Thermal power plants convert heat energy to electrical energy. They work by using heat to boil water to produce high-pressure steam that spins a turbine connected to a generator. The document discusses different types of thermal power plants like coal, gas, geothermal, and how they generate electricity through converting heat into kinetic energy of steam to power the turbines. Lignite coal is used because it has a lower grade and carbon content than other coals. Geothermal plants tap into underground hydrothermal resources of hot water and steam.

1. POWER GENERATION

2. Law of energy conversion
The law of conservation of
energy states that energy can
neither be created nor
destroyed - only converted
from one form of energy to
another.

3. Types of power plants
Nuclear power plants.
Hydroelectric power plants.
Coal-fired power plants.
Diesel-fired power plants.
Geothermal power plants.
Gas-fired power plants.
Solar power plants.
Wind power plants.

4. Thermal Powerplant

5. Thermal Powerplant
A thermal power station is a power station in which heat
energy is converted to electricity
Typically, heat is used to boil water in a large pressure
vessel to produce high-pressure steam, which drives a steam
turbine connected to an electrical generator.
In coal-fired power plants, bituminous coal, subbituminous
coal, or lignite is burned. The heat produced by the
combustion of the coal is used to convert water into high-
pressure steam, which drives a turbine, which produces
electricity.

6. Thermal Powerplant
Lignite is used in thermal power stations since it
is of lower grade and contains less percentage of
carbon.
Lignite is defined as non-agglomerating coal with
a gross calorific value on moist ash free
basis <4165 kcal/kg.

7. Thermal Powerplant

8. Geothermal power plants use hydrothermal resources that have both water
(hydro) and heat (thermal). Geothermal power plants require high-temperature
(300°F to 700°F) hydrothermal resources that come from either dry steam wells
or from hot water wells.