A Novel Approach to Multi-Apertures and Multi-Aspects Ratio Light Pipe

Abstract

Daylightophil architecture concept is one of the most significant ways to reduce the electrical load consumption in building sector. In deep-plan buildings, or windowless buildings, advanced light transmission systems are used to compensate lighting demands in highperformance architecture theory. The manuscript is to challenge recent innovations in the light transmission systems, the choice of their type should be commensurate with the architectural design, space performance, and design requirements. Light pipes collect sunlight from the outdoor and transmit in the indoor for illumination. This paper presents analysis of daylight simulation of a novel vertical light pipe, which is embedded in an office building to transmit the light in three room, simultaneously. The light pipe (M-type) has two side apertures and one base aperture (multi-apertures) with different diameters (multi-aspect ratio). To analyze this novel vertical light pipe, a comparison was made with a conventional light pipe (S-type) with side-apertures. First, ray-tracing simulations were performed to investigate the penetration of light beams between the two light pipes. In comparison of level of illuminance between two types of light pipes, the efficiencies were evaluated. Daylight simulations were performed continuously throughout the year during daylight hours; in fact, fixed simulation makes it possible to analyze the effect of the sun altitude angle and the azimuth on the level of illuminance and output light beams direction to the spaces. Also, to investigate the effect of altitude and azimuth angles on the efficiency of the pipe (Mtype) and the direction of light output from the side apertures, altitude and azimuths were selected to simulate the design for providing symmetric sunlight on both sides of the building.

To Reduce the Annoying Light with Microalgae Window

“…It should be a suitable alternative and adapt to climatic and functional changes in a flexible way, and based on this, the building shell becomes more efficient and dynamic. The research results confirms the current researches by the main pilars of the literature (Talaei M. et al, 2017;Talaei M. et al, 2019;Talaei M. et al, 2021;Talaei M. et al, 2022;Arbab M. et al, 2020;Bazazzadeh H. et al, 2021;Ganji Kheybari A. et al, 2015;Goharian A. et al, 2020;Goharian A. et al, 2021;Pilechiha P. et al, 2020;Saadatjoo P. et al, 2021;Yazhari Kermani A. et al, 2018).…”

“…et al, 2009;Elrayies GM., 2018;IEA., 2012;Kumar K. et al, 2011;Malik A. et al, 2016;Cervera Sardá R. et al, 2016;Schipper, L. et al, 1984;Umdu ES. et al, 2018;Wolkers H. et al, 2011;Talaei M. et al, 2020;Talaei M. et al, 2017;Talaei M. et al, 2019;Talaei M. et al, 2021;Talaei M. et al, 2022;Arbab M. et al, 2020;Bazazzadeh H. et al, 2021;Ganji Kheybari A. et al, 2015;Goharian A. et al, 2020;Goharian A. et al, 2021;Pilechiha P. et al, 2020;Saadatjoo P. et al, 2021;Yazhari Kermani A. et al, 2018) that shows the importance of the issue. Architectural design methods are constantly changing and architects have always sought to introduce design techniques based on information technology, advanced materials and also environmentally friendly, which causes a change in the design process of architects from emphasizing form to function.…”

Conditions for Implementing Windowless Offices in High-Density Urban Centers of Malaysia: A Bibliometric and Systematic Review

“…In practice, Goharian and Mahdavinejad (2020) note that deepplan buildings, or windowless offices, require advanced light transmission systems to compensate for lighting demands for effective performance. Interestingly, technological advancements in lighting, ventilation, and air conditioning are also rapidly providing supportive solutions to physical openings in institutional buildings, resulting in the planning and design of windowless offices.…”

Drying of tomato pomace in daylight simulated photovoltaic‐assisted drying system: Effects of daylight intensity and application mode

“…Tubular daylight systems contribute to the reduction of electricity consumption by utilizing daylight from the sun, which is a renewable energy source, instead of electrical energy consumption. They can efficiently carry daylight to indoor environments (Balabel et al, 2022;Goharian & Mahdavinejad, 2020). These systems consist of three elements; a collector that follows the path of the sun or directs the light into the tube to recover as much light as possible; a tube that carries the light to the area to be illuminated by a transport technique depending on the optical properties of its material (lenses, reflective tube, prismatic tube, and solid core system); it may contain bends that naturally affect the performance of some pipes), a diffuser that transfers the light into the room to be illuminated at the tube exit (Baroncini, Boccia, Chella, & Zazzini, 2010;Carter, 2002;Malet-Damour et al, 2020;Wu, Jin, Li, Zhang, & Ma, 2009;Zhang, Muneer, & Kubie, 2002).…”