analysis of daylight performance of solar light pipes, Experimental Investigation on Light-Thermal Effects of ...

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Daylight Performance of Top Lighting Light Pipes and …

Solar altitude is the main reason to give an effect on the performance of light pipes. The light pipe with “Snow type” diffuser has better performance compare with the “Diamond type” one. The illuminance generated by light pipes could give better luminous environment for office, showroom, assembly room, and reception room in China.

Solar Light Pipe simulation for option 1 method in LEED …

May 08, 2018· I have not gotten results from light tubes that are close to their actual performance when modeling it as a tube with high reluctance. You can only have up to five bounces (double IES LM 83 for specific modeling parameters) and that has them performing well below what they actually do.

Analysis of the experimental performance of light pipes ...

Request PDF | Analysis of the experimental performance of light pipes | Light pipes can provide daylight and improve lighting conditions in buildings. Knowledge of their optical performance is a ...

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Experimental Investigation on Light-Thermal Effects of ...

Abstract: Experimental investigation was carried out on light-thermal effects of solar light pipes used in gymnasium of USTB under sunny conditions in Beijing. Experimental results showed that maximum of average luminance on the work plane generated by solar light pipes would achieve 300lx. People in the past on the solar light pipes studies mainly concentrated on its performance, and its ...

Advanced optical daylighting systems: light shelves and ...

May 01, 1996· OSTI.GOV Technical Report: Advanced optical daylighting systems: light shelves and light pipes

Experimental Investigation of Top Lighting and Side ...

The performance of two top lighting solar light pipes and one side lighting solar light pipe were investigated at the same time under sunny conditions in winter in Beijing.

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Daylight Performance of Top Lighting Light Pipes and …

G.Oakley,S.B. Riffat and L.Shao 2000,Daylight performance of light pipes. Solar Energy, 69, pp.89-98. Armando C.Oliveira 2001 ,Experimental and numerical analysis of natur al ventilation with combined light/vent pipes.Applied Thermal Engineering, pp.1925-36.

Experimental Study on Performance of Top Lighting Solar ...

The lighting performance of top lighting solar light pipe in the meeting room in winter in Beijing has been measured under sunny and cloudy conditions to analyze whether the top solar light pipe can satisfy the general jobs lighting or not. The results showed that the indoor maximum and minimum illuminance were 163.2 lux and 115.4 lux respectively and the average illuminance was 147.8 lux in ...

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Light Pipes Performance Prediction: inter model and ...

Bruno Malet-Damour, Harry Boyer, Ali Hamada Fakra, Milorad Bojic. Light Pipes Performance Pre-diction: inter model and experimental confrontation on vertical circular light-guides. Energy Procedia, Elsevier, 2014, 2013 ISES Solar World Congress, 57, pp.1977 - 1986. ￿10.1016/j.egypro.2014.10.062￿. ￿hal-01101841￿

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Color-Rendering of Daylight from Water-Filled Light Pipes

Several proposals have been made, however, for collecting daylight outside a building and directing or piping it to the interior or core spaces far removed from the perimeter areas [6].Water-filled light pipes have been proposed for transporting solar direct-beam illumination from concentrating collectors to the cores of habitable spaces [7].

Taking Daylight to the Next Level: How Daylighting ...

May 14, 2015· Later analysis focused on the quality of daylight in the main living areas, where good daylight is most important, and allowed me to quickly test …

A design guide for performance assessment of solar light-pipes

Jun 01, 2002· Two models, one for straight light-pipes and the other for elbowed light-pipes are described. The models enable estimation of daylight provision of the light-pipes with a high degree of accuracy i.e., R 2 values of 0.95 and 0.97 for regression between predicted and measured illuminance were respectively obtained for the above models.

Daylight and energy performances of a new type of light pipe

The rear of the light pipe was 0.60 m in width. Aperture, an external planar closing element that collect, redirect sunlight in order to optimize the direction of the incoming solar rays as the ...

Analysis of the experimental performance of light pipes ...

Light pipes can provide daylight and improve lighting conditions in buildings. Knowledge of their optical performance is a prerequisite for their successful integration into buildings. This article presents and analyses the experimental performance and the specific efficiency characteristics of a light pipe as integrated into an experimental ...

A design guide for performance assessment of solar light-pipes

T.D.G.S., "Tubular Daylight Guidance Systems", are natural lighting processes based on the transport of light. In 1990, they were judged by Littlefair as the most innovative technology in ...

Analysis of the experimental performance of light pipes ...

Sep 15, 2017· Later, in 2003, Jenkins and Muneer proposed a semi-empirical prediction method for the calculation of light pipe performance under overcast sky conditions . P.J. Carter in 2002 described a number of predictive methods for the performance of light pipes, based on real applications. The measuring of the luminous intensity of a light pipe enabled ...

Light Pipes and Daylighting Can Distribute Sunlight in a ...

Jun 22, 2010· Solar light pipes are more amenable to heat insulation than skylights and conventional windows. Their flexibility allows them to be used in inner rooms which have no common walls with the exterior of a building. Natural daily light exposure is enhanced by light pipes and can thus be of great use to people affected by seasonal affective disorders.

SUPERLITE2.0. Daylighting and Electric Lighting Analysis ...

Mar 01, 1995· @article{osti_56346, title = {SUPERLITE2.0. Daylighting and Electric Lighting Analysis for Complex Spaces}, author = {Modest, M and Kim, J J and Hitchcock, R and Osterhaus, W}, abstractNote = {SUPERLITE is a powerful lighting analysis program designed to accurately predict interior illuminance in complex building spaces due to daylight and electric lighting systems.

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Shelves and Light Pipes Advanced Optical Daylighting ...

Figure 3—Section of trapezoidal light pipe design (Light Pipe C). pare the daylight performance of the light shelf designs, a base case light shelf (Figure 2) was defined as a 1.4 m (3.8 ft) horizontal, white matte surface located at a height of 2.4 m (8 ft) above the floor. Light Pipes The light pipe was designed to fit within the ceiling

Analysis of daylight performance of solar light pipes ...

The solar light pipes in buildings realize the lightening use of solar energy by taking full advantage of natural daylight which is encouraging by Chinese government these years.

Sun Tunnels | Sun Pipes | Natural Daylight | Solarspot

Bring more natural daylight into your home with the Solarspot sun tunnel. Solarspot sun tunnels capture the daylight from outdoors and transfer it directly into your home, filling the space with brilliant natural light. The Solarspot sun tunnel brings in at least 70% more light than all other light tubes (of a similar diameter) on the market.. Also known as sun tubes and sun pipes, the ...

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Analysis of daylight performance of solar light pipes ...

From the measuring results of the illuminance on the work plane of the gymnasium, the improvement sunlight captures have better effects with the size of augmenting and the machining of the internal surface at the same time, so that the refraction increased and the efficiency of solar light pipes …

Title: Daylighting performance of tubular solar light ...

A general daylighting performance model, namely DPF model, for light pipes was developed and validated. The model enables estimation of daylight provision of the light pipes with a high degree of accuracy, i. e. R2 values of 0.95 and 0.97 for regression between predicted and measured illuminance were respectively obtained for the above model.

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