Abstract: Die Nutzung von solarer Energie beschränkt sich nicht auf die Gewinnung von Strom
und Wärme. Solare Gebäudehüllen nutzen auch das Tageslicht intelligent. Von der
Hochschule Luzern kommt jetzt eine Planungshilfe dafür.
Abstract: In their coeval descriptions Procopius of Caesarea and Paulus Silentiarius emphasise the unique effect of the light and the precious furnishing of the Hagia Sophia after its completion under the emperor Justinian. In order to comprehend the original situation and thereby approach the intentions of the constructors and planning architects, a number of alterations on the building have to be reversed. For this purpose a computer model has been created drawing on the building survey of R. van Nice which reconstructs the architecture in detail and the marble surfaces with their exact coloration. The distribution of direct and indirect illumination by daylight was simulated with the help of the Open Source software package Radiance and made visible using the High Dynamic Range Imaging-method. In this way the pictures reach the capacity and quality of human vision and generate the effect of the reconstructed architecture in an adequate way.
Abstract: Support for complex fenestration in lighting simulation has been in the
focus of recent Radiance development. The concept of contribution
coefficients has driven not only climate based simulation, but also
allowed to efficiently study variants for fenestration designs and to
derive the area-averaged BSDF from geometrical fenestration models.
With the new refined algorithms implemented in Radiance, we show from a
users point of view what solutions are currently offered to model
components of fenestration systems which are available on the market. As
a test case, an interior space is modeled in detail. Problems arising from combining the new approaches to model complex fenestration when
aiming at daylight metrics currently in use and the transfer of measured data are discussed. Fields for future development are proposed.
