The object of the joint project FLEX-G 4.0 is to develop a cost-effective retrofit solution of innovative switchable films that can be laminated as easily as possible onto already installed windows and contribute to reducing the overall energy transmittance (g-value) of the windows and thus the energy demand of the building.
The main objective of the project is transfer of research results into suitable system designs and manufacturing technologies for large-area electrochromic films to be installed directly on the construction site. Furthermore, robust processes for "easy" on-site application of these films to windows and facades in existing buildings are to be developed. As an integral part of the system design, solutions for mains-independent energy supply and suitable switching parameters and sensor technologies for wireless, automated control of the switching state of the films are to be researched. Another objective includes the demonstration and experimental quantification of the energy saving potential in two operational buildings in the public sector.
For demonstrating and monitoring purposes, it is planned to integrate the retrofit films at an existing building, the 46th Dresden Secondary School, as well as in the newly constructed laboratory building of Fraunhofer FEP. In addition, the Fraunhofer Institutes FEP and ISC will provide teaching materials for science subjects and offer internships for pupils. Involvement in the measurements and evaluation of the results together with the pupils is also planned. This is intended to arouse the interest of the next generation in various technical and scientific professions and also in energy-saving, sustainable technologies and their development.