GEO THERMAL ENERGY AND FACTORS AFFECTING

1. GEOTHERMAL
ENERGY
Submitted by: NamrataBordoloi
AmbeVerma

2. Whatis Geothermalenergy?
Itis theheatenergystoredin theearth,generatedby
natural sources.
Fromthedecayof radioactivenuclei thatare
embeddedwithinthe Earth.
From residual heat left over from Earths
formation.
Therestof theenergycomesfrommeteorite
impacts.

4. NaturalSteam
reservoirs
Geo –pressured
Reservoirs
Hotwater
Reservoirs
Different Geothermal Resources

5. How does the system work
DirectSourcesfunctionby sendingwaterdownawell tobeheated
by theEarth’swarmth.
Thenaheatpumpis usedtotaketheheatfromtheunderground
watertothesubstancethatheatsthehouse.
Thenafterthewaterit is cooledis injectedbackinto
the Earth.

7. Air conditioning Drying
Greenhouses Aquaculture
Hotwater Meltingsnow
Applicationof Geothermal energy
Spaceheating

8. Aquaculture
Greenhouses
SpaceHeating/Cooling
Snow melting

9. Generationof electricity
DrySteam Plant
FlashSteamPlant
BinaryCyclePlant
HotDryRock

10. Advantages
HomegrownEnergy
Good alternativetofossilfuels
Lessgaseousemission
Low maintainence
Saves energyupto50%in comparisontoconventional systems
Independentof weather
A sustainablesourceof energy

11. Disadvantages
May causeLandSubsidence,thiscanlead
toanincreasein seismicactivity.
Can salinatethesoil if thewateris notinjected
backintothereserveaftertheheatis extracted.
Canrelease H2S.
Power plants that do not inject the cooled water back into
the ground can release H2S, the “rotten eggs” gas. This gas can
cause problems if large quantities escape because inhaling too
muchisfatal.

12. ENERGYCONSUMPTION BYDIFFERENT
ENERGY SOURCES

13. PROSPECTSOF GEOTHERMAL ENERGYIN INDIA
About 6.5% of electricity generation in the world is done by geothermal energy
and India can play an important role in the coming years in this direction.
Geological Survey of India has identified about 340 geothermal hot springs in the
country. Most of them are in the low surface temperature range from 37o
C-90o
C
which is suitable for direct heat applications.
Grouped into seven geothermal provinces. Himalayan (Puga, Chhumathang),
Sahara Valley, Cambay Basin, Son-Narmada-Tapi (SONATA) lineament belt, West
Coast, Godavari basin and Mahanadi basin.
A new location of geothermal power energy has also been found in Tattapani in
Chhattisgarh. Gujarat is set to tap geothermal electricity through resources which are
available in Cambay between Narmada and Tapi river.
India’s first geothermal plant to come up in Chhattisgarh. NTPC has already
started exploratory and preparatory work in this area. It has also started talks with
Oil and Natural Gas Corp and international organisations for drilling operation.

15. BIGGESTPRODUCERSOFGEOTHERMAL ENERGY:
Italy,Mexico,Philippines,Japan,U.S.A.,Indonesia,NewZealand,
Iceland
The UnitedStates generates 3,386MWofgeothermalelectricity.The
largestgroupofgeothermalpowerplantslocatedatTHEGEYSERS,
California.
ThePhilippines,whichgenerates23%ofits electricityfromgeothermal
energy,istheworld’ssecondbiggestproducerbehindtheU.S.
ThefirstgeothermalpowerstationwasbuiltatLandrello,inItaly,and
thesecondwasatWairekeiinNew Zealand.
InIceland
- 86%oftheirspaceheatingusesgeothermalenergy.
- 16% oftheirelectricitygenerationusesgeothermalenergy.