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Applicability of a Prismatic Panel to Optimize Window Size and Depth of a South-facing Room for a Better Daylight Performance. L&E 28 (4) 2020

Light & Engineering 28 (4)

Volume 28
Date of publication 08/15/2020
Pages 63–67

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Applicability of a Prismatic Panel to Optimize Window Size and Depth of a South-facing Room for a Better Daylight Performance. L&E 28 (4) 2020
Articles authors:
Busra Kose, Tuğçe Kazanasmaz

Busra Kose, MSc, Ph.D. candidate at Department of Architecture from Izmir Institute of Technology. She got her Master’s degree in June, 2019. She is interested in lighting design and energy efficiency in buildings

Tuğçe Kazanasmaz, Prof. Dr., held a Doctor of Philosophy in Building Science from Middle East Technical University (METU). She has 19 years academic experience in architectural lighting, building physics and energy efficient design. At present, she  is a Professor in the Department of Architecture in İzmir Institute of Technology, Turkey

This study examines the performance of attached prismatic panels, which have shading capability, in a side-lit deep plan room to find out the least possible WWR value in relation to room depth satisfying the required daylight availability. The methodology is based on simulating a base model in Relux and testing it with alternative models composed of incrementally defined WWR and room depth values. In accordance with minimum IES requirements, the most satisfying sDA value was found to be 48.54 % in a room of 12 m depth with 67 % WWR. An sDA of 51.59 % and 59.26 % was achieved in a room of 9m depth with 43 % WWR and 6m depth with 30 % WWR, respectively. The least ASE values were obtained with the least WWR alternative of 30 % in all room depths. This study presents a new approach with the consideration of innovative daylight redirecting systems to propose revisions for the requirements mentioned in standards about daylight in buildings but based on conventional fenestration systems.
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