Figure 15. Annual solar radiation over Switzerland.
Solar radiation is a major source of energy for our house. Here is an overview of how much energy is actually available to us from the sun. The map in figure 15 (pvgis-solar-optimum) shows the yearly sum of irradiation available to optimally inclined collectors in different parts of Switzerland. The high intensity regions in brown in the south are the Alps. Our house will be in the north near Zürich, in one of the least sunny areas of the country. But, there is still quite a bit of energy to be gained as can be seen in the graph in figure 16.
Figure 16. The monthly solar radiation measured at our reference weather station in Buchs, broken down by the cardinal directions. That drop in the intensity in the south in June is strange. Must look into that.
Figure 17. The average monthly temperature.
Data and calculators covering most of Europe is available here → Photovoltaic Geographical Information System
Hi ersie
ReplyDeleteStill evaluation or fakt.
Where will you place them.
wellingtonia
Hi Wellingtonia:
ReplyDeleteThe house uses solar radiation directly as you know, especially through the windows on the south side for winter heat gain. Of course, we have to organize shading for the summer months so that the house does not over-heat.
One can also think of the luft-wasser heatpump as connected to the solar radiation. In fact, things like Erdregisters (which we do not have in our plan, but I'm mentioning it anyway) should be ideally installed in areas where they are not shaded from the sunlight.
To come back to your original question: we plan to have the planner calculate the effect of having maybe 8 m^2 of solar thermal collectors integrated with the warm water and heating systems. We have to consider the storage tank (Speicher) etc, etc, etc... The positioning will also have to calculated at that stage.