G.Schlegel et al. have taken things still further at capturing energy from the sun. By simultaneously using the visible spectrum of sunlight for lighting purposes, and using the infrared (invisible) component of sunlight to fuel thermo-photovoltaic cells, his team has gained even more from the single solar-tracking collector. The extra complexity pushes the boundaries of the experimentation aspect of my research, but begs further consideration in my research report.
In Schlegel's research, an advanced simulator was used to measure the efficacy of the combined system. The simulator used, nick-named TRNSYS, exists at the Oakridge National Laboratory in Tennessee, USA. Findings from this research led to conclusions that cost per kwh of electricity played a large part in determining which climate generated the best rate of return for the investment in hybrid solar lighting. In 2003, the highest cost of electricity in the study occurred in Hawaii, where rates came in at $0.165/ kWh. By way of comparison, BC Hydro charges us $0.591/kWh for the first 1398 kWh, and $0.827/kWh after that. Clearly rates for electricity have gone up and the case for alternate sources of lighting and electricity improves!
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Solar Tracker Circuit
Plexiglass Mirror Almost Worked
Powerful Mini DC Gear Motor Setup
Photon Slide by Tony B.
G.O. Schlegel et al. / Solar Energy 76 (2004) 359–368
Evaluation of Hybrid Solar Lighting for Residential Applications in South Central British Columbia, Canada.
WELCOME!
Hybrid Solar Lighting, def'n: A roof-mounted solar concentrating device used to focus sunlight for transmission via fibre optic cables to rooms where natural lighting is desired. The word 'hybrid' comes from the secondary light source that kicks in when light levels from the sun are insufficient - ie. on cloudy days or at night.
Original Home Design w/ HSL Lighting to Basement
* Although an open-plan design furnishes adequate natural lighting to the above ground floors, the basement wants for a natural, central light source. HSL provides the solution.
Solar Tracker Circuit
Plexiglass Mirror Almost Worked
Powerful Mini DC Gear Motor Setup
Bringing Sunlight In
Photon Slide by Tony B.
The Real Deal
G.O. Schlegel et al. / Solar Energy 76 (2004) 359–368
Academic References:
- British Columbia Building Code (2006), Queen's Printer of British Columbia, British Columbia, Canada
- Duffie, J.A., Beckman, W.A., 1991. Solar Engineering of Thermal Processes, second ed., John Wiley and Sons.
- Edwards, L., Torcellini, P. (2002). A Literature Review of the Effects of Natural Light on Building Occupants. Retrieved Jan 29th, 2010 from U.S. DOE, Office of Scientific and Technical Information website: http://www.nrel.gov/docs/fy02osti/30769.pdf
- Ewing, Rex A. (2006) Power with nature : alternative energy solutions for homeowners. (2nd ed.). PixyJack Press.
- Feuermann, D., Gordon, J.M., Huleihil, M., (2002), Light Leakage in Optical Fibres: Experimental Results, Modeling, and the Consequences for Solar Concentrators, Solar Energy 72, 195-204.
- Ghisi, E., Tinker, J.A., (2005). Evaluating the Potential for Energy Savings on Lighting by Integrating Fibre Optics in Buildings. Building and Environment. Retrieved Jan. 23rd, 2010 from ScienceDirect database.
- Illuminating Engineering Society of North America (IESNA), (2000). The IESNA Lighting Handbook: Reference andApplication. Illuminating Engineering Society of North America, New York, NY.
- Kandilli, C., Ulgen, K. (2007). Review and Modelling the Systems of Transmission Concentrated Solar Energy Via Optical Fibres. Renewable and Sustainable Energy Reviews. Retrieved January 23rd, 2010 from ScienceDirect database.
- Muhs, J. et al., (2007) Hybrid Solar Lighting Systems and Components, United States Patent No. 7,231,128 B2, Retrieved March 12th, 2010 from U.S. Patents Office website: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=4&f=G&l=50&co1=AND&d=PTXT&s1=hybrid.TI.&s2=solar.TI.&OS=TTL/hybrid+AND+TTL/solar&RS=TTL/hybrid+AND+TTL/solar
- Schlegel, G.et al, (2003). Analysis of a Full Spectrum Hybrid Lighting System. M.S. Thesis, Solar Energy Laboratory, University of Wisconsin-Madison, USA. Retrieved Jan. 23rd , 2010 from ScienceDirect database.
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- Bolt-On Light Power!
- Hi! I'm a 2nd Year Architectural & Engineering Technology student at Thompson Rivers University in Kamloops, B.C., Canada.
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