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An Empirical Validation of Estimation Model (OptimLUM) for Energy Efficient Luminaire Layout Design in Offices L&E 28 (1) 2020

Light & Engineering 28 (1)

Volume 28
Date of publication 02/20/2020
Pages 70–78


An Empirical Validation of Estimation Model (OptimLUM) for Energy Efficient Luminaire Layout Design in Offices L&E 28 (1) 2020
Articles authors:
İlknur Erlalelitepe Uygun, Tuğçe Kazanasmaz, Serdar Kale

İlknur Erlalelitepe Uygun is Ph.D. student in Department of Architecture at Izmir Institute of Technology. She got her Master’s degree from same department in 2012. She is a research assistant in the Department of Architecture in İzmir Institute of Technology, Turkey since 2009. Her research topics are energy performance, architectural lighting and optimization

Tugce Kazanasmaz, Dr. of Philosophy in Building Science from Middle East Technical University (METU), Professor. She has 21 years academic experience in architectural lighting, building physics, and energy-efficient design. At present, she is a Professor in the Department of Architecture at Izmir Institute of Technology, Turkey

Serdar Kale, Prof. Dr., got his Master’s degree in Construction Project Management from HeriotWatt University, Edinburgh, UK, 1994. He held a Doctor of Philosophy in Civil Engineering from Illinois Institute of Technology, Chicago, USA. His research topics are construction management, technology and innovation management, and performance evaluation. At present, he is a Professor in the Department of Architecture in İzmir Institute of Technology, Turkey

This study performed with the purpose of constructing and validating a model named OptimLUM (Optimizing Luminaire Layouts) to estimate the most accurate location, number and type of artificial light sources according to average illuminance and maximum uniformity in an office. OptimLUM is appling through Excel Spreadsheet to develop the model and uses Evolver, which is basing on genetic algorithm to implement optimization routine. To validate the reliability of the proposed model, luminaire layout scenairos generated for two types of luminaires after taking illuminance measurements in an actual office. OptimLUM illuminance values were comparing statistically with measurement and DIALux results to test the applicability of the model. The model performance is highly accurate in determining luminaire positions: coefficient of determination R2 and coefficient of variation CV were equal to (86–99)% and to (0.04–0.12) respectively, and for all scenarios. Its outputs are closer to the actual measurements when compared with DIALux outputs.
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