FUTURE CHALLENGES FOR RENEWABLE ENERGY SYSTEMS

Presented by,SAJITHA.S,SASIREGA.PElectronics and Instrumentation Engineering,Karpagam College Of Engineering,Coimbatore-641032.

An Overview…• What are renewable resources?• Advantages of renewable resources• Future challenge in Electricity

generation• Generating electricity from car

motion using nanogenerator• Merits• Future enhancement

What are renewable resources?

Any energy resource that is naturally regenerated over a short time scale and that is not depleted when used such as,i. Solar energyii. Wind poweriii. Tidesiv. Hydroelectricityv. Geothermal power , etc

-are called as renewable resources

Advantages of Renewable Energy system

• Renewable energy is, well, renewable:Renewable energy is not limited ,it is renewable Strong winds, heat within earth, moving water, shining sun acts as renewable resources• Environmental Benefits: It is clean & it will not deplete our natural resources. Enables us to protect the environment from toxic pollutions, which in turn keep people healthier.

Advantages of Renewable Energy system

•Economic benefits:Renewable energy is also cheaper and more economically sound than other sources of generated energy•Stabilize Energy Prices: Since the renewable resources are stable , the cost of renewable energy is dependent on the invested money and not the increasing or decreasing or inflated cost of the natural resource

Future challenge…in ELECTRICITY GENERATION

Energy is wasted in many ways ,even during transportation, for eg.,

when a car is in motion ,the frictional force between the road and the car tyres produces some energy which is being wasted…

That energy is a RENEWABLE ENERGY! It remains until TRANSPORTATION EXISTS IN THIS WORLD.

It can be converted into electrical energy which is a FUTURE CHALLENGE!

GENERATING ELECTRICITY FROM CAR MOTION USING NANOGENERATOR

Introduction:A car in motion -> the tyre with thermo/piezoelectric material

rotates -> heat and motion is turned into electricity.

The friction created ,as a car's tires run over the ground accounts for approximately 10 percent of the vehicle's fuel usage.

To overcome this energy wastage , we can use a NANOGENERATOR which is a thermo or piezoelectric crystal.

This can be a development that could bring about better fuel efficiency in the full-sized cars of the future.

PRINCIPLE OF THIS TECHNOLOGY:

The electrical charge that is created when certain materials come into contact with one another .This is known as the “triboelectric effect “

The triboelectric effect (also known as triboelectric charging) is a type of contact electrification in which certain materials become electrically charged after they come into frictive contact with a different material.

NANOGENERATOR: It is a type of technology that converts

mechanical/thermal energy as produced by small-scale physical change into electricity.

Nanogenerator has three typical approaches:1. piezoelectric nanogenerators,2. triboelectric nanogenerators, and3. pyroelectric nanogenerators. In this project , we have used PIEZOELECTRIC NANOGENERATOR

PIEZOELECTRIC CRYSTAL

Piezoelectric crystals are one of many small scale energy sources. Whenever piezoelectric crystals are mechanically deformed or subject to vibration they generate a small voltage, commonly know as piezoelectricity.

PIEZO ELECTRIC EFFECT:Piezoelectric Effect is the ability of certain materials to generate an electric charge in response to applied mechanical stress.

DESCRIPTION ABOUT THE PROJECT:

I. The motion of a vehicle on the road using NANOGENERATOR , turns heat and motion into electricity using a fishnet pattern of thermo/piezoelectric material

II. The vehicle has an electrode built into a section of the tire.

III. As the wheel spins and this part of the tire comes into contact with the ground, the charge created by the friction causes electrons to move, in turn generating electricity.IV. As the car moved forward, enough power was created to cause the lights to

flash on and off, suggesting that this hitherto wasted energy could actually be captured and put to use.

V. The amount of energy the system was able to produce was proportionate to both the weight of the vehicle and the speed at which it was traveling.

STATISTICS

• Cars are one of mankind's most revolutionary creations.

• It is a major means of transportation in india and all over the world.

• Hence, the energy wasted over cars can be renewed(captured) and put into a new form(Electricity)

MERITS…• The system produce a small amount of electricity,is stored in

the battery of the vehicle(car) which is enough to glow the headlights in vehicle.

• The electricity thus generated is sufficient to charge the mobile phone inside the vehicle.

Thus the loss of 10% of energy wastage in terms of fuel is REGAINED IN TERMS OF ELECTRICITY

FUTURE ENHANCEMENT…1. We have projected our idea by implementing the

Nanogenerator technology in cars, the same can be implemented with all two wheelers , three wheelers & four wheelers.

2. The electrical energy thus saved can be stored in a separate battery rather than the battery of the vehicle and it can be used for various purposed in real time applications

3. Further technology can be imposed on the fact, to increase the amount of electricity generated. The electricity generate using this system is quite small.

Conclusion:Thus the increasing use of renewable energy has the potential to create still more jobs. Generating electricity from renewable energy rather than fossil fuels offers significant public health benefits.

REFERENCES:http://www.gizmag.com/nanogenerator-energy-car-wheels/38224/http://www.gizmag.com/goodyear-bho3-electric-tire/36548/ http://greenliving.lovetoknow.com/Examples_of_Renewable_Resourceshttp://www.smithsonianmag.com/science/seven-unexpected-ways-we-can-get-energy-water-180952625/?no-ist