[ Apport de l’éclairage naturel par tube solaire dans une pièce aveugle ]
Volume 45, Issue 1, March 2025, Pages 270–278
Sibiath O. G. OSSENI1, Didier Berléo M. APOVO2, Zoulkifirou Sambo Mama3, Alida Kpoviessi4, and Aristide C. Houngan5
1 National University of Sciences, Technologies, Engineering and Mathematics of Abomey, Benin
2 National University of Sciences, Technologies, Engineering and Mathematics of Abomey, Benin
3 Laboratory of Applied Energetic and Mechanic (LEMA), Polytechnic School of Abomey-Calavi (EPAC), University of Abomey-Calavi - UAC), 01 POB: 2009 Cotonou, Benin
4 Laboratory of Applied Energetic and Mechanic (LEMA), Polytechnic School of Abomey-Calavi (EPAC), University of Abomey-Calavi - UAC), 01 POB: 2009 Cotonou, Benin
5 Laboratory of Sciences, Engineering and Mathematics, National School of Energy and Process Engineering, National University of Sciences, Technologies, Engineering and Mathematics of Abomey, Abomey, POB 486 Abomey, Sogbo-Aliho, Benin
Original language: French
Copyright © 2025 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Visual comfort refers to the lighting conditions to ensure optimal clarity inside a building (office, classrooms, homes, etc.). Good natural lighting helps create a comfortable indoor atmosphere and also reduces the building’s energy consumption. However, modern architecture focuses on the aesthetic aspect of lighting in the building to the detriment of its energy performance. The objective of this study is to propose a skylight system in a so-called «blind» room in order to reduce daytime energy consumption. For this, a bibliographic study was carried out on the concepts of lighting and visual comfort in order to retain solar tubes for their ease of implementation. The lighting, both indoor and outdoor, is simulated with and without skylights in the DIALux evo 10.1 software. The simulation results of this study revealed that the building could have better visual comfort and sufficient illumination, equivalent to at least 300 lux, according to the NF EN 12464-1 standard, with daylight by integrating a solar tube. A prototype skylight was made of cardboard and validated the simulation results giving an average illumination of 490 lux for a FLJ = 1.13%. We then note a reduction in energy consumption of 108 kWh/year corresponding to a financial saving of 21,600 FCFA/year and 77.76 kgCO2eq avoided each year, for this room only.
Author Keywords: natural lighting, visual comfort, solar tube, digital simulation, energy consumption.
Volume 45, Issue 1, March 2025, Pages 270–278
Sibiath O. G. OSSENI1, Didier Berléo M. APOVO2, Zoulkifirou Sambo Mama3, Alida Kpoviessi4, and Aristide C. Houngan5
1 National University of Sciences, Technologies, Engineering and Mathematics of Abomey, Benin
2 National University of Sciences, Technologies, Engineering and Mathematics of Abomey, Benin
3 Laboratory of Applied Energetic and Mechanic (LEMA), Polytechnic School of Abomey-Calavi (EPAC), University of Abomey-Calavi - UAC), 01 POB: 2009 Cotonou, Benin
4 Laboratory of Applied Energetic and Mechanic (LEMA), Polytechnic School of Abomey-Calavi (EPAC), University of Abomey-Calavi - UAC), 01 POB: 2009 Cotonou, Benin
5 Laboratory of Sciences, Engineering and Mathematics, National School of Energy and Process Engineering, National University of Sciences, Technologies, Engineering and Mathematics of Abomey, Abomey, POB 486 Abomey, Sogbo-Aliho, Benin
Original language: French
Copyright © 2025 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Visual comfort refers to the lighting conditions to ensure optimal clarity inside a building (office, classrooms, homes, etc.). Good natural lighting helps create a comfortable indoor atmosphere and also reduces the building’s energy consumption. However, modern architecture focuses on the aesthetic aspect of lighting in the building to the detriment of its energy performance. The objective of this study is to propose a skylight system in a so-called «blind» room in order to reduce daytime energy consumption. For this, a bibliographic study was carried out on the concepts of lighting and visual comfort in order to retain solar tubes for their ease of implementation. The lighting, both indoor and outdoor, is simulated with and without skylights in the DIALux evo 10.1 software. The simulation results of this study revealed that the building could have better visual comfort and sufficient illumination, equivalent to at least 300 lux, according to the NF EN 12464-1 standard, with daylight by integrating a solar tube. A prototype skylight was made of cardboard and validated the simulation results giving an average illumination of 490 lux for a FLJ = 1.13%. We then note a reduction in energy consumption of 108 kWh/year corresponding to a financial saving of 21,600 FCFA/year and 77.76 kgCO2eq avoided each year, for this room only.
Author Keywords: natural lighting, visual comfort, solar tube, digital simulation, energy consumption.
Abstract: (french)
Le confort visuel fait référence aux conditions d’éclairage pour assurer une clarté optimale à l’intérieur d’un bâtiment (bureau, salles de classe, maisons,...). Un bon éclairage naturel permet de créer une atmosphère intérieure confortable et de réduire également la consommation énergétique du bâtiment. Cependant, l’architecture moderne se focalise sur l’aspect esthétique de l’éclairage dans le bâtiment au détriment de sa performance énergétique. L’objectif de la présente étude est de proposer un système de puits de lumière dans une salle dite « aveugle » afin de réduire la consommation d’énergie diurne. Pour cela, une étude bibliographique a été faite sur les notions d’éclairage et de confort visuel afin de retenir les tubes solaires pour leur facilité de mise en œuvre. L’éclairement, intérieur comme extérieur, est simulé avec et sans puits de lumière dans le logiciel de DIALux evo 10.1. Les résultats de simulation de cette étude ont révélé que le bâtiment pourrait présenter un meilleur confort visuel et un éclairement suffisant, équivalent à 300 lux au minimum, selon la norme NF EN 12464-1, avec la lumière du jour par l’intégration d’un tube solaire. Un prototype de puits de lumière a été réalisé en carton et a permis de valider les résultats de simulation donnant un éclairement moyen de 490 lux pour un FLJ = 1,13%. On note alors une réduction de la consommation énergétique de 108 kWh/an correspondant à une économie financière de 21 600 FCFA/an et 77,76 kgCO2eq évité chaque année, pour ce local seul.
Author Keywords: éclairage naturel, confort visuel, tube solaire, simulation numérique, consommation énergétique.
How to Cite this Article
Sibiath O. G. OSSENI, Didier Berléo M. APOVO, Zoulkifirou Sambo Mama, Alida Kpoviessi, and Aristide C. Houngan, “Supply of natural lighting by solar tube in a blind room,” International Journal of Innovation and Applied Studies, vol. 45, no. 1, pp. 270–278, March 2025.
