Floor plan design with cooling load calculation

I also gave up planning with a €130 software (see my thread on house planning software...). It's not worth the effort, since the architect can't use the data afterwards.

Yes. We also gave up having an electrician do the wiring plans and a cook do the mechanical design. Since we have the respective specialists do it, it's working quite well.

You don't take work away from the specialist by clicking something together as a layman without any idea. On the contrary.

Yes. But in winter you simply don’t have the same amount of sunlight. It is significantly higher in summer. Therefore, you can’t just take the heating calculation and reverse the sign of the sunlight, he is right about that.

Good goddess, I’m not even sure if you don’t understand math or physics here. And this has nothing to do with seasons either. This is not about signs at all.

First of all, thank you for the numerous feedbacks and comments.

Regarding the calculation of the cooling load. Practically, it is not about how much less I have to heat due to solar radiation in winter, but how much more I have to cool in summer to not exceed a certain room temperature over the course of the day.

To put it bluntly, it can make a big difference whether I have to heat with ~ 10 W / m² in a passive house in the depths of winter or if in the height of summer > 100 W / m² (direct) solar radiation heats up the place.

in the depths of winter having to heat with ~ 10 W / m² in the passive house or in the height of summer having > 100 W / m² (direct) solar radiation heat up the hut.

That was part of our heating load calculation, for each month the solar gains over all window areas, and that was mathematically very much

As far as the calculation of the cooling load is concerned. Practically, it is not about how much less I have to heat due to solar radiation in winter, but how much additional cooling I need in summer to prevent a certain room temperature from being exceeded during the day.

Put bluntly, it can sometimes make a big difference whether I have to heat in the depths of winter with ~10 W/m² in a passive house or if direct solar radiation of >100 W/m² heats up the place in midsummer.

There are calculation methods for this, e.g. according to DIN 4108-2, with which the summer heat loads to be dissipated can be calculated. As far as I know, software support is available from the same programs that also support the usual determination of heating loads and the creation of thermal protection proofs, calculations, and energy certificates.

Common examples are, for instance, Hottgenroth (with countless extensions, including CAD, typical architectural software) or also the BKI Energieplaner (more limited to energy applications, not as nice graphically in the output, and the data input is also more cumbersome).

but how much I have to cool additionally in summer in order not to exceed a certain room temperature during the day.

Comparison in the car, 1. Automatic climate control runs at full blast to reach 22°, which is not exactly pleasant. 2. Or manually set to level 1 to run slowly, without drafts, a comfortable temperature that adjusts itself depending on the heating output. We always take 2