Heat source - can either be a very high temperature (above 600 degrees Celsius) magmatic intrusion that has reached a shallow depth of 5 -10 km OR as certain low temperature systems, the earth's normal temperature which increases with depth
Reservoir - is a volume of hot permeable rocks from which the circulating fluids extract heat
Geothermal Fluid - carrier that transfers the heat (water). It often carries with it other chemicals and gas compounds such a CO2 and H2S
1. Production well is drilled into a geothermal reservoir
2. Injection well is also drilled to allow the return of used geothermal fluids to the geothermal reservoir
3. Hot geothermal fluids flow through pipes to a power plant to use in generating electricity
4. Hot pressurized geothermal fluid or a secondary working fluid is allowed to generate rapidly and provide rotational or mechanical energy to turn the turbine blades on a shaft
5. Rotational energy from the turning turbine shaft is utilized to spin the magnets inside a large coil and eventually create electrical current
6. Electrical current from the generator is sent to a step-up transformer outside the power plant. Voltage is increased in the transformer and electrical current is then transmitted over power lines to homes, buildings, and business establishments
Geothermal fluid at low to moderate temperature (approximately 107.2-205˚C) is used to heat a separate fluid that has a boiling point lower than that of water
InternationalGeothermalAssociation (IGA) about 10, 715 MW of geothermal power in 24 countries are in operation, which is expected to generate 67,246 GWh in 10 hrs
Production well -is drilled into a geothermal reservoir
Injection well is also drilled to allow the return of used geothermal fluids to the geothermal reservoir
Rotational energy from the turning turbine shaft is utilized to spin the magnets inside a large coil and eventually create electrical current
Hot pressurized geothermal fluid or a secondary working fluid is allowed to generate rapidly and provide rotational or mechanical energy to turn the turbine blades on a shaft
Hot geothermal fluids flow through pipes to a power plant to use in generating electricity
Electrical current from the generator is sent to a step-up transformer outside the power plant. Voltage is increased in the transformer and electrical current is then transmitted over power lines to homes, buildings, and business establishments
Geo means earth and thermal means heat
Geothermal Energy -energy from the heat inside the earth
Two types of geothermal fluid:
Steam
Water
First geothermal power plant; 1904, Larderello,Italy
BinaryCycle Power Plant
FlashSteam Power Plant
Dry Steam Power Plant
The turbine produce energy called mechanical energy
Mechanical energy is sum total of potential and kinetic energy
Reservoirs can be suspected in the areas where we find:
Geysers
Boiling mud pot
Volcano
Hot springs
Geothermal fluid -carrier that transfer the heat(water)