Advanced daylighting systems and combined lighting and thermal simulation

13th Conference on Advanced Building Skins, Oct. 1-2, 2018, Bern, Switzerland, website: abs.green
October 2018 - Posted: 10/5/2018

Advanced daylighting systems and combined lighting and thermal simulation


Abstract - As the interface between interior and exterior spaces, the façade plays a key role for the thermal and visual conditions in buildings. Advanced daylighting systems should fulfill various and in parts contradictory requirements: they must provide sufficient and adequately distributed natural lighting, avoid visual discomfort (glare) while allowing visual contact to the exterior, provide solar gains for heating in winter and protect from high radiation against overheating in summer. Integrating these functionalities often results in products which are more complex than conventional sunshading systems and thus are often not properly characterized and cannot be applied in standard design workflows. We present approaches for the characterization of advanced daylighting systems and introduce DALEC, a simplified tool for combined lighting and thermal simulations that can account for such systems. A comparison between DALEC and TRNSYS proves that the simplified approach is adequate for integrated simulations in early design phases.


By: David Geisler-Moroder, Christian Knoflach, Silvia Öttl, Wilfried Pohl

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