Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Optimizing performance of the lightshelf by modifying ceiling geometry in highly luminous climates
The impact of ceiling geometries on the performance of lightshelves was investigated using physical model experiments and radiance simulations. Illuminance level and distribution uniformity were assessed for a working plane in a large space located in sub-tropical climate regions where innovative systems for daylighting and shading are required. It was found that the performance of the lightshelf can be improved by changing the ceiling geometry; the illuminance level increased in the rear of the room and decreased in the front near the window compared to rooms having conventional horizontal ceilings. Moreover, greater uniformity was achieved throughout the room as a result of reducing the difference in the illuminance level between the front and rear of the room. Radiance simulation results were found to be in good agreement with physical model data obtained under a clear sky and high solar radiation. The best ceiling shape was found to be one that is curved in the front and rear of the room.
Optimizing performance of the lightshelf by modifying ceiling geometry in highly luminous climates
The impact of ceiling geometries on the performance of lightshelves was investigated using physical model experiments and radiance simulations. Illuminance level and distribution uniformity were assessed for a working plane in a large space located in sub-tropical climate regions where innovative systems for daylighting and shading are required. It was found that the performance of the lightshelf can be improved by changing the ceiling geometry; the illuminance level increased in the rear of the room and decreased in the front near the window compared to rooms having conventional horizontal ceilings. Moreover, greater uniformity was achieved throughout the room as a result of reducing the difference in the illuminance level between the front and rear of the room. Radiance simulation results were found to be in good agreement with physical model data obtained under a clear sky and high solar radiation. The best ceiling shape was found to be one that is curved in the front and rear of the room.
Optimizing performance of the lightshelf by modifying ceiling geometry in highly luminous climates
Leistungsoptimierung von Einrichtungen zur Tageslichtlenkung durch Veränderung der Deckengeometrie in Gebieten mit hohem Lichteinfall
Freewan, A.A. (Autor:in) / Shao, L. (Autor:in) / Riffat, S. (Autor:in)
Solar Energy ; 82 ; 343-353
2008
11 Seiten, 11 Bilder, 1 Tabelle, 26 Quellen
Aufsatz (Zeitschrift)
Englisch
Arbeitsraum , Arbeitsumgebung , Beleuchtung , Beleuchtungsstärke , Blendung , Decke (Raum) , Experiment , experimentelles Ergebnis , Fenster (Gebäudebauteil) , geometrische Form , Helligkeit , Innenraum , Insolation , Komforteigenschaft , Leuchtdichteabnahme , Lichtausbreitung , Modell , Modelluntersuchung , natürliche Lichtquelle , Optimierung , optische Reflexion , Reflexionsvermögen , Simulationsmodell , Simulationsmodellbildung , Sonnenstrahlensammler , Sonnenstrahlung , Strahlverfolgung , Tageslicht , Theorie-Experiment-Vergleich , Zimmer
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