Sources of renewable energy and uses in Bangladesh

1. Renewable Energy
Md. Towhidur Rahman

2. What is Energy?
▪ Capacity to do work.
▪ It can not be created.
▪ One form of energy can be converted into another form of energy.

3. What is Renewable Energy?
▪ Energy derived from nature.
▪ Continuously produced in nature.
▪ Non-exhaustible.
▪ Clean alternative to fossil fuels.

4. Fossil Fuels
Oil Coal Natural Gas

5. What will happen when they are
gone?

6. Some forms of renewable energy
 Solar energy
 Wind energy
 Biomass energy
 Tidal energy
 Hydro energy
 Geo-thermal energy

7. Solar Energy
 The energy utilized from sunlight
 Two methods for harvesting solar energy.
- Concentrating solar thermal plant (CSP)
- Photovoltaic cell (PV)

8. Solar Energy
CSP Plant PV Plant

9. Wind Energy
▪ Energy got from wind or moving air.
▪ Wind turbines are used for getting energy.
▪ Each wind turbine can produce 0.25 to 2 MW of electric power.
▪ It requires minimum 15 km/hr wind speed.

10. Wind Energy
Wind turbine components

11. Tidal Energy

12. Hydro Energy
▪ Currently largest source of energy from renewable sources.
▪ Needs guaranteed supply of water.
▪ Kinetic energy of water rotates turbine which produces electricity.

13. Hydro Energy

14. Geo-thermal Energy
▪ The heat that used for geo-thermal energy can be
derived from deep within the heart.
▪ Heat conducts from core to surrounding rock.
<,
▪ High temperature and pressure cause rock to melt
which is called magma.
▪ Magma converts upwards.

15. Geo-thermal Energy
Geo-thermal Powerplant

16. Bio-mass Energy
 Materials from living or recently living
organisms.
 Wood, waste, gas and alcohol fuels.
 Bio-mass is commonly plant matter to
generate electricity and produce heat.

17. Uses of Renewable Energy in Bangladesh
Solar
56%
Wind
5%
Bio-gas
38%
Bio-mass
0%
Micro-hydro
1%
Solar Wind Bio-gas Bio-mass Micro-hydro

18. THANK YOU