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LightFromFacade - Optimized Day- and Artificial Lighting by Facades
Multfunctional facades with integrated artificial- and daylighting systems will be simulated and evaluated regarding lighting and energy (lighting quality and energy demand). The results create basics for further façade developments and for academic education.
Titel und Synopse
LichtAusFassade - Optimierte Tages- und Kunstlichtversorgung über Fassaden
Multifunktionelle Fassadenelemente mit integrierten Kunst- und Tageslichtsystemen werden lichttechnisch und energetisch simuliert und evaluiert (Energiebedarf und Lichtqualität). Die Ergebnisse sind Grundlage für weitere Fassadenentwicklungen und universitärer Ausbildung.
Project description / tasks
Status
ongoing
Summary
Starting point / motivation
The façade, as an interface between the outdoor and indoor climates, is a decisive factor for energy consumption of a building. It controls daylighting, influx of solar energy and heat flow. Apart from energy, the façade is also a decisive factor for visual and thermal comfort. Light is the most important information medium, (visual perception), and demands on the illumination of work places are becoming more prevalent. When energy for heating demand is reduced due to daylight and artificial lighting in winter, the need for cooling is increased in summer as the electricity for illumination must be re-cooled by electricity.
Multi-functional pre-fabricated façade elements open up possibilities for the building industry, in that they are able to operate faster and in a more flexible manner using quality controlled building components. The more technical functions that the façade can fulfill, therefore results in less complexity for the interior work, which is especially decisive in the area of renovation.
Example of innovative facade: ZVK Wiesbaden (Arch. Herzog & Partner)
© Bartenbach LichtLabor
Contents and goals
The K-Project, "Multifunctional Plug & Play" (MPPF), which started in April 2008 and is aided by the COMET Program, deals with the development of such façade elements. During the course of the work to date, is has however shown that the aspect of daylight utilization and artificial lighting out of the façade, is not sufficiently taken into account from a personal or a financial point of view.
The project at hand, therefore represents a "Side Project" in the non-K area of MPPF. By inclusion of new partners (Bartenbach LichtLabor GmbH, as a representational case), the aspect of comfort and the energy requirements for heating and cooling should be dealt with more intensively.
The aim of the project is the development of energy-based optimized concepts for the provision of daylight and artificial lighting from the facades for the interior spatial areas. For this purpose, the luminaires for artificial lighting should possibly be already integrated into the pre-fabricated façade.
Methods of treatment
The questions which would still have to be clarified are, amongst others, how deep can daylight and artificial light be directed from the façade into the rooms, so that sufficient lighting can be achieved and at the same time providing visual comfort (e.g. without glare). In this respect, not only the glazing and shading elements but also natural light redirection systems and luminaire types, play a decisive role.
After extensive research in this field, work already carried out, a market analysis of typical building forms in residential and office domains, together with daylight systems available on the market and experience; reference rooms with energy efficient and light optimized concepts including controls will be defined. By means of lighting simulations and energy-based building simulations in respect of lighting quality, overall energy requirements of the rooms for heating, cooling and electricity together with the costs will be evaluated.
Expected results / conclusions
With the involvement of a façade construction company, integration of the artificial lighting and the daylight elements (lighting, sun-screening and glare protection) will be ensured.
The results will be a basis for further facade developments and will be introduced into workshops, training courses and also into educational courses of the participating university institutions (e.g. TU Graz, Lichtakademie Bartenbach, etc.).
Project partners
Project management
Wilfried Pohl
Bartenbach LichtLabor GmbH
Project or cooperation partner
- Institut für Wärmetechnik, Technische Universität Graz
vertreten durch Prof. DI Dr. Wolfgang Streicher - Hans Höllwart - Forschungszentrum für integrales Bauwesen AG
vertreten durch DI Dr. Mario J. Müller
Contact address
Bartenbach LichtLabor GmbH
Wilfried Pohl
Rinner Straße 14, A- 6071 Aldrans / Innsbruck
Tel.: +43 (512) 3338-0
Fax: +43 (512) 3338-88
E-Mail: Wilfried.pohl@bartenbach.com
