SOLAR CAR: SOLAR CAR WHY DO WE NEED TO USE SOLAR ENERGY?: WHY DO WE NEED TO USE SOLAR ENERGY? PowerPoint Presentation: 1.To achieve social responsibility : We are daily using lots of fossil fuel and other carbon compounds, that are polluting our environment. Initiating Global Warmning , environmental imbalance, ozone layer depletion and which inturn is a big threat to the future human race. Solar energy is a clean and a green energy, harnessing it will not pollute the environment or generate any adverse effects. PowerPoint Presentation: 2. To achieve financial goals: Solar energy after installation is INFLATION FREE source of power, which means you are not dependent on fluctuating raw material cost for your generation of power...This adds to energy independence. Also in countries where conventional power is expensive and wind energy is not regular solar energy tends to be the most efficient solution. In countries where power is not reliable, we can opt for green source of energy to replace diesel generators or battery backup. PowerPoint Presentation: Now not going very deep inside the benefits of solar energy I would like to take you in the world of S olar cars and let us explore their significances and their uses: The topics we could cover throughout this presentation are: Introduction to Solar cars Mechanism of Solar cars Preparation of Solar cars Solar cars as Eco friendly solution Now without any further do I would like to start my presentation and give u a brief explanation on the above mentioned points.. SOLAR CAR: SOLAR CAR Solar car is basically a car which uses the natural resourses i.e.Sunlight to run .In solar cars ,there are solar cells or solar pannels are fitted on or on the place of their body .Electrons in solar cell in sunlight gains energy and hence comes in exicted electrons are responsible for conduction of electricity. PowerPoint Presentation: MECHANISM OF SOLAR CAR CONSTRUCTION of solar car: CONSTRUCTION of solar car Step 1: Construct the basic car chassis with 4 wheels.Cut a strip of wood that is of 20cm in length and 9cm wide .Mark the location of axles by drawing two lines, one on each end of the car chassis, parallel to the front or back side. PowerPoint Presentation: Step 2: Cut the 1.4cm wide and 4.5cm in length on the outer side of the car along the four corners. Step 3: Now from on the back side drill a rectangular hole of about 1.2cm wide and 4.4 cm in length. (as shown in diagram) PowerPoint Presentation: Step 4 Now cover the chassis of the car with black paper. Step 5 Fit the front tyres with the help of clumps. Step 6 Fit the back tyres which are already fitted with a D.C motor. PowerPoint Presentation: Step 7: Now make the body for this car from Galvanized Iron sheet or plastic or ply board PowerPoint Presentation: Advantages of solar energy 1. The abundance of Solar Energy. Even in the middle of winter each square meter of land still receives a fair amount of solar radiation. Sunlight is everywhere and the resource is practically inexhaustible. Even during cloudy days we still receive some sunlight and it is this that can be used as a renewable resource. 2. We don’t pay for sunlight. Sunlight is totally free. There is of course the initial investment for the equipment. After the initial capital outlay we won’t be receiving a bill every month for the rest of your life from the electric utility. 3. Solar energy is getting more cost effective. The technology for solar energy is evolving at an increasing rate. At present photovoltaic technology is still relatively expensive but the technology is improving and production is increasing. The result of this is to drive costs down. Payback times for the equipment are getting shorter and in some areas where the cost of electricity is high payback may be as short as five years. PowerPoint Presentation: 4. Solar energy is non-polluting. Solar energy is an excellent alternative for fossil fuels like coal and petroleum because solar energy is practically emission free while generating electricity. With solar energy the danger of further damage to the environment is minimized. The generation of electricity through solar power produces no noise. So noise pollution is also reduced. 5. Accessibility of solar power in remote locations. Solar power can generate electricity no matter how remote the area as long as the sun shines there. Even in areas that are inaccessible to power cables solar power can produce electricity. 6. Solar energy systems are virtually maintenance free. Once a photovoltaic array is setup it can last for decades. Once they are installed and setup there are practically zero recurring costs. If needs increase solar panels can be added with ease and with no major revamp. PowerPoint Presentation: Disadvantages of solar energy 1.High initial capital outlay. The initial cost of installing a solar energy system can be prohibitively high for some budgets. The cost of buying and installing solar panel arrays is a bit steep. Payback times may reach from ten to fifteen years before you can even break even with your initial investment. 2.Dubious reliability. It is obviously impossible to power your home with a solar array at night if you don’t have a system in which to store power. This means batteries at our present level of technology. So you will probably still need to draw electricity from the local utility grid. 3.Availability of sunlight. The position of your solar array is obviously of major importance in the generation of electricity. This means that some houses will not be ideally suited for conversion or for installing a solar energy system. PowerPoint Presentation: 4.Polluting materials used in solar panels. The majority of photovoltaic panels are made from silicon and other metals that are potentially toxic like mercury, lead, and cadmium. This is the dirty secret of this “clean” technology. 5.The efficiency question. The current efficiency rate of most solar panels is just a mere forty percent. This means that sixty percent of the sun’s energy is wasted. There are some state of the art solar panels that can reach a maximum efficiency of eighty percent. There are continuing technological advances that increase efficiency and lower costs. PowerPoint Presentation: Future aspects of solar energy 1.Rural electrification Lack of electricity infrastructure is one of the main hurdles in the development of rural India. India's grid system is considerably under-developed, with major sections of its populace still surviving off-grid 2. Agricultural support Solar PV water pumping systems are used for irrigation and drinking water. The majority of the pumps are fitted with a 200–3,000 watt motor that are powered with 1,800 Wp PV array which can deliver about 140,000 liters of water per day from a total head of 10 meters. PowerPoint Presentation: 3.Solar driers are used to dry harvests before storage. 4.Solar water heaters Bangalore has the largest deployment of rooftop solar water heaters in India. These heaters will generate an energy equivalent of 200 MW every day Challenges and constraints : Challenges and constraints Land scarcity Land is a scarce resource in India and per capita land availability is low. Dedication of land area for exclusive installation of solar arrays might have to compete with other necessities that require land. The amount of land required for utility-scale solar power plants—currently approximately 1 km 2 for every 20–60 megawatts (MW) generated could pose a strain on India's available land resource. The architecture more suitable for most of India would be a highly-distributed set of individual rooftop power generation systems, all connected via a local grid.However , erecting such an infrastructure, which does not enjoy the economies of scale possible in mass, utility-scale, solar panel deployment, needs the market price of solar technology deployment to substantially decline, so that it attracts the individual and average family size household consumer. That might be possible in the future, because PV is projected to continue its current cost reductions for the next decades and be able to compete with fossil fuel. PowerPoint Presentation: Slow progress While the world has progressed substantially in production of basic silicon mono-crystalline photovoltaic cells, India has fallen short of achieving the worldwide momentum. India is now in 7th place worldwide in PV cell production and 9th place in solar thermal systems, with nations such as Japan, China, and the US currently ranked far ahead. Globally, solar is the fastest growing source of energy (though from a very small base) with an annual average growth of 35%, as seen during the past few years.