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Empowering energy

Empowering energy. CINE Course IIMA - PGP-II - February 2009 Pierfrancesco Rocca. How things are today. We produce/capture a lot of energy We (ab)use it We waste a lot of it. Why are things like this?. Why do we waste so much energy? Endogenous reasons Our habits Our needs Our income

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Empowering energy

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  1. Empowering energy CINE Course IIMA - PGP-II - February 2009 Pierfrancesco Rocca

  2. How things are today • We produce/capture a lot of energy • We (ab)use it • We waste a lot of it

  3. Why are things like this? • Why do we waste so much energy? • Endogenous reasons • Our habits • Our needs • Our income • Exogenous reasons • Availability • Technology

  4. Energy wastage: the role of technology • Most tools transform electric energy into other types of energy: • Light • Wind • Heat • Kinetic • etc. BUT • That’s not the end of the story!

  5. A new role for technology • New technologies should be able to convert their outputs (light, wind, heat, etc.) into a new input (electricity) ready to be re-used • New energy would be generated from otherwise wasted one • Some wastage would still be there, but the overall efficiency in energy usage would increase

  6. The project: self-sustaining lamp • Most ceiling- or wall-lamps are supported by a plastic-made structure • Light is shed at 360º, also on the plastic part, which does not need to be lighted at all • That light is wasted, and it could be re-used without worsening the performance of the lamp (the light is anyway blocked by the material)

  7. The project: self-sustaining lamp • The part of the plastic structure facing the bulb will be covered with photovoltaic cells • Solar cells will capture the light produced by the bulb and convert it into electric energy • A small, basic transformer or battery will be attached to the structure of the lamp, in order to store the electric energy and make it re-usable • Possible uses of the electric energy re-created: • Mobile phones charging • Minor appliances use or charging

  8. The project: self-sustaining lamp • Surface of area covered with solar cells 3” x 48” = 144” sq • Cost of solar cells 2.45 $ per 3”x6” 2.45 x 8 = 19.60 $ • Energy (light) irradiated by the tube bulb 36 W • Energy (light) absorbed by the solar cells .33 x 36W = 12 W • Energy (electricity) produced by the solar cells .33 x 12W = 4 W

  9. The project: self-sustaining lamp • Daily wattage of the solar cells 4W x 15hrs = 0.060 kWh • Price of electricity 20 ¢/kWh • Daily savings obtained through the system 20 x 0.060 = 1.2 ¢ • Yearly savings 1.2 x 350 = 4.20 $ • Battery price 2 $ • Payback period 5.9 years

  10. Further ideas • Re-use of: • Heat generated by working computers • Kinetic energy generated by user pressing computer’s buttons • Wind energy generated by room fans • Kinetic energy generated by water falling down in pipelines • Wind energy created by cars running on highways

  11. In a nutshell… Nothing is created, nothing is destroyed, everything is transformed!

  12. ?

  13. Thank you

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