ELECTIVE 2- GEOTHERMAL ENERGY

geothermal

has Greek roots with γη (geo), meaning earth, and θερμος (thermos), meaning hot.

geo

meaning earth

thermos

meaning hot.

Geothermal energy

is a renewable energy source derived from the heat stored beneath the Earth's surface. It harnesses the natural heat of the Earth to generate electricity or provide direct heating.

Romans and Chinese

Ancient civilizations such as the ________ and______ used hot springs for bathing and heating.

1904

The modern era of geothermal energy began in _______ when the first geothermal power plant was built in Italy.

Palaeolithic Age.

geothermal heat has been used for bathing since the __________________.

Monkeys

_________ in Japan have also been shown to use heated water from hot springs to keep warm during winter months in mountainous regions.

1924

The first power generation well was sunk in ?

Geothermal Reservoir

A natural underground reservoir of hot water and steam.

Geothermal Vent

Wells drilled into the reservoir to extract hot water or steam. is a deep well drilled into the Earth that the power plant uses to tap into the Earth's heat.

Steam Turbine

Converts the energy of steam into mechanical energy.

Generator

Converts mechanical energy from the turbine into electrical energy

Condenser

Converts the steam back into water after it passes through the turbine.

Cooling Tower

Cools the condensed steam back into water for reuse.

Renewable

Low Emissions

Reliable

Localized

ADVANTAGES of geothermal

Renewable

Geothermal energy is a virtually limitless resource.

Low Emissions

It produces fewer greenhouse gas emissions compared to fossil fuels.

Reliable

It provides continuous power generation, unaffected by weather conditions.

Localized

Geothermal power plants have a small physical footprint.

Location Specific

High Initial Costs

Environmental Impact

Depletion

DISADVANTAGES of geothermal

Location Specific

Geothermal resources are concentrated in certain regions, limiting widespread adoption.

High Initial Costs

Drilling and infrastructure costs can be expensive.

Environmental Impact

Geothermal plants can release small amounts of greenhouse gases and pollutants.

Depletion

Overuse of geothermal reservoirs can lead to depletion or decreased efficiency.

DRY-STEAM POWER PLANTS

take advantage of natural underground sources of steam. The steam is piped directly to a power plant, where it is used to fuel turbines and generate electricity

FLASH-STEAM POWER PLANT

use naturally occurring sources of underground hot water and steam. Water that is hotter than 182° C (360° F) is pumped into a low-pressure area.