The human being perceives approximately 80-90 percent of information visually. Great significance is therefore assigned to the configuration and planning of the visual environment that suits this requirement. At the same time, lighting engineering solutions are subject to energy efficiency requirements. With approximately 10 percent total electricity consumption in Europe used for lighting purposes, efficient lighting solutions can make a substantial contribution to conservative resource utilization and achieving the goals of climate policy.
Against this background, the EER working group on Lighting Technology and Passive Solar Systems develops projects for facade optimization, general lighting needs of buildings and for street lighting. Facade technology is an important sector regarding the energy-efficient supply of solar energy and light to buildings. Carefully planned complex fenestration systems allow using interior spaces (like offices) without supplying heating energy or artificial light for about 80% of the time, thus significantly reducing the energy need for heating and lighting as well as the use of light sources. Moreover, daylight (human centric lighting) has a direct effect on human beings, for instance on controlling the circadian rhythm. To date, there is no planning safety regarding the light technology of façades. There is a lack of data on façade systems and appropriate advisory software, which can lead planners to make wrong decisions.
The EER working group 'Lighting Technology and Passive Solar Systems' focuses on developing assessment methods, specific software and technologies. Besides performing measurements and tests, the group conducts validation studies and offers consulting services, including knowledge transfer.