Ok thanks for the tip. I entered my intended wall structure. For me, the U-value with the insulation in the installation layer is somewhat better than without...
Basically, my question is not about "whether it makes sense or not" but more about:
Could this create any effect that I don't want or that leads to problems.
The OSB interior wall is also not designed as a vapor barrier. That means electrical outlets and holes are not sealed airtight...
… that's why it will get wet. See ubakus. I showed you that specifically.
Take a look at the colorful little pictures in the post above yours and think about what these water droplets could be...
When I entered my wall construction, neither "droplets" were shown.
I suspect that droplets mean the dew point would be here? Correct me if I'm wrong...
… that’s why it will get wet. See ubakus. I showed you that on purpose.
I am an absolute layman regarding the U-value topic. But I assumed that a lower U-value is better than a higher one (generally speaking). In my simulation, neither of the two showed any droplets. Why can it "get wet" with the variant with insulation on the inside?
I suspect droplets mean that the dew point would lie here? Correct me if I'm wrong...
Correct.
I am an absolute layman when it comes to the U-value topic. But I assumed that a lower U-value is better than a higher one (broadly speaking). In my simulation, neither droplets were visible.
The U-value indicates the insulation of the wall. But it has absolutely nothing to do with moisture in the insulation layer. Simplified: Due to the internal insulation, the dew point shifts toward the inside of the exterior wall. Since your installation layer is not airtight, moist air passes through the internal insulation – which is only mineral wool – and condenses on the cold inner side of the exterior wall. This does not happen overnight. But over time.
I have now received information from my energy consultant that I can carry out the installation level without any concerns, as it is located in the warm area - since it is also insulated from the outside