Eco-Brella: prototype development of the umbrella as harvester of solar and wind energies

Abstract

The familiar umbrella has been redesigned for power harvesting from renewable energy sources resulting in the Eco-Brella . Several engineering technologies are utilised: aerodynamics for fin design, mechatronics for power management, materials for thermoelectric and solar film, CAD for the layout, and heat transfer for human comfort. The result is a sustainable design capable of harvesting both solar and wind energies which are converted into electric power for the benefit of the individual carrying it. In windy climates, the Eco-Brella rotates by virtue of a light turbine which causes rotation of a dynamometer. Solar film is shaped into an umbrella-like configuration with efficient power conversion (10%–20% depending on conditions). Generated power is channeled through power management system capable of 1) charging a rechargeable battery from which other batteries of portable electronic devices are charged and/or 2) providing personal thermal comfort by blowing cool (hot) air on hot (cold) days.