Bachelor's thesis Fabian Lesjak

 

Development and analysis of an automated blind control at the E.ON ERC main building

Analysis of the behaviour of the automated blind control for the year of 2018 during the working hours from 8 to 18 o'clock. The first graph displays the mean number of adjustments or movements of the blinds in a room. Copyright: EBC Analysis of the behaviour of the automated blind control for the year of 2018 during the working hours from 8 to 18 o'clock. The first graph displays the mean number of adjustments or movements of the blinds in a room.

Glare can cause discomfort for humans and decrease their productivity. These distractions can be reduced, if the blinds of the window are lowered and the direct sunlight is blocked. At the same time, the window is the occupant’s connection to the outside world and the view has a positive impact on their wellbeing as well as their productivity. To make maximal use of these effects, the blinds should not be lowered to far. To achieve a compromise between these contradicting restrictions an automated blind control is implemented, which lowers the blinds only as far as necessary as not to reduce the benefit of the view. Additionally, it limits the amount of changes made throughout a day, so as not to disturb the occupant's with the constant movements.

As input parameters the solar radiation measurements from the “Deutscher Wetterdienst”, the German weather service, are used. This horizontal radiation data has to be transferred into vertical solar radiation data, to represent the interior radiation in an office. The influence of the windows is also researched with the help of experiments and included in these calculations. Finally, the algorithms performance over the course of a year is analysed and discussed.