This document presents information about geothermal power plants. It discusses that geothermal power plants use heat from the Earth's core to generate electricity through various types of plants like single flash, double flash, and binary cycle plants. The key equipment in these plants includes production wells, turbines, generators, condensers, and injection wells. While geothermal energy is renewable and has low emissions, development is limited to specific hotspot locations and initial installation costs are high. Bangladesh has some geothermal potential areas that could be developed.

1. GEOTHERMAL POWER
PLANT
PRESENTED TO:
SharminAkter
Sr. Lecturer
Department of EEE
Daffodil International University
PRESENTED BY:
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2. Contents
 Introduction
 About Geothermal Power Plant
 Geothermal Hotspots
 Types of Geothermal Power Plant
 Power Plant Equipment
 Operation of Power Plants
 Geothermal Energy In Bangladesh
 Advantages
 Disadvantages

3. Introduction
Geothermal Energy:
Geothermal Energy is thermal energy generated and stored in the earth.
It is a renewable energy because of its source is the almost unlimited
amount of heat generated by the Earth's core.
Geothermal Power Plant:
Geothermal Power Plant uses superheated water to generate electricity.
It is a most efficient way to generate electricity because they require no
raw materials and having little or no impact on the environment.

5. About Geothermal Power Plant
 Current worldwide installed capacity is 10715 (MW), with the
largest capacity in the US (3,086 MW).
 India has announced a plan to develop the country's first
geothermal power facility in Chhattisgarh.
 Economically Geothermal power requires no fuel, it is therefore
immune to fuel cost fluctuations.
 Geothermal power is considered to be renewable because any
projected heat extraction is small compared to the Earth's heat
content.
 The Earth has an internal heat content of 1031 joules.
 Further, due to its low emissions geothermal energy is considered
to have excellent potential for mitigation of global warming.

6. Geothermal Hotspots
The areas in the world with the higher underground temperatures are
regions with active volcanoes or geologically young volcanic events.
These “hot spots” occur at tectonic plate boundaries or where the
earth’s crust is thin enough to let the heat through.
The Pacific Rim, with its many active volcanoes, has many hot spots,
along with Alaska, Hawaii, and much of the western United States.
These regions are also seismically active with earthquakes and magma
movement, which breaks up rock structures and allows water to
circulate. As the water rises to the surface, natural hot springs and
geysers occurs.

7. Types of Geothermal Power Plant
Generally five types of power plants are used in the world.
 Single Flash Power Plant
 Double Flash Power Plant
 Dry Steam Power Plant
 Binary Cycle Power Plant
 Combined Cycle Power Plant

8. Single Flash Power Plant

9. Double Flash Power Plant

10. Dry Steam Power Plant

11. Binary Cycle Power Plant

12. Combined Cycle Power Plant

13. Power Plant Equipment
 ProductionWell
 Generator
 Turbine
 Condenser
 Separator
 Heat Exchanger
 Injection Well

14. Operation of Power Plants
 Power House Equipment
 Automatic Control and Communication System
 Cooling System
 Particulate or Droplet Erosion
 Heat Exchangers
 Gas Evacuation Systems
 Re-Injection System
 Chemical Injection System

15. Geothermal Energy In Bangladesh
 Geo-tectonic Settings
 Sub-himalayan Foredeep
Geothermal Province
 Rangpur Saddle Geothermal
Province
 Bogra Shelf Geothermal Province
 Madhyapara Hard Rock Mine Area
 Thakurgaon High-temperature Area
 Potential Of Folded Belt
Geothermal Province

16. Advantages
 It is a renewable source of energy.
 By far, it is non-polluting and environment friendly.
 There is no wastage or generation of by-products.
 Geothermal energy can be used directly. In ancient times, people
used this
 source of energy for heating homes, cooking, etc.
 Maintenance cost of geothermal power plants is very less.
 Geothermal power plants don't occupy too much space and thus help
in protecting natural environment.

17. Disadvantages
 Only few sites have the potential of Geothermal Energy.
 Most of the sites, where geothermal energy is produced, are far from
markets or cities, where it needs to be consumed.
 Total generation potential of this source is too small.
 There is always a danger of eruption of volcano.
 Installation cost of steam power plant is very high.
 There is no guarantee that the amount of energy which is produced
will justify the capital expenditure and operations costs.
 It may release some harmful, poisonous gases that can escape
through the holes drilled during construction.