Briefly discuss the types of Renewable sources of Energy.

Answers

1. Sun
2. Wind
3. Water (geothermal, hydro power, tides and waves).
4. Biomass (wood, biogas)
5. Animals.

Sun

-Energy from the sun is called solar energy.
-The sun is the primary source of all types of energy.
-Solar radiation can be converted into 2 types of energy.

Heat

-Solar panels are used to tap solar energy which is then used to heat water in coiled pipes which are inside which are painted black.

-Mirrors are used to converge rays of the sun on one spot which are then used to heat water or cook food in a pot.
-Sun’s rays are reflected and focused on crops to dry them.

Electricity

Photo- voltaic cells are used which when sunlight shines on them they generate electricity which is then stored in batteries

Wind

Wind energy is mainly used in arid and semi-arid areas where wind flow isn’t obstructed by vegetation.

- Wind is harvested using wind mills and converted into mechanical energy which is used for pumping water, grinding grain and generating electricity.

Water

Geothermal Power
-Steam from underground is heated when in contact with hot rocks.
-The steam finds its way to the surface through fissures or cracks.
-The steam is tapped and used to turn turbines and thus generate electricity e.g. at Olkaria in Kenya

Hydro/Water-power
-Power obtained from falling water
Most widely used renewable source of energy.
-Used to generate electricity (HEP) when falling water is directed to turn turbines connected to generators to produce electricity.

Biomass

-All forms of energy released by plants and animal wastes.

Wood fuel

Biogas
Human and animal wastes are used to produce methane (biogas) through fermentation which is used for cooking and lighting.
Firewood, charcoal and saw dust which are used for cooking and heating.
It can be exhausted if its cut at a higher rate than they are being replaced. So it requires management if it has to be sustained

marto answered the question on March 28, 2019 at 08:37

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Briefly discuss the types of Renewable sources of Energy.

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