Researchers in building physics at the University of Weimar are investigating how they can improve the energy balance of existing buildings and urban districts and reduce CO2 emissions. Using a digital architectural model, they are also looking at the effects of temperature developments in the interior of a building. For example, they take into account how windows, ovens and human body heat affect temperature development.
In their investigations, the researchers found that the temperatures of an unheated example apartment on the second floor with three external walls would drop to an average minimum of around 7 to 8 degrees Celsius in an average winter in Germany without heating. Their investigations are based on the assumption that gas cannot be used for heating due to the lack of gas supplies.
They based their calculations on an apartment building in Buttelstedt, Thuringia, from the 1970s, whose windows and exterior walls were renovated in the 1990s. "In Germany, there is a very large proportion of residential buildings that are of a similar geometric and energy quality," says Mara Geske, Head of the Energy Working Group at the Chair of Building Physics, explaining the choice. Interested parties can read more about the topic in an interview with the head of the working group on uni-weimar.de.
Source: www.idw-online.de/www.uni-weimar.de
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