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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 22, Iss. S1 — Jan. 13, 2014
  • pp: A132–A143

A sensor-less LED dimming system based on daylight harvesting with BIPV systems

Seunghwan Yoo, Jonghun Kim, Cheol-Yong Jang, and Hakgeun Jeong  »View Author Affiliations

Optics Express, Vol. 22, Issue S1, pp. A132-A143 (2014)

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Artificial lighting in office buildings typically requires 30% of the total energy consumption of the building, providing a substantial opportunity for energy savings. To reduce the energy consumed by indoor lighting, we propose a sensor-less light-emitting diode (LED) dimming system using daylight harvesting. In this study, we used light simulation software to quantify and visualize daylight, and analyzed the correlation between photovoltaic (PV) power generation and indoor illumination in an office with an integrated PV system. In addition, we calculated the distribution of daylight illumination into the office and dimming ratios for the individual control of LED lights. Also, we were able directly to use the electric power generated by PV system. As a result, power consumption for electric lighting was reduced by 40 – 70% depending on the season and the weather conditions. Thus, the dimming system proposed in this study can be used to control electric lighting to reduce energy use cost-effectively and simply.

© 2013 Optical Society of America

OCIS Codes
(040.5350) Detectors : Photovoltaic
(230.3670) Optical devices : Light-emitting diodes
(350.4600) Other areas of optics : Optical engineering
(220.2945) Optical design and fabrication : Illumination design

ToC Category:
Light-Emitting Diodes

Original Manuscript: October 22, 2013
Revised Manuscript: December 2, 2013
Manuscript Accepted: December 10, 2013
Published: December 16, 2013

Seunghwan Yoo, Jonghun Kim, Cheol-Yong Jang, and Hakgeun Jeong, "A sensor-less LED dimming system based on daylight harvesting with BIPV systems," Opt. Express 22, A132-A143 (2014)

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