Project Name : Electricity production from speed breakers
Theme Name : Natural Resource & their Conservation
Objective/Aim: To produce electricity using speed breakers on roads
Scientific Principle Involved: Application of air pressure difference to produce
electricity
Material Used: Two PVC pipes, A polyvinylchloride anti-static frame, An
empty film roll, A thin iron rod/shaft, Two strong magnets, Copper wire, Two LEDs, Water
Working Investigation/Findings: When the pipes were arranged as in the diagram, on application of a force, the pipe placed above moved downward into the second one. The upper pipe was filled with air, which was forced out by the water in the second one. The air was allowed to move out through a hole in the upper surface of the pipe. The air turned a turbine which was in turn was attached to an iron rod/shaft. When the turbine turned it caused the shaft to turn as well. The
magnets attached to the shaft started to spin as well and caused electricity to flow through the copper wire due to electro-magnetic induction thus lighting up the bulb. It was found that when the frequency with which the pressure was applied was low, the amount of electricity produced was more than when the frequency was high. Also increases pressure resulted in increased energy output.
Utility and further Scope of the Project: The project was made keeping in the large number of vehicles plying on the streets. This model can be easily put into use by replacing all the plastic components with those made of steel. If a trench is dug below a road with the model placed in it and the top of the frame being covered by a sort of speed breaker fixed to the frame then the model can
be put into practical use. Also the production of electricity can be increased with the help of gears and also by using two generation in place of one.
Name of the School: Maharishi Vidya Mandir Sr. Sec. School, Guwahati.
