Technological Review of Tubular Daylight Guide System from 1982 to 2020

Malet-Damour, Bruno; Bigot, Dimitri; Boyer, Harry

doi:10.24018/ejeng.2020.5.3.1809

Cited by 5 publications

(5 citation statements)

References 40 publications

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“…The collected daylight is then transmitted through a light guide (pipe or duct), fiber optics (glass or plastic), or scatters through the air via vertical voids e.g., atrium using lenses and mirrors to adjust the direction and divergence of the ray. Then, inside the construction core or served space, the light is diffused by using the distribution devices which use extra optical elements [66][67].…”

Section: Innovative Daylighting Systemsmentioning

confidence: 99%

A Review of the Evolution of Daylighting Applications and Systems Over Time for Green Buildings

Gaber

Abdelrahman

Aissa

et al. 2023

International Journal of Applied Energy Systems

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The continuous increase in the world's population and the fact that humans spend most of their day in indoor environments has increased the demand for energy. The rational consumption of electricity, especially lighting and its provision in buildings using various strategies, has become an important topic on the minds of many researchers and developers. In recent years, with the increasing the awareness of sustainable development due to economic and social conditions, daylight is seen as an effective way to save the energy, reduce significant pressures on existing energy infrastructure and reduce the environmental impact. The use of daylight in buildings by different sunlight applications/systems, whether traditional or innovative, is more than just an alternative or supplement to electric lighting, as it has many benefits in terms of economic, environmental, and health. Traditional applications are divided into three strategies: general, improving, and developing. The interior spaces of multi-story buildings (i.e., taller and deeper) are often not illuminated by natural light during the daytime, due to the distance from these spaces to the nearest traditional general application through which daylight must enter. Innovative Daylighting Systems (IDS) or remote source systems have been developed to transmit daylight into the building core (i.e., inaccessible places or rooms) and windowless areas or parts so they can be called Structure Core Daylighting Systems (SCDS). Eighteen SCDS/IDS were reviewed and discussed in the form of a comparison between them in terms of their components, historical progress, installation locations, and a brief description. The study focused on the systems that had already been commercialized or at least produced a large-scale prototype that had been installed in a real structure over the past five decades. Although SCDS/IDS are technically powerful enough to provide illumination for remote spaces, there are some important shortcomings that have hampered or prevented their widespread use, such as the extremely high-cost, efficiency for some of them, utilization difficulties, and application limitations. In addition, the equilibrium between the cost of their components and their performance efficiency is one of the great fundamental decisions that an engineer designing for these systems must make. Finally, the paper presents the latest design approaches that have been developed to overcome their identified shortcomings.

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Section: Innovative Daylighting Systemsmentioning

confidence: 99%

A Review of the Evolution of Daylighting Applications and Systems Over Time for Green Buildings

Gaber

Abdelrahman

Aissa

et al. 2023

International Journal of Applied Energy Systems

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“…A disponibilidade de luz natural em ambientes que fazem uso de tubos de luz natural é impactada pelos seus componentes principais (Figura 3), sendo eles o coletor (I), que capta a luz solar para o tubo de forma passiva ou ativa; o tubo (II), que conduz a luz solar por reflexões; o difusor (III), que por sua vez difunde a luz no ambiente interno (MALET-DAMOUR et al, 2019;MALET-DAMOUR et al, 2020). Desta forma, tomando por referência os diâmetros dos tubos disponibilizados no mercado, bem como as características do coletor e difusor, Tabela 3, foi definido o modelo de referência com sessão quadrada com as seguintes características: lado de 0,20m; coletor e difusor com vidro incolor plano de 4mm; refletância especular interna do tubo de 0.98.…”

Section: Modelos Para Simulaçõesunclassified

“…Os tubos de luz natural são dispositivos de captação e condução da luz solar por pequenas ou grandes distâncias e são utilizados na construção civil com vistas a uma melhor eficiência energética. Geralmente instalados em ambientes que recebem pouca ou nenhuma luz natural, estes dispositivos podem provocar impactos positivos tanto econômicos, quanto para a saúde e bem-estar dos usuários (MALET-DAMOUR et al, 2022;MALET-DAMOUR et al, 2020).…”

Section: Introductionunclassified

Análise da performance lumínica de tubos de luz natural em ambientes de cozinha

Laranja,

Santos

2023

Xvii Encontro Nacional De Conforto No Ambiente Construído

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Os tubos de luz natural proporcionam impactos positivos no ambiente interno com a melhora da performance lumínica. Estes podem vir a ser incorporados em conjuntos habitacionais como forma de suprir as necessidades de iluminação de ambientes de cozinha, os quais possuem grande demanda por iluminação. Desta forma, o objetivo desta pesquisa foi analisar a performance lumínica de tubos de luz natural em ambiente de cozinha, em Vitória – ES. Para isto, a metodologia dividiu-se em três etapas: definição de modelos de referência para tubo de luz natural e ambiente de cozinha; definição de dez modelos de tubos de luz natural aplicados a um modelo de cozinha; definição dos parâmetros para as simulações e das métricas ALNe e IULN. As simulações foram realizadas no software Troplux 8, no qual os modelos dividiram-se em três grupos de análise: Grupo 01 (sistema com tubo de 1,2m de comprimento, sem joelho e inclinações de 37°, 69° e 103°), Grupo 02 (sistema com tubo de 1,2m de comprimento, com joelho e inclinações de 37°, 69° e 103°) e Grupo 03 (sistema com tubo de 1,65m de comprimento, com joelho e inclinações de 0°, 39°, 69° e 101°). Os resultados demonstraram que a inclinação dos tubos de luz natural, exerceu maior influência na variação da iluminação no ambiente interno, do que o comprimento do tubo e a adição de joelhos, no qual modelos de menor inclinação (0°, 37° e 39°) obtiveram os piores resultados. Por outro lado, o aumento de 27,28% no comprimento do tubo causou um inexpressivo decaimento da iluminação natural. Constatou-se também que a adição de joelho, em tubos de luz natural de mesma inclinação, contribuiu com até 20% de melhora na performance lumínica do ambiente interno.

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“…However, excessive sun exposure can induce light pollution, overheating, and visual difficulties (Singh et al, 2013). According to research, a guiding structure that spreads to provide optimal lighting levels (Malet-Damour et al, 2020). So, if the quality can be changed so that the outcomes are pleasant for humans, we can reap the benefits of natural light (Wong, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Solatube is a tube sleeve that directs sunlight from a building's roof to an enclosed room where a light source is required. A study explains the implementation of a novel natural lighting approach (Malet-Damour et al, 2020). When compared to direct sunlight, employing Solatube lowers the excess of transmitted light.…”

Section: Introductionmentioning

confidence: 99%

Lighting System Optimisation Design using Solatube with GA-PID Controller

2023

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A Solatube is a daylight system that used to save electricity generated from nonrenewable energy sources. However, the amount of solar entering the room via the Solatube had not been controlled. The goal of the research is maintaining a more consistent light intensity of 350 Lux for 24 hours. The study attempts to create a lighting optimization system based on an experimental design based on a PID controller. The system consists of a microcontroller, a light sensor, some motors and drivers. The PID parameter is tune beginning with the Ziegler-Nichols method and optimizing it with the Genetic Algorithm (GA) approach. The GA approach produced the best results with a population of 50, a Kp value of 0.105210, a Ki of 0.052901, a Kd of 0.046443, and a tuning time of 94 seconds. The annual savings value of using electrical energy is 22.07%.

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Technological Review of Tubular Daylight Guide System from 1982 to 2020

Cited by 5 publications

References 40 publications

A Review of the Evolution of Daylighting Applications and Systems Over Time for Green Buildings

A Review of the Evolution of Daylighting Applications and Systems Over Time for Green Buildings

Análise da performance lumínica de tubos de luz natural em ambientes de cozinha

Lighting System Optimisation Design using Solatube with GA-PID Controller

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