Selected Issues on Material Properties of Objects in Computer Simulations of Floodlighting

Rafał Krupiński, Henryk Wachta, Wojciech Maciej Stabryła and Cedric Büchner
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Rafał Krupiński: Lighting Technology Division, Electrical Power Engineering Institute, Warsaw University of Technology, 75 Koszykowa St., 00-662 Warsaw, Poland
Henryk Wachta: Department of Power Electronics and Power Engineering, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszow, Poland
Wojciech Maciej Stabryła: Faculty of Theology—Jerusalem Campus, Studium Theologicum Salesianum, Salesian Pontifical University, Jerusalem 9107202, Israel
Cedric Büchner: Faculty of Catholic Theology, Ludwig-Maximilians-Universität Munich, Chair of New Testament Studies and Biblical Hermeneutics, 80539 München, Germany

Energies, 2021, vol. 14, issue 17, 1-24

Abstract: This paper addresses issues with computer simulation involved in designing illumination for architectural structures. In particular, the reflectance and transmittance of materials were studied with respect to their influence on luminance values, thus directly the power levels for luminaires applied under particular projects. Raster images derived from digitally processed daytime pictures were used to precisely define material properties. Bitmaps were tested with regard to measuring and editing materials with a widely used graphic application. A real architectural object, the Basilica of the Dormition in Jerusalem, served as the test object. A floodlighting design was performed following a complete analysis of all electrical and photometric parameters. Luminance distributions were analysed comprehensively. Hence, the data allowed for an assessment of the lighting design compliance with guidance given by International Commission on Illumination (CIE) for floodlighting objects and its required standards. The floodlighting utilization factor of the lighting solution developed was also verified, as it is the input parameter for evaluating not only the energy efficiency for the installed lighting system, but also the impact it has on the surroundings, in this case, the project that is to be implemented.

Keywords: lighting technology; floodlighting; reflectance and transmittance; floodlighting utilization factor; computer simulation of lighting (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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