OPTIMALISASI PENCAHAYAAN ALAMI GEDUNG PERPUSTAKAAN (STUDI KASUS: GEDUNG PERPUSTAKAAN UNIVERSITAS ISLAM NEGERI ALAUDDIN MAKASSAR)

Muh. Aryanugraha Ismajaya; Nurul Jamala B; Asniawaty

doi:10.24252/nature.v10i2a4

Muh. Aryanugraha Ismajaya Universitas Islam Negeri Alauddin Makassar
(ID)
Nurul Jamala B Departemen Arsitektur, Universitas Hasanuddin
(ID)
Asniawaty Departemen Arsitektur, Universitas Hasanuddin
(ID)

DOI: https://doi.org/10.24252/nature.v10i2a4

Keywords: natural lighting, library building, optimization, light shelf, energy efficiency, Ecotect

Abstract

This research aims to optimize natural lighting in the Alauddin Makassar State Islamic University Library building by enhancing the distribution of natural light. The study employs a quantitative method involving direct measurement of natural lighting using a lux meter on-site and the dissemination of questionnaires among library visitors. Field measurement data is processed using MS Office Excel to assess the lighting conditions. Additionally, the application of Autodesk Ecotect with the Desktop Radiance plugin is utilized to simulate field measurement outcomes. To optimize natural lighting, simulations are conducted using six different models of light shelves. The simulation results indicate that employing a light shelf positioned centrally with an external angled surface proves most effective in maximizing natural light entry into the building. On the second floor, a centrally positioned light shelf with a 15° angle on each outer window opening yields the highest R² value of 0.94. Meanwhile, on the third floor, using a centrally positioned light shelf with a 30° angle on the north side and 15° on the south side of the window achieves the highest R² value of 0.85.

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