We shade effectively

News, 24/02/2022

Currently, one of the key aspects of the energy efficiency of buildings is the correct shading of direct sunlight. Therefore, CTU UCEEB, in cooperation with the ZEBR company, deals with new possibilities in this area as part of its research.

The joint projects Exterior shading system with integrated functions for skylights (now completed) and Advanced shading systems for buildings (ongoing) are aimed at maximizing the potential of the shading system. This is achieved, for example, by integrating photovoltaic cells, so that it is possible to efficiently use solar energy in the form of electricity, which is normally only shielded.

Another common denominator of both mentioned projects is the optimization of the shape of the shading slats and their management with the aim of achieving the highest possible thermal comfort in the interior while simultaneously maximizing the production of electrical energy. The purpose of the optimization processes is also to improve the optical conditions in the interior thanks to the shading of overlit areas near the windows and the direction of light by means of reflections to more distant parts of the rooms.

A fundamental difference between the projects is the area of use of the systems developed within them, and thus also the boundary conditions for optimizations and related technical difficulties. While the name of the first project suggests that it is a shading device for windows (often of smaller dimensions) in an inclined plane, and thus more exposed to direct sunlight at the time of its maximum, the second named project focuses on large glazed areas of administrative and public buildings.

The project Exterior shading system with integrated functions for roof windows was supported by the Technology Agency of the Czech Republic as part of the GAMA program. The project Advanced Shading Systems for Buildings was supported by the Operational Program Entrepreneurship and Innovation for Competitiveness.