Uses of Solar Energy, Important, Advantages and Disadvantages, Types, Solar Energy Project (For CBSE, ICSE, IAS, NET, NRA 2022)

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Advantages and Disadvantages of Solar Energy

Advantages and Disadvantages of Solar Energy
Sr. NoAdvantagesDisadvantages
1.Easy to maintain as the maintenance cost is low.Requires a lot of space
2.Less electricity billCauses pollution
3.Development of technologyNot cost - effective
4.Renewable source of energyEnergy storage is expensive
5.Wide application

Types of Solar Energy

Solar energy can be classified into two categories depending upon the mode of conversion and type of energy it is converted into. Passive solar energy and active solar energy belongs to the mode of conversion and solar thermal energy, photovoltaic solar power and concentrating solar power.

  • Passive solar energy: This refers to trapping sun՚s energy without using any mechanical devices.
  • Active solar energy: This uses mechanical devices to collect, store and distribute the energy.
  • Solar thermal energy: This is the energy obtained by converting solar energy into heat.
  • Photovoltaic solar power: This is the energy obtained by converting solar energy into electricity.
  • Concentrating solar power: This is a type of solar thermal energy which is used to generate solar power electricity.

Solar Energy Project

  • Solar energy – the experiment on the efficiency of the solar heating working model is one of the easiest science experiments that you can prepare in your school fair science project. This working model is quick, simple and very informative.
  • The result may vary if the project is performed outdoor due to the wind and weather condition, so it is recommended to conduct the experiment indoors.
  • In this solar heater project, use reflectors to concentrating the solar energy in one small place to collect and store heat energy. In this experiment, you will see the efficiency of solar energy.
Solar Energy Project

Materials Required

  • A wooden stand
  • Thermometer
  • A concave or converging mirror
  • Tube to flow liquid.
  • Black paper

Procedure

  • Mount the wooden stand
  • Roll pieces of black paper around the tube.
  • Attach the tube in the concave mirror in a way where the sunlight concentrates in one direction.
  • Fill the tube with tap water
  • After 30 minutes record the temperature of the tube.

Observations

To calculate the efficiency of the concave mirror solar heater, you can divide the temperature increase by the direct sunlight. Eventually, the temperature of the water increase after 30 minutes as the heat is transferred through the concave mirror and concentrated on the tube.

Uses of Solar Energy

  • Water heating: Solar energy is used to replace electric heaters and gas as efficiency is more with
  • Heating of swimming pools: Solar blankets are used to keep the pool warm. The other way is by using a solar water heater to keep the water warm.
  • Cooking purposes: Solar cookers are used for cooking food. Solar energy is used to heat, cook and pasteurize the food. A solar cooker consists of an elevated heat sink such that when food is placed in it, it gets cooked well.

Questions

What Are Solar Cookers?

Answer:

Solar cookers are devices that use sunlight for the drying or cooking of food. These devices can also be used for pasteurization. Common types of solar cookers include panel cookers, reflector cookers, and box cookers.

What is Solar Distillation?

Answer:

Solar distillation is a process that can be employed to convert brackish water and saline water into potable water. This can be done with the help of a solar still.

What is an Example of Solar Energy?

Answer:

Example for solar energy are solar cells, solar cooker, solar light, solar car, solar inverter.

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