Study on the influence of retroreflective materials on the “secondary reflection” on the room above the horizontal sunshade

Existing studies on horizontal sunshade systems mainly focus on the influence of the sunshade on the room under or inside the sunshade systems. Meanwhile, the top surface of horizontal sunshade, especially those with mirror surface or made of metal, reflects solar radiation into the indoor and surro...

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Main Authors: Chao Liu, Jian Tang
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2023-04-01
Series:Frontiers of Architectural Research
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S209526352200084X
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author Chao Liu
Jian Tang
author_facet Chao Liu
Jian Tang
author_sort Chao Liu
collection DOAJ
description Existing studies on horizontal sunshade systems mainly focus on the influence of the sunshade on the room under or inside the sunshade systems. Meanwhile, the top surface of horizontal sunshade, especially those with mirror surface or made of metal, reflects solar radiation into the indoor and surroundings, resulting in “secondary reflection”. This paper mainly focuses on the influence of secondary reflection on the room above the sunshade, using DesignBuilder software to conduct numerical simulation analysis and building architectural model for field measurement. Results from simulation and field measurement both prove that mirror materials increase secondary reflection reflected into the indoor. Moreover, results from experiments show that retroreflective materials decrease secondary reflection reflected into the indoor. At low latitude, the application of retroreflective materials on the top surface of horizontal sunshade effectively reduces the adverse influence of secondary reflection on the room above the sunshade.
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spelling doaj.art-64385c8da30649348de04905a7abc5882023-03-10T04:34:47ZengKeAi Communications Co., Ltd.Frontiers of Architectural Research2095-26352023-04-01122386393Study on the influence of retroreflective materials on the “secondary reflection” on the room above the horizontal sunshadeChao Liu0Jian Tang1Key Laboratory of Disaster Forecast and Control in Engineering (MOE), Jinan University, Guangzhou, ChinaKey Laboratory of Disaster Forecast and Control in Engineering (MOE), Jinan University, Guangzhou, China; Guangdong University of Finance & Economics, Guangzhou, China; Corresponding author.Existing studies on horizontal sunshade systems mainly focus on the influence of the sunshade on the room under or inside the sunshade systems. Meanwhile, the top surface of horizontal sunshade, especially those with mirror surface or made of metal, reflects solar radiation into the indoor and surroundings, resulting in “secondary reflection”. This paper mainly focuses on the influence of secondary reflection on the room above the sunshade, using DesignBuilder software to conduct numerical simulation analysis and building architectural model for field measurement. Results from simulation and field measurement both prove that mirror materials increase secondary reflection reflected into the indoor. Moreover, results from experiments show that retroreflective materials decrease secondary reflection reflected into the indoor. At low latitude, the application of retroreflective materials on the top surface of horizontal sunshade effectively reduces the adverse influence of secondary reflection on the room above the sunshade.http://www.sciencedirect.com/science/article/pii/S209526352200084XRetroreflective material useHorizontal sunshadeSecondary reflection
spellingShingle Chao Liu
Jian Tang
Study on the influence of retroreflective materials on the “secondary reflection” on the room above the horizontal sunshade
Frontiers of Architectural Research
Retroreflective material use
Horizontal sunshade
Secondary reflection
title Study on the influence of retroreflective materials on the “secondary reflection” on the room above the horizontal sunshade
title_full Study on the influence of retroreflective materials on the “secondary reflection” on the room above the horizontal sunshade
title_fullStr Study on the influence of retroreflective materials on the “secondary reflection” on the room above the horizontal sunshade
title_full_unstemmed Study on the influence of retroreflective materials on the “secondary reflection” on the room above the horizontal sunshade
title_short Study on the influence of retroreflective materials on the “secondary reflection” on the room above the horizontal sunshade
title_sort study on the influence of retroreflective materials on the secondary reflection on the room above the horizontal sunshade
topic Retroreflective material use
Horizontal sunshade
Secondary reflection
url http://www.sciencedirect.com/science/article/pii/S209526352200084X
work_keys_str_mv AT chaoliu studyontheinfluenceofretroreflectivematerialsonthesecondaryreflectionontheroomabovethehorizontalsunshade
AT jiantang studyontheinfluenceofretroreflectivematerialsonthesecondaryreflectionontheroomabovethehorizontalsunshade