Solar energy and it's future in in india.pptx

Describes about solar energy

1. Solar Energy-pros and challenges S HASHWAT GUPTA 20206045

2. SOLAR ENERGY AND ITS OVERVIEW With the growing threat of climate change due to the excessive release of carbon emissions, many nations are looking to clean energy alternatives to replace traditional fossil fuels. Of all the clean energy alternatives, solar has arguably been the most expensive though prices have been declining. However, after considering the pros and cons along with the expectation that prices will continue to decline, the future of solar energy is looking rather bright Solar Energy as an alternative of sustainable source of energy and good alternative of conventional fossil fuel

3. WHAT IS SOLAR ENERGY AND HOW IT WORKS? Solar energy is electrical or thermal energy harvested from sunlight. Solar panels contain photovoltaic (PV) cells made up of semiconductor materials Semiconductor materials (such as silicon) absorb elemental particles from the sun called photons. The flow of these electrons within the cell creates an electric current we can direct to our circuits. The sun’s constant barrage of energy in the form of photons can be collected, transformed and used to power home and businesses.

4. The Advantages of Solar Energy Sustainability Low Environmental Impact Renewable Energy source Diverse Application Reduces Electricity bill Low Maintenance Cost Technological Development

5. How Sustainable Is Solar Energy? Solar energy certainly remains more sustainable than fossil fuels Fossil fuels are limited in supply and release harmful greenhouse gasses into the atmosphere when burned. The limiting factor in the sustainability of solar energy overall primarily comes from a scarcity in the raw materials required to produce solar technology. The use of solar power in lieu of grid power, however, offsets the emissions and carbon footprint of production. Solar panels are ultimately recyclable, as they’re made from glass, metal and silicon.

6. Solar Energy and Transport Solar energy has been investigated for transport uses for decades Solar panels are also used to provide auxiliary power for applications like air conditioning, which reduces fuel consumption. The first solar boat was built in England in 1975 and, since then, solar powered boats successfully crossing the Pacific and Atlantic oceans. Solar energy has also been used for manned and unmanned flight Solar flight has tended to focus on unmanned aerial vehicles (UAV). Another technological advancement , Solar balloons are black balloons filled with normal air, which expands as the sunlight heats it up, creating an upward buoyancy

7. Solar Powered Fuel Production Solar energy can be used to drive chemical reactions, offsetting the use of fossil fuel sources to create storable and transportable fuels. These techniques can be thermochemical or photochemical and can produce a variety of fuels. Thermochemical processes and the use of photovoltaic cells have both been explored for the production of hydrogen, which can be used as a fuel. This can be achieved by using concentrators to split water into oxygen and hydrogen at high temperatures, using the heat from solar concentrators to drive steam reformation, or simply using clean electricity from solar energy to split water into hydrogen and oxygen.

8. Passive Solar Energy Use Architecture and Urban Planning Modern solar architecture uses these passive methods alongside computer modelling, pumps, fans, solar lighting, solar heating and solar ventilation technologies. Urban areas with high temperatures due to materials with high levels of solar absorption like asphalt can be cooled down by planting trees and panting buildings and roads white These passive cooling techniques reduce air-conditioning costs and can even provide healthcare savings.

9. Passive Solar Energy Use 2. Agriculture and Horticulture The orientation of plant rows, the use of different row heights and mixing plant varieties to improve exposure to sunlight and crop yields. Other techniques include the use of fruit walls as thermal masses to accelerate ripening by keeping plants warm. Greenhouses have been used to convert solar light to heat and allow crops not suited to a local climate to be grown as well as year-round production since Roman times. Modern greenhouses grew in use across Europe during the 16th Century where they were used to keep exotic plants that were brought back from around the world.

10. Examples and Applications of Solar Energy Thermal Energy Applications Water Heating Cooling, Heating and Ventilation Cooking Process heat Water Treatment Electricity Generation Examples 1. Photovoltaics (PV) 2. Concentrated Solar Power

11. CONS OF SOLAR ENERGY High cost of solar panels Sunlight dependent Space constraints Installation can be difficult Solar energy storage is expensive Environmental Impact of Manufacturing Scarcity of Materials Difficulty With Relocation Disposal or Recycling Options

12. THANK YOU