Presented by , KOUSHIK K NAVEEN KUMAR M

PRADEEP P JAY KRISHNA SAI

GEO THERMAL ENERGY

What is geothermal energy????

AVAILABILITY OF GEOTHERMAL ENERGY IN INDIA

HOW it is extracted????

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…

Types of Steam Power Plants

O Dry steam power plant

FLASH STEAM POWERPLANT

BINARY POWERPLANT

CO2 emissions

Temperature drop in hot water transmission lines

GROWTH RATE AND ANNUAL UTILIZATION.

THERMAL POWER EXTRACTION WITH TIME

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.

Other Applications

Limitations

O Direct temperature requirements

AIR POLLUTION

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.

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

THANK YOU