinion we can avoid overhauling or even remodeling the house by increasing the size of the heat storage system.
The solar thermal collector surface is determined so that the heat collected in summer is greater than that used in winter, and if the house is not good economy, simply increase the surface.
There is an optimum between improving the home and decreasing the sensor area and the heat storage volume.

[bernardd]

It's very effective, and I know it because I'm familiar with a semi-buried house: in summer and winter, the basement is the most pleasant place to live, without heating.

But to fix the ideas, it is necessary to store which energy?

[dedeleco]

But to fix the ideas, it is necessary to store what energy

We store the energy of the sun in the summer that falls on the roof where solar thermal sensors that drive the heat underground (heat exchanger conventional coolant, (water alcohol etc ..), to the earth at depth, while in winter it heats the interior of the house!
One can have a good heat conductor between the roof (or an outdoor slab well heated by the sun) and the earth deep down. A good conductor metal, aluminum, copper, iron at the same time, even massive concrete, convective heat exchanger, can also drive this heat and heat the earth deep to restore it in winter, but it must be able to cut in winter good contact thermal summer.
The principle is simple: heat the earth in hot summer (or swimming pool, or heat accumulator) well insulated deep, to recover this heat in winter in the opposite direction.
The means to realize it are immense by using the good known and varied heat conductors and insulators between the hot surface in summer (roof, slab, sensor, etc.) and deep underground storage (3m and more) or any other means provided that it is well insulated to keep the heat between summer and winter !!! (isolated swimming pool, tank with chemical or physical reaction, etc.).
The large number of possibilities at various prices must not block achievements, which appeal to the imagination of all.
The challenge is to choose the cheapest form, even if it is not at maximum yield, increasing the size.
The land under the house or the garden at depth costs only the boreholes a few meters to bring the heat. The rudimentary solar collector (black plate with water pipes glycol exchanger, even without glass) is one of the cheapest and effective to be heated strongly by the sun in summer (but insufficient in winter where the heat stored in summer replaces it).