CBSE Science Fair Exhibition Project, “future is powered by us” Theme “Natural Resource & their Conservation” for Class 9, Class 10 and 12

Project Name : future is powered by us

Theme Name : Natural Resource & their Conservation

Objectives:
1. To generate electricity by sound, movement and trash during school working days and to use renewable sources like solar energy and wind energy after school working hours and during vacations.

2. To reduce the risk of spreading bacterial diseases by using anti bacterial desks and chairs.

Scientific Principle: Conversion of Sound Energy, Kinetic Energy and Trash Energy into Electrical Energy.

Project Details:

1. Materials used: Ply board (base and building), Paints (silver, black, red, white), Ribbon wire (5 mtrs), Led’s (21 units), Led’s stand (21 pcs) Solar Panels (2 pcs), Tin (used to make wind turbines), D.C. Motors (used in windmills & speed breakers), Saw dust (green colour), PVC pipe (used to make speed breakers, O.H.P. sheets (for windows glass), Fevicol, Feviquick, Fevibond, Screws, Nails, Tapes (black & white), Straws, Cardboard (used for trash part), Toy Cars, Circuit of Clap Switch, 9 volt Batteries (6 pcs), Battery Clamp (6 pcs) Scrap iron.

Working:

1. Sound Tiles: Sound waves create vibrations and hit the special gold plated tiles. The waves travel through Zinc Oxide Nano wires and then converted to electricity.

2. Piezoelectric Crystals with Cork Layer: When the people step on the floor, the crystals react to the movement and produce power. Wires under this layer will lead the power to power house.

The springy material of the cork layer above the piezoelectric layer helps in effective compression and hence more generation of electricity.

Antibacterial Tables and Chairs: The school can have tables and chairs coated with plastic sharklet material that bacteria cannot stick to or grow on. This prevents the spread of cold and flu amongst students and keeps them healthy and fit.

4. Renewable sources of energy: During school working hours, electricity is being produced by sound and movement, However, after the school working hours and during the holidays, energy of our conventional renewable sources i.e. wind and sun are used to generate electrical power, which is clean, cost effective and efficient. For this, solar panels and windmills can be installed in the school premises.

5. Trash: Biomass materials such as wood, sawdust, dried leaves and garbage can be used as renewable sources of energy by burning it, turning it into a liquid or gas called biogas to heat schools, cook food, and even produce electricity.

Utility – Calculations: The idea dubbed as “Crowd Farming” is to install a flooring system that would take advantage of piezoelectric principles by harvesting power from footsteps in school.

Although the power output from the single piezo-films is low, the voltage output produced is in the range of 1.2 volts. This can be easily stored in the small nickel metal hydride batteries. The fully charged battery can then provide with a steady current of 760 mA and potential difference of 1.2 volts. This gives us an estimated power of 1 watt approximately.

1. For 2 seconds lighting of one bulb, we need 5 watts (1 footstep)

2. For six working hours per day i.e. 21600 seconds, we need, 5/2* 21600 = 54000 watts

3. If there are 2000 students in a school who have an average footstep fall of 500, then Total footsteps = 2000 * 500 = 1000000

4. Power generated in a day = 5 * 1000000 = 5000000 watts

5. No. of bulbs which can be lighted in a day = 5000000/54000 = 92 approximate.

Further Scope: The same concept can be used in crowded places such as railway stations, malls, concerts and anywhere where large groups of people move. The key is the crowd. It’s not beyond the realm of possibility that:

1) Approximately 28,500 footsteps generate energy to power a train for one second.

2) In the clubs, an individual club–goer could generate roughly 5 to 10 watts, and on a night where the dance floor is packed with moving bodies, the energy from the floor could supply about 60 percent of the club’s total energy needs.

3) Similarly 84,162,203 steps could generate enough power to launch a space shuttle.

Name of the School: St. John’s High School, Sector-26, Chandigarh.