Ray Tracing Method of Light through Rectangular Light Pipe with Bends

Taengchum, Thanyalak; Chirarattananon, Surapong

doi:10.1016/j.egypro.2015.11.568

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…In addition, MATLAB has been used to code the calculation, algorithms and is the easiest and most productive software environment for engineers and scientists. Taengchum and Chirarattananon 86 used MATLAB to calculate the daylight transmission efficiency of rectangular tubes. The deviation between the experiment and the calculation was approximately 1.5%.…”

Section: Evaluation Methods For the Performance And Energy-savings Fr...mentioning

confidence: 99%

Evaluation methods of the daylight performance and potential energy saving of tubular daylight guide systems: A review

Yuan

et al. 2021

Indoor and Built Environment

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In the past 30 years, tubular daylight guide systems (TDGSs) have become one of the most popular ways to transport outdoor natural light into the inner space in building design. However, tubular daylight guide systems are not widely used because of the lack of methods to evaluate methods on the suitability of the TDGSs. This study therefore summarizes the daylight performance metrics of TDGSs and presents the estimation methods in terms of field measurements, simulation and empirical formulae. This study focuses on the daylight performance and potential energy savings of TDGSs. Moreover, this study will be helpful for building designers to build healthy, comfortable and energy-saving indoor environment.

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Section: Evaluation Methods For the Performance And Energy-savings Fr...mentioning

confidence: 99%

Evaluation methods of the daylight performance and potential energy saving of tubular daylight guide systems: A review

Yuan

et al. 2021

Indoor and Built Environment

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“…Horizontal light duct, with a rectangle section, was used as a custom-made solution in studies addressing anidolic collector and laser cut panels [37,38], or in studies dealing with light extraction elements [125,16,38]. Evaluations of analytical models for straight and bent horizontal light pipes were done to compare the results with experimental measurements [126,127]. The result was that the luminous efficiency of the horizontal pipes is dependent on its orientation to solar azimuth variation during the day or the year [120] and for solar altitude [39].…”

Section: Horizontal Light Pipesmentioning

confidence: 99%

Daylight Transport Systems for Buildings at High Latitudes

Obradović

Matusiak

2019

Journal of Daylighting

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This paper is a literature study of daylight transport systems aiming at selecting the most appropriate ones for application at high latitudes. It is limited to the systems that transport light at a long distance from the façade and distribute it either in the building core or at a rear place in a room adjacent to the façade. The literature is spanning from the 80s' to the present. It covers the theoretical background and development of the systems from their infancy, through technical development of the design elements and to the adaptation of the systems to different climatic conditions. Since the most literature comes from equatorial and tropical climate, a short contextualization with high latitudes climate is included. Findings are systematized and presented in tables for easier comparison of efficiency, visual comfort, design efficacy, maintenance need, cost and/or availability on the market, and energy-saving potential in different climates. Conclusions confirm that the daylight condition at the location is the main prerequisite when deciding on the type of collector while the building structure and room functionality are the basis for choosing the type of the transport element. Finally, the distribution element showed to be the key factor when discussing applicability in a functional space where the final success depends on human acceptance. This paper can be useful to get an overview of performance characteristics and application preferences of different daylight transport systems or just their components in daylight conditions at high latitudes.

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“…This methodology is similar to the ones used for acoustic analysis [9]. The accuracy of the computer modelling has previously been verified [10]. In the image below, two subcases are presented simultaneously, one with a semispherical upper dome and another with a shallower upper dome in order to compare the manner in which light is reflected in each.…”

Section: Computer Implementationmentioning

confidence: 99%

Parameterizing the Geometry and Visualizing the Lighting Method of Byzantine Church Domes

Jabi

Potamianos

2016

Digital Heritage. Progress in Cultural Heritage: Documentation, Preservation, and Protection

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Abstract. This paper introduces a computer-based tool for the analysis of the geometry and the daylighting of Byzantine church domes to facilitate experimentation with a number of cases before any fieldwork is undertaken. Starting with a geometric derivation of the relationship between dome parameters, the digital tool builds an interactive three-dimensional model of a Byzantine church dome. The model allows the user to input the properties of the dome, the drum, any windows, and the slope of their sills. The model allows the user to define the dome using three different curvatures since such a case was identified in a Mistras church. A custom ray-tracing algorithm visualizes the path of light rays falling on the windowsills and their reflections within the dome. It was found that several parameters are interrelated and that an optimal set of proportions must be established to achieve the expected behavior of light within the dome.

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Ray Tracing Method of Light through Rectangular Light Pipe with Bends

Cited by 7 publications

References 9 publications

Evaluation methods of the daylight performance and potential energy saving of tubular daylight guide systems: A review

Evaluation methods of the daylight performance and potential energy saving of tubular daylight guide systems: A review

Daylight Transport Systems for Buildings at High Latitudes

Parameterizing the Geometry and Visualizing the Lighting Method of Byzantine Church Domes

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