1. The Use Of Natural Light Indoors Diogo Ferreira Bar Eshkol ShaniBeracha

2. Introduction- The situation Nowadays • Use of artificial light • Ending resource Lighting 9% Pic.1-electricity usage in North America

3. The Use Natural Light Indoors • Less use of electricity • It’s free! • Ecological • Healthier

4. Our solution • Three parts: • Light shelf • Solatube • Optical fibers

5. Light Shelf • Reflects sunlight • Prevents blinding Pic.2- using light shelf

6. Summer sun Winter sun Pic.3- winter sun & summer sun

7. Light Shelf • The shelf’s properties should match the room properties. • Works only in the southern rooms Pic.4- light shelf examples

8. Pic.5- light shelf

9. Solatube Structure: • Parabolic glass • Prism • Tube with mirrors Pic.6-solatube

10. Solatube • Suitable for every sun position. • Easy to apply. • 1 tube= 33 m² • Only for the top floor • Big rooms = more tubes Pic.6-solatube

11. Pic.7-solatube example

12. Optical fibers Optical fiber Parabolic mirror Water lamp Pic.8-optical fibers system

13. Pic.9-parabolic mirror positions

14. Optical fibers

15. Conclusion • One-time expense. • Pays off after 1-2 years. • Reduces the electricity usage. • Creates a well lit house.

16. Thank you for your prompt attention! Have a sunny day! 

17. Light Shelf Instances

18. Prices