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A Presentation upon Harnessing Solar energy its prospects and challenges

Welcome to the presentation

Slide 1

Name-Ujjwal KumarClass- IX ‘A’

IntroductionIn today's climate of growing energy needs

and increasing environmental concern, alternatives to the use of non-renewable and polluting fossil fuels have to be investigated. One such alternative is solar energy.

Solar energy is quite simply the energy produced directly by the sun and collected elsewhere, normally the Earth. The sun creates In today's climate of growing energy needs and increasing environmental concern, alternatives to the use of non-renewable and polluting fossil fuels have to be investigated. One such alternative is solar energy.

Slide 2

What is a solar cell?

A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.

How does a solar cell works?Simply put, a solar panel works by allowing photons, or particles of light, to knock electrons free from atoms, generating a flow of electricity. Solar panels actually comprise many, smaller units called photovoltaic cells. (Photovoltaic simply means they convert sunlight into electricity.)

Some history beyond solar cell!!!!1950s - Bell Labs produce solarcells for space activities. 1953 - Gerald Pearson begins researchinto lithium-silicon photovoltaic cells. 1954 – On April 25, 1954, Bell Labs announces the invention of the first practical silicon solar cell.

Current contribution of Energy Resources

Slide 3

Prospects of solar energyWater heatingCookingWater treatmentElectricity productionArchitecture and urban planningAgriculture and horticulture

Water heating

Solar water heaters facing the Sun to maximize gain.

Cooking

Parabolic dish produces steam for cooking, in Auroville, India

Water treatment

Solar water disinfection in Indonesia

Electricity Production

Some of the world's largest solar power stations: Ivanpah (CSP) and Topaz (PV)

Indian solar resource

Thank you!