Recent Trends in Solar Power DAYLIGHTING

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Recent Trends in Solar PowerDAYLIGHTING
6-7 Oct, ICORE-2009

• BY
• Prof. J. M. Patel, APME
• L.D.COLLEGE OF ENGINEERING, AHMEDABAD
• GUJARAT, INDIA

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WHAT MOTIVATES THE RESURGENT INTEREST IN
DAYLIGHTING?

• In commercial and public buildings 40 to 50
• of the energy consumption accounts for
• artificial light, and 10 to 20 of energy
• consumption in industry. (US Department of
  Energy, 2002)
• It has potential for energy conservation.
• The energy cost saving by a good daylighting
• design.
• Daylighting may also reduce heating and
• cooling costs for a building.
• Daylighting influences on the productivity and
• health benefits of the occupants.

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• Commercial, industries and public facilities
• such as school, libraries and hospitals can
• have a significantly reduction of artificial
• lightning, by using daylight.
• Daylighting in combination with energy
• efficient lighting reduces the energy
• consumption considerably.
• The lighting power density can be reduced by
• using daylight, in some office buildings from
• 23.7 W/m² to 9.5 W/m², without any reduction
• in the measured light levels.
• (US Department of Energy, 2002)

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SOLAR DAYLIGHTING SYSTEMS TECHNOLOGIES
Distribution of daylight
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LIGHTING SHELF
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THE LIGHT-GUIDING SHADE
window
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LASER CUT PANEL (LCP)
Array of LCP element redirecting light
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LIGHT PIPE FOR DAYLIGHT
Light pipe installation in 1st floor corridor at
Fraunhofer ISE. Sunlight is directed into the
pipe via a heliostat and two fixed mirrors.
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LIGHT PIPE INSTALLATION
Daylight is then conducted by the pipe's
prismatic foil through the corridor (left) and
directed into rooms lacking windows (right).
Images reproduced from Karlheinz Eder,1998
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THE LIGHT-COLLECTION CANOPY
REF- Demonstrating a cost-effective approach to
core daylighting by A. Rosemann, M.
Mossman, L. Whitehead. Solar Energy 82
(2008) pp.302310
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THE LIGHT-COLLECTION CANOPY
REF- Demonstrating a cost-effective approach to
core daylighting by A. Rosemann, M.
Mossman, L. Whitehead. Solar Energy 82
(2008) pp.302310
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VIEW OF A TYPICAL WORK SPACE ILLUMINATED BY
DAYLIGHT THROUGH WINDOW ONLY
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VIEW OF A TYPICAL WORKSPACE ILLUMINATED BY
DAYLIGHT THROUGH WITH DAYLIGHT FROM THE SOLAR
CANOPY SYSTEM
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HIMAWARI FIBER OPTIC DAYLIGHTING SYSTEM
REF-La Forêt Engineering Co.,Ltd. Himawari
means "a kind of holly-hock looking up toward the
Sun"
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REVOLUTIONARY NATURAL LIGHTING SYSTEM FOR RETAIL
AND OFFICE BUILDINGS
Optical Fibers
Solar Collector
Courtesy-Sunlight Direct, LLC, 913 View Harbour
Rd. Knoxville, TN 37922
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ICORE-2009 SESI, NEW DELHI
Thanks.. Lord SUN