WUFI

Hello,

working on my dynamic simulation I came up with the following output. I managed to fix the incident solar radiation (I think) by adding an hourly external file, for each window. But I don't understand the exchanges with opaque elements: they seem to grow in summer, though I would say the opposite (winter>summer).

Am I doing something wrong?

Hello,

looking at your project, the heating demand was very low (about 180 kWh/a). So i checked the simulated inner temperature. It was often pretty below the minimal design temperature. This is because of the heating capability of the heating system. In your project it was set to 50 W, so you only heat with 50 W. However I would always recommend to oversize this heating and cooling capacity, for example 50 kW. It will simulate the necessary heating demand because of the heat balance in a zone, to keep the inner climate at the boundary conditions (minimum and maximum design temperature).