Presentation on theme: "Diogo Ferreira Bar Eshkol Shani Beracha. Introduction- The situation Nowadays Use of artificial light Ending resource Lighting 9% Pic.1-electricity usage."— Presentation transcript:
Optical fibers Advantages Works for every room Optical fibers are small Long lifetime Disadvantages Price Moving the parabolic mirror
Conclusion One-time expense. Pays off after 1-2 years. Reduces the electricity usage. Creates a well lit house.
Thank you for your prompt attention! Have a sunny day!
Window Width Room Depth Solar altitude Shelf Thickness 6 ft/1.83 m 8 ft/2.44 m 20 deg 5/13 cm 5 ft/1.52 m 10 ft/3.05 m 35 deg 4/10 cm 4 ft/1,22 m 12 ft/3.66 m 50 deg 3/8 cm 3 ft/91 cm 14 ft/4.27 m 65 deg 2/5 cm 2 ft/61 cm 16 ft/4.88 m 80 deg 1/3 cm Light Shelf Instances
Prices Artificial light 6 lamps (0.013 kW) X 12 hours a day X 0.6 shekels per kW= 0.5616 shekels For a year:204.984 shekels Optical fiber 3 optical fibers (4 m each) X 15 shekels per meter= 180 shekels Total: 180 shekels plus the price of the mirror
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