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Dr Arman Hashemi Research Paper Award

Dr Arman Hashemi Research Paper Award

Premier Award Winner 2015
Daylighting and Solar Shading Performances of an Innovative Automated Reflective Louvre System

Research Abstract

Published in Energy and Buildings, Vol. 82; pp.607-620, 2014


Traditional windows, as the major source of daylight, have a common problem which is uneven distribution of daylight in the room. Several innovative daylighting systems such as: light shelves, fixed and movable reflective louvres, reflective sills, and prismatic glazing, have been developed to address this problem. This paper reports on a research programme that investigates retrofitted solutions to uneven distribution of daylight in deep-plan office buildings. 


The work presented follows initial investigations into the design and applicability of an automated retrofitted panel thermal shutters which can also act as a sunshade and daylighting system. The system has a patented function which allows each shutter/louvre to be controlled and placed separately from other louvres. 


This study evaluates the effectiveness of the system when acting as a sunshade, light shelf, reflective louvre, and reflective sill under clear, overcast, and sunny sky conditions. According to the results, the system significantly improved daylight distribution and reduced the need for artificial lighting by 60%. 

Winner's Bios

Dr Arman Hashemi

University of Brighton, UK

Arman is a Senior Lecturer in Architectural Technology at University of Brighton. Prior to this, he was a Postdoctoral Research Associate at University of Cambridge. He has worked on a range of award-winning architectural projects and led or contributed to several research projects on sustainable housing, building performance evaluation/simulation, offsite construction and product design and development. Arman has also received the Highly Commended Awards of the CIOB International Innovation and Research Awards 2015 in the Innovation Achiever’s Award category. Arman graduated from University of Tehran in 2002 with an MSc in architecture and completed his PhD at Cardiff University in 2009. 


Judge's comments

“This paper is well written with a good logical structure. The new louvre system is innovative and is clearly introduced in the paper with appropriate illustrations. The integration of physical testing with computer simulations provides good evidence in support of the proposed louvre system. The advantages of the system over conventional approaches are also well analysed. The paper provides a significant contribution to current knowledge relating to retrofitted solutions for daylight distribution in office buildings.”