Solar Energy_by_abubakkar Marwat

Scope of the Presentation:

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Introduction The way Solar Energy is used Significance Cost Applications Solar Energy in Pakistan Conclusion

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Introduction

Solar energy is the radiant light and heat from the Sun {1.4 kW/m2)

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The amount of solar energy that reaches the Earth’s surface every hour is greater than humankind’s total demand for energy in one year

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Earth as viewed from space in December 1990. South America is near the center of the left-hand picture, while Africa is near the top of the right-hand image. Antarctica is visible near the bottom of both images. Note how much sunlight is reflected back into space by clouds and by snow and ice. Note also how light the deserts of northern Africa appear as compared to the Amazon forests of South America and the jungles of central Africa.

The way Solar Energy is used  Directly to heat water using large 

thermal reflector or thermal absorbers {Solar Thermal Energy} Convert into electricity by means of Photovoltaic cells {Solar Photovoltaic Electricity}

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Solar Thermal Energy 

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Used in clear, bright weather

Solar Photovoltaic Electricity Cold Weather  Cloudy Conditions  Isolated Generation 

Significance 

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Fastest –growing power generation technology in the world Solar industry has a 15 year history of 25% annual growth One of the hottest areas in energy investment Declination of oil & coal Currently Solar industry is growing By 40 %

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Currently solar power is 5% of total worldwide energy Solar power is predicted to become 10% of total worldwide energy in 2025 More competitive in terms of price also. Solar panel price is going down so more countries are investing in solar energy

Cost 

Cost of setting up a solar power plant is around Rs 20 crore per MW

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Cost of setting up a solar thermal power plant is around Rs 4 crore per MW

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5 acre land is sufficient for setting one MW plant.

Applications 

Architecture applications 

include heating systems, cooling systems, and ventilation systems

•Passive solar heating can use overhangs to shield the home from the sun in the summer, and warm the home when the

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Solar Cookers

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Solar Oven With this solar oven, you can cook for a family of 10 persons  The cooking process takes twice as much time as a traditional oven  The temperature can 

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Solar Water Heating

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Solar Traffic Signals

Continued…  Solar Vehicles

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Solar Power Plant

Solar Energy in Pakistan 

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Pakistan has a good potential of solar energy and the country has 300 sunny days per year If 0.25% of Baluchistan was covered with solar panels with an efficiency of 20%, enough electricity would be generated to cover all of Pakistani demand We have both the thermal and panel systems

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The solar plant of 400 watts cost Rs 400,000 while the 200 watts plant cost Rs 225,000 only In a village about 50 kilometers from Islamabad, 100 solar panels have been installed by a local firm, free of cost, to promote the use of solar energy

Conclusion 

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Solar energy is fastest growing profitable industry. So Pakistan should enter in solar power as soon as possible Pakistan should set up the solar thermal plant because it is cheap compare to solar power plant

Thanks…