Experimental Investigation of Light Shelf System Performance to Improve the Quality of Natural Light Indoors in Guilan

Document Type : Original Article

Authors

1 Mohsen Roshan, Assistant Professor, Faculty of Architecture, Islamic Azad University of Lahijan, Iran

2 Farzin Saadat, Master of Science, Faculty of Architecture, Islamic Azad University of Lahijan, Iran

Abstract

The growing need for energy in all dimensions, especially in residential and office use, has made the need to use renewable energy sources a vital issue. It is generally assumed that Light Shelf is a useful tool for daylight utilization. Therefore, most green buildings benefit from this technology without a realistic assessment. The purpose of this study is to objectively investigate the ability of Light Shelf to improve daylight as well as visual comfort by experimental research in Guilan. In this experimental study, the Scale Model on 1:5 scale was built and investigated the effects of a Light Shelf system that uses different illumination (light intensity) interiors with outside amount of light while resizing the interior and exterior Light Shelf size. The data were analyzed statistically and the performance of Light Shelf in different ways was analyzed. The results show that in 73% times, the Light Shelf can increase daylight in the depth. Contrary to the notion that the use of optical light could reduce the intensity of light and subsequently reduce grey near the window, it was found that the use of this system could only 43% reduce the intensity of light and grey near the window.

Keywords

References

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Journal of Renewable and New Energy
Volume 7, Issue 2 - Serial Number 14
September 2020
Pages 46-57

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History

  • Receive Date: 04 September 2019
  • Revise Date: 08 November 2019
  • Accept Date: 11 November 2019

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