Evaluation of Natural Lighting in the Architecture of Educational Spaces in Temperate and Humid Districts with Emphasis on the Efficiency of Light Shelf

Document Type : Case Study

Authors

1 Ph.D. student, Department of Architectural Engineering, Sari Branch, Islamic Azad University, Sari, Iran

2 Assistant Professor, Department of Architectural Engineering, Sari Branch, Islamic Azad University, Sari, Iran

3 Assistant professor, Department of Architectural Engineering, sari branch, Islamic Azad university, sari, Iran

Abstract

School buildings are the second place where students spend most of their time after residential environments. Based on this, the use of natural light will lead to maintaining and improving health and creating visual comfort and sufficient lighting. The present study aims to evaluate the lighting in the classroom environment and create sufficient lighting after installing the light shelf in a moderate and humid climate in a proposed model. In the first step, the importance coefficient of the fields and the factors and variables effective in evaluating the brightness of the light shelf were identified. In the second step, the field information of schools in Mazandaran province, especially Sari city, has been collected. In the third step, six different models of the combined light shelf are proposed based on geometric and dimensional characteristics such as depth, height and angle of the light shelf. The results have shown that the combination of the external light shelf with the internal light shelf is suitable if the external light shelf with a depth of 120 cm is placed at a height of 1.80 meters from the floor and with a change in its geometric shape at a depth of 30 cm by -10 degrees failure to occur. analyzing the spatial adequacy indicators of daylight (sDA) also shows that 72% of the students have received lighting above 300 lux and its sDA is equal to 55.41%, which indicates the provision of sufficient lighting above 300 lux in the classroom.

Keywords


Abdulkareem, M., Al-Maiyah, S., & Cook, M. (2018).
Remodelling façade design for improving daylighting
and the thermal environment in Abuja’s low-income
housing. Renewable and Sustainable Energy Reviews,
82, 2820-2833.
Alemi, B., & Tafreshi, F. (2023). Studying the importance
of thermal control of walls and transparent walls
in hot and dry climate of Kashan.. Journal of Urban
Management and Energy Sustainability, 5(1), 92-103.
doi: 10.22034/jumes.2023.1988401.1115
Al-Khatatbeh, B. J., & Ma’bdeh, S. N. (2017). Improving
visual comfort and energy efficiency in existing
classrooms using passive daylighting techniques.
Energy Procedia, 136, 102-108.
Amini, M., Mahdavinejad, M., & Bemanian, M. (2019).
Future of interactive architecture in developing
countries: challenges and opportunities in case
of Tehran. Journal of Construction in Developing
Countries, 24(1), 163-184.
Bayram, G. (2015). A proposal for a retrofitting model
for educational buildings in terms of energey efficient
lighting criteria.
Berardi, U., & Anaraki, H. K. (2018). The benefits of
light shelves over the daylight illuminance in office
buildings in Toronto. Indoor and Built Environment,
27(2), 244-262.
Buratti, C., Belloni, E., Merli, F., & Ricciardi, P. (2018). A
new index combining thermal, acoustic, and visual
comfort of moderate environments in temperate
climates. Building and Environment, 139, 27-37.
Freidooni, F., Freidooni, S., & Gandomkar, A. (2022).
Climatic compatible future cities locating approach
to less non-renewable energy consumption. Journal
of Urban Management and Energy Sustainability, 4(2),
178-190. doi: 10.22034/jumes.2022.1982956.1101
Giannelli, D., León-Sánchez, C., & Agugiaro, G. (2022).
COMPARISON AND EVALUATION OF DIFFERENT GIS
SOFTWARE TOOLS TO ESTIMATE SOLAR IRRADIATION.
ISPRS Annals of the Photogrammetry, Remote Sensing
and Spatial Information Sciences, 4, 275-282.
Gim, S., Kim, Y., Lee, H., & Seo, J. (2014). A Study on Light-
Shelf System using Location-Awareness Technology for
Energy Saving in Residential Space. Korean Journal of
Air-Conditioning and Refrigeration Engineering, 26(6),
275-286.
Grobe, L. O., Gecit, B. H., Sevinç, Z., ALTINKAYA, G.,
Aksakarya, G., Ergin, M., & Kazanasmaz, T. (2018). Scalemodel
and simulation-based assessments for design
alternatives of daylight redirecting systems in a sidelighting
educational room. METU Journal of the Faculty
of Architecture, 34(2).
Hiranipour, Milad, Fayaz, Rima, & Mahdavinia, Mojtabi.
(2021). Optimizing window dimensions according
to light and heat factors in cold climate residential
buildings; Study case: Ilam city. Arman Shahr architecture
and urban planning, 14(35), 91-101.
Ibrahim, Y., Kershaw, T., & Shepherd, P. (2020).
Improvement of the Ladybug-tools microclimate
workflow: A verification study. Building Simulation and
Optimization.
Kontadakis, A., Tsangrassoulis, A., Doulos, L., & Topalis, F.
(2017). An active sunlight redirection system for daylight
enhancement beyond the perimeter zone. Building and
Environment, 113, 267-279.
Korsavi, S. S., Zomorodian, Z. S., & Tahsildoost, M. (2016).
Visual comfort assessment of daylit and sunlit areas: A
longitudinal field survey in classrooms in Kashan, Iran.
Energy and Buildings, 128, 305-318.
Kwon, S. H., Lee, H. W., & Kim, Y. S. (2014). Proposal of a
Light Shelf System Design According to the Separation
Distance between Window and Light Shelf Reflector.
Advanced Science and Technology Letters, 47, 1-5.
Lee, H., Kim, Y., Seo, J., & Kim, D. S. (2014). Simulation Study
on the Performance Evaluation of Light-shelf According
to Geometric Shape of Ceiling. Korean Journal of Air-
Conditioning and Refrigeration Engineering, 26(4), 181-
192.
Lee, Heangwoo, Suktae Kim, and Janghoo Seo.
(2018). “Evaluation of a Light Shelf Based on Energy
Consumption for Lighting and Air Conditioning.” Indoor
and Built Environment 27(10): 1405–14.
Lim, Y. W., & Ahmad, M. H. (2015). The effects of direct
sunlight on light shelf performance under tropical sky.
Indoor and Built Environment, 24(6), 788-802.
Mangkuto, R. A., Feradi, F., Putra, R. E., Atmodipoero, R. T.,
& Favero, F. (2018). Optimisation of daylight admission
based on modifications of light shelf design parameters.
Journal of Building Engineering, 18, 195-209.
Meresi, A. (2016). Evaluating daylight performance of
light shelves combined with external blinds in south-facing classrooms in Athens, Greece. Energy and
Buildings, 116, 190-205.
Ochoa, C. E., & Capeluto, I. G. (2006). Evaluating visual
comfort and performance of three natural lighting
systems for deep office buildings in highly luminous
climates. Building and environment, 41(8), 1128-1135.
Ricciardi, P., & Buratti, C. (2018). Environmental quality
of university classrooms: Subjective and objective
evaluation of the thermal, acoustic, and lighting comfort
conditions. Building and Environment, 127, 23-36.
Roudsari, M. S., Pak, M., & Smith, A. (2013, August).
Ladybug: a parametric environmental plugin
for grasshopper to help designers create an
environmentally-conscious design. In Proceedings of
the 13th international IBPSA conference held in Lyon,
France Aug (pp. 3128-3135).
Soler, A., & Oteiza, P. (1996). Dependence on solar
elevation of the performance of a light shelf as a
potential daylighting device. Renewable energy, 8(1-4),
198-201.
Vighnesh, R. (2021, May). Use of Parametric Software for
Selecting Building Materials Based on Embodied Energy.
In International Conference on Structural Engineering
and Construction Management (pp. 25-36). Springer,
Cham.