Passive house, heating combination with solar, energy recovery, photovoltaics?

Yes, optionally, but it depends on the overall concept.

This must be calculated precisely to see what is best.
Also alternatives. A passive house is very sensitive here, you can
even push it up to an energy-plus house.
But I won't do that for you here in the forum.

Best regards

Hello everyone,

Construction planning can get quite complicated. Have you ever thought about concrete core activation of the exterior walls through heating loops. The exterior walls often represent the largest surface area of a building to be heated and could also temper living spaces over a large area at lower temperatures than underfloor heating. During my Google search under "Heizschleifen" I came across an interesting building physics proof.

Regards

The problem, however, is that the warmer the building envelope is, the more energy is also released into the environment. It is better to use interior components as storage. LG

Hello parcus, I have tried to download the described file "Wärmespeicher als mediendurchströmter Festkörper". Unfortunately, it failed. I am very interested in the content of the file. Is there any other way for me to access it? I want to use solar thermal energies that are available daily, but which only become usable from 30 - 32°C by underfloor heating due to lack of mass and lack of component surface area, for tempering the interior and exterior walls. For this application, the building walls must meet certain requirements. The exterior wall must have a storage core that is very well thermally insulated towards the outside. The interior walls also receive a storage core. This way, in my example, I obtain a heatable surface that amounts to twice the floor area. Since the building volume remains the same size, the required temperature demand for the heat-emitting walls must be below the minimum temperature of an underfloor heating system. Thermal energies below 30° distributed over the walls as a surface heat warm the rooms pleasantly and cost-effectively as radiant heat. I accept that the U-value of the exterior wall loses its definition in this type of construction. I found information about this construction method by googling under holzspanstein. The storage wall system presented there seems logical and buildable to me. Looking forward to the answers on this topic. Regards

Hello,

right-click "save as" should work.

But somehow I can't understand your plans.
Assuming a floor has 10 x 10 m, so 100 sqm.

That would be about 500 kg/sqm for reinforced concrete, so about 50 t.

The wall area 40m x 2.75m = 110 sqm - at least 10% window area
is also almost 100 sqm.

That would be about 371 kg/sqm from the brochure, max. 37 t.

so about 26% less mass.

In addition, about 50 - 70 kg / sqm are specified as effective storing mass.

That would be a loss of mass of 86 - 90%!

The interior walls count anyway as the building core.
Also, you want to warm up the outer wall to 30°C?

For wood concrete it is also important, in order to avoid allergies, to use cement with as low chromate content as possible.
But I don’t find this information in the eco-certificate.

Sorry, but either I don’t understand something, or the whole thing is questionable,...

Best regards

Hello parcus,

right, I didn't quite understand. I will clarify my thesis and get back to you after the weekend. But allergies caused by cement additives in wood concrete? Why specifically in wood concrete? Where is the medical report on this? I've never heard of it! Why not allergies caused by concrete ceilings or precast lintels or screed concrete or...

Regards