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1 An Introduction ppt - Saurabh Mehta Renewable Energy Technologies in Power Generation.

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Presentation on theme: "1 An Introduction ppt - Saurabh Mehta Renewable Energy Technologies in Power Generation."— Presentation transcript:

1 1 An Introduction ppt - Saurabh Mehta Renewable Energy Technologies in Power Generation

2 2 Introduction Wind Energy Solar Energy Contents

3 3 Introduction Wind Energy Solar Energy Contents

4 4 Introduction Renewable Energy – any sustainable energy source that comes from natural environment. Some Aspects of Renewable Energy It exists perpetually and in abundant in the environment Ready to be harnessed, inexhaustible It is a clean alternative to fossil fuels energy that is derived from natural process that are replenished constantly -- defined by the RENEWABLE ENERGY WORKING PARTY of the INTERNATIONAL ENERGY AGENCY

5 5 Introduction Contribution of Renewable Energy in World Electricity Production

6 6 Introduction Major Renewable Energy Sources Hydro Energy Wind Energy Solar Energy Biomass Energy Tidal Energy Geothermal Energy Wave Energy Bio-fuel Bagasse

7 7 Present Installed Capacity of Renewable Energy Sources in India Renewable Energy SourcePresent Installed Capacity Wind10200 MW Small Hydro2100 MW Bagasse750 MW Biomass620 MW Solar2 MW Total RE Installed Capacity – 13672 MW Source: Ministry of New & Renewable Energy Sources (MNRE)

8 8 Introduction Solar Panels Wind Turbine Generators

9 9 Introduction Wind Energy Solar Energy Contents

10 10 Wind Energy - Technology Differential heating of the earths surface and atmosphere induces vertical and horizontal air currents that are affected by the earths rotation and contours of the land and generates WIND. A wind turbine obtains its power input by converting the force of the wind into a torque (turning force) acting on the rotor blades. The amount of energy which the wind transfers to the rotor depends on the density of the air, the rotor area, and the wind speed. PLF of Wind Farm is normally in the range of 20 % to 30% depending upon the site conditions and WTG rating. P Power ρ Air Density (kg/m 3 ) A Blade Area -turbine (m 2 ) V Wind velocity (m/s) P = 0.5 X ρ X A X V3

11 11 Major Components of Wind Turbine Wind Energy - Technology

12 12 Wind Energy – Present Scenario Wind Power – Fastest growing renewable energy source Globally, it grew at the average rate of 27 % pa over the past 10 years. While in India it grew at the average rate of 33% over the past 9 years. Presently, India is ranked 4 th in the world in terms of Wind Energy Installed Capacity Drivers of growth Environmental Awareness and Sustainable Development Growing Global Energy Demand Improving Competitiveness of renewable energy Security of Supply Concerns New Markets (e.g. India, China etc) Carbon Trading Fiscal Benefits by Govt. (PTC, feed in tariffs, etc)

13 13 Introduction Wind Energy Solar Energy Contents

14 14 Solar Energy - Technology Solar power is by far the Earth's most available energy source, easily capable of providing many times the total current energy demand. Solar power is the conversion of sunlight into electricity. Two main commercial ways of conversion of sunlight into electricity. Concentrating Solar Thermal Plant (CSP) Photovoltaic Plants (PV) CSP and PV both have their markets. PV is very successful in decentralized applications, whereas CSP offers advantages for central and large-scale applications. CSP power plants are the most cost-efficient way to generate and to store dispatch able CO 2 -free electricity. However, there is no competition between both. Rather, they have to be seen as complementary technologies. PLF of CSP – In the range of 20 % to 30 % PLF of PV – In the range of 15 % to 20 %

15 15 Solar Energy - Technology Concentrating Solar Thermal Plant (CSP) It contains; Collector Field Turbine Generator Cooling Tower Transformer Courtesy: ESP Solar

16 16 Solar Photovoltaic Plants (PV) It contains; Solar Arrays Inverter Transformer Solar Energy - Technology

17 17 Solar Energy - Technology In both CSP and PV technologies, solar resources plays major role. Maps are available to calculate solar resource of a particular region. However, for both CSP and PV technologies different solar radiations are taken into account. Basically two types of solar radiations are there; Global Horizontal irradiations (GHI) Direct Normal Irradiation (DNI) For PV technologies GHI is considered. GHI consists of diffuse radiations and direct horizontal radiations (beam). Minimum GHI – 1000 kwh/m 2 pa For CSP, DNI is considered. DNI is the amount of radiation received by a surface which is permanently aligned perpendicular to the incoming beam. Minimum DNI – 1900 kwh/m 2 pa

18 18 A typical DNI irradiation Map for India which is used to find a feasible site for CSP Plant. A typical GHI irradiation Map for India which is used to find a feasible site for PV Plant. Solar Energy - Technology

19 19 Solar Energy – Current Scenario The total installed capacity of solar power (Both CSP and PV) as of 2008 is 2826 MW. In India the total installed capacity of solar power is around 2 MW. In India, various government and private players have entered into CSP and PV markets. MNRE has set a target to establish at least 50 MW of solar projects during the 11 th plan.

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