Heating with cold

In order to achieve the announced target, to divide the heating cost by ten, it lacks a factor 3 and something. The heating method will give this. You have to take a thermodynamic heating, a refrigerator, a freezer, an air-conditioner that works the in reverse manner : it takes cold calories from outside, change them into hot calorie by the mean of compression, and pour them into your heating pipes. Have you ever inflate a bycicle tire with a hand pump and didn't you let it go because it had become burning. : that's all the thermodynamic heating mystery, thermo because it heats, and dynamic because it moves.
When a gas is being compressed, it warms up, when it is decompressed, it is slackened, and it cools down. You can notice it each time you use an aerosol, particularly a deodorant.
It is cool down to colder than outside temperature, as the calories go always from the hot body into the cold body, it will take the calories from outside, from the air, from the water, from the ground depending on the case, and then it is compressed to hotter than the inside temperature of the floor of the house, and it will yield the calories to the floor. We will finally have transferred thermal energy from a cold outside into a hot inside, increasing the temperature of the caloreis. It is like we increase the level of water with a pump, the amount of water didn't change, but the pressure changed. That is why this system is called "heating pump". The compressor functions like a pump, excepted that it pumps a gas instead of pumping a liquid.

Two main systems exist, either calories are taken from air, it is the aerothermodynamic system, either they are taken from the ground or from a phreatic table, it is the geothermodynamic or (badly said) geothermic system.
The big advantage with these system, it is that they supply more thermal energy than they consume electric energy, because a big part of the energy is withold from the outside environment. We call the ratio between these two quantities the efficiency coefficient.
Aerothermodynamic systems have a freezing problem when the air is humid and close to 0°C, which lower their efficiency coefficient by about 3.
Geothermodynamic systems have a efficiency coefficient close to 4. They are more constricting, hence more expensive, to put in place because it is necessary to either to drill a boring, either to burry few hundreds meters of collecting pipes at 80 cm of deepness in an area where it is no more possible to make holes or to plant big trees.

In the case of the house calculated previously it as been chosen the geothermic system.

3*4=12, heating electric consumption has been divied per 12

3500 divided by 4 makes 875 Watt, a compressor of 1 kW is sufficient to heat the whole house, to be compared with a 20 kW oil-fired boiler.

With these systems, low temperature heat is obtain, 25 to 30°C, it is necessary to have a big surface for diffusing the heat. It is all the opposite to the boilers which burn a fuel and gives water at 65/70°C which is made circulating in small radiators. That is why it is all indicated and without any drawbacks to use the floor to diffuse the heat.

It is now very important to insist on the role played by the outside insulation. As the heat dissipating pipes are drowned inside the screed which rests on the load-bearing tile, with a small thickness of insulating to favor slightly the dissipation toward the florr, the load-bearing tile take a part of the heat.
And like all the walls are on the load-bearing tile, the heat goes up in these walls. The floor, the walls, the ceiling which is heated by convection, all this form a huge low temperature radiator. Air is never heated, it is pratically at the same temperature than the surfaces, it keeps its hygrometric degree and hence its conductibility, it is never dried like the air that goes through radiators at 65°C where it is necessary to put small water pot to give it back a little humidity..

There is a perfect equilibrium between our energy dissipated by radiation and our energy dissipated by convection with the air. These are the perfect conditions for thermal comfort.