geo-thermal power plant

8/6/2019 Geo-Thermal Power Plant

1/14

GEOTHERMAL POWER PLANT

BY:

MOHSIN RAFIQ EE306712AZWAR SAEED KHAN EE306731

FAIZ ULLAH BAJWA EE306727


2/14

GEOTHERMAL ENERGY

Geothermal energy is power extracted from

heat stored in the earth. This geothermal

energy originates from the original formation

of the planet, from radioactive decay of

minerals, and from solar energy absorbed at

the surface.


3/14

HISTORY

The ancient Romans used hot springs to heat

their baths and homes. This water was also

used for medical and cooking purposes.

18th century near Pisa, Italy. Geothermal

energy is used to extract boric acid through

the use of steam.

1904 in Italy the steam was successfully used

to generate power for the first time


4/14

HISTORY

1922 the U.S.A's first geothermal power plant

went down in history producing 250 kilowatts

which could light the streets and buildings in

the area.

1960 large scale industrial geothermal energy

power plant was constructed in the U.S.A and

produces 11 megawatts of electricity.


5/14

GEOTHERMAL POWER PLANT

A geothermal power plant uses geothermal

fluids heat to generate power.


6/14

Geothermal Fluids

Geothermal fluids originate from a

combination of deeply circulated subsurface

water and magmatic/volcanic emanations.


7/14

Geothermal Fluids

Geothermal fluid is brought up to the surface

of the earth by production well

As the fluid is in superheated form it comesupward naturally by high pressure


8/14

TYPES OF GEOTHERMAL PLANT

Dry steam Geothermal Plant

Flash steam Geothermal Plant

Binary cycle Geothermal Plant


9/14

DRY STEAM GEOTHERMAL PLANT

These were the first type of plants created. They use underground steam to directly

turn the turbines.


10/14

FLASH STEAM GEOTHERMAL PLANT

These are the most common plants. These systems pull deep, high pressured hot waterthat reaches temperatures of 3600F or more to the surface. This water is transported to

low pressure chambers, and the resulting steam drives the turbines. The remaining

water and steam are then injected back into the source from which they were taken.


11/14

BINARY CYCLE GEOTHERMAL PLANT

This system passes moderately hot geothermal water past a liquid, usually anorganic fluid, that has a lower boiling point. The resulting steam from the organic

liquid drives the turbines. This process does not produce any emissions and the

water temperature needed for the water is lower than that needed in the Flash

Steam Plants (2500F 3600F).


12/14

APPLICATION

FangLocation: ThailandConfiguration: 300 kW

Operation: 1989

Heber Second ImperialLocation: USAConfiguration: 48 MW

Operation: 1993

Raft RiverLocation: USA

Configuration: 13 MWOperation: 2008

Bagnore-3Location: ItalyConfiguration: 20 MW


13/14

GEOTHERMAL DISADVANTAGES

There is the fear of noise pollution during the drilling of wells.

Not available in many locations

Power plants that do not inject the cooled water back into the

ground can release H2S, the rotten eggs gas. This gas cancause problems if large quantities escape because inhaling too

much is fatal.


14/14

GEOTHERMAL ADVANTAGES

Useful minerals, such as zinc and silica, can be extracted fromunderground water.

This will create jobs, a better global trading position and lessreliance on oil producing countries.

In large plants the cost is 4-8 cents per kilowatt hour. This costis almost competitive with conventional energy sources

Geothermal plants do not require a lot of land, 400m2 canproduce a gigawatt of energy over 30 years.

Electricity generated by geothermal plants saves 83.3 millionbarrels of fuel each year from being burned world wide. Thisprevents 40.2 million tons of CO2 from being emitted into theatmosphere.

geo-thermal power plant

Documents