Experimental Study on the Influence of Daylighting Performance of Solar Light Pipes by Dusts and Condensation

Article Preview

Abstract:

Dusts and condensation which exist in the application of solar light pipes can affect daylighting performance. The influence of daylighting performance of solar light pipes by dusts and condensation was studied in this paper. Through measuring daylighting performance of skylight dome on different condensation conditions, it was proved that as the drop’s mean diameter from small to big, the transmitting efficiency is directly proportional to the drop’s mean diameter, and then is inversely proportional to a certain value. Through measuring the overall daylighting performance of solar light pipes on three different conditions—clean, dusts and condensation on sunny and cloudy days, the illuminance flux was obtained. The experimental results indicated that dusts and condensation worsen the daylighting performance of solar light pipes, and dusts had bigger influences than condensation.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 374-377)

Pages:

1096-1099

Citation:

Online since:

October 2011

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Danny H.W. Li, Ernest K.W. Tsang, K.L. Cheung, C.O. Tam. An analysis of light-pipe system via full-scale measurements. Applied Energy, 87 (2010), pp.799-805.

DOI: 10.1016/j.apenergy.2009.09.008

Google Scholar

[2] Li Shao, S. B. Riffat, W Hicks, et al. A study of performance of light pipes under cloudy and sunny conditions in the UK. Right Light 4, Denmark, 1, 1997, pp.155-158.

Google Scholar

[3] David Jenkins, Tariq Muneer. Modeling light-pipe performances—a natural daylighting solution. Building and Environment, 38 (2003), pp.965-972.

DOI: 10.1016/s0360-1323(03)00061-1

Google Scholar

[4] Yanpeng Wu, Wenming Zhang, Chongfang Ma, et al. Photo catalytic degradation of formaldehyde by diffuser of solar light pipe coated with nanometer titanium dioxide thin films. Science China-Technological Sciences, (1) 53 (2010), pp.150-154.

DOI: 10.1007/s11431-009-0412-x

Google Scholar

[5] Yanpeng Wu, Chongfang Ma. Experimental research on daylighting performance of side light pipes. Journal of Chongqing University-Eng. Ed, 2(2003), pp.96-99.

Google Scholar