Geothermal Energy
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Transcript of Geothermal Energy
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Presented by , KOUSHIK K NAVEEN KUMAR M
PRADEEP P JAY KRISHNA SAI
GEO THERMAL ENERGY
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What is geothermal energy????
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AVAILABILITY OF GEOTHERMAL ENERGY IN INDIA
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HOW it is extracted????
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HYDRAULIC FRACTURING
O Hydraulic fracturing is a well-stimulation technique used commonly in low-permeability rocks like tight sandstone, shale, and some coal beds to increase oil and/or gas flow to a well from petroleum-bearing rock formations. A similar technique is used to create improved permeability in underground geothermal reservoirs. A form of hydraulic fracturing is also used in low permeability sediments and other tight subsurface formations to increase the efficiency of soil vapor extraction and other technologies used in remediating contaminated sites…
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Types of Steam Power Plants
O Dry steam power plant
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FLASH STEAM POWERPLANT
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BINARY POWERPLANT
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CO2 emissions
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Temperature drop in hot water transmission lines
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GROWTH RATE AND ANNUAL UTILIZATION.
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THERMAL POWER EXTRACTION WITH TIME
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Applications O Snow Melting and Space Cooling.O Space heating.O Agri business applications.O Aquaculture pond and raceway
heating.O Industrial applications and
agriculture drying.
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Other Applications
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Limitations
O Direct temperature requirements
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AIR POLLUTION
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O Noise pollution: Wells newly drilled or during maintenance having noise level of 90-120 dB at free discharge and 70-90 dB through silencer
O Water pollution: Reinjection is normally less expensive than no injection
O Land subsidence: as fluids are removed , pore pressure is reduced and ground tends to subside.less subsidence is expected with harder reservoir rock.
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REFERENCES • A theoretical study of geothermal energy extraction : Francis H. Harlow and william E. pracht • Geothermal energy technology and current status: an overvivew : Enrico Barbier
• Direct utilization of geothermal energy: John W. Lund
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THANK YOU