Solar mission class 9 powerpoint presentation.pptx

solar mission

1. Solar Mission Akshara, Dhanya , Mithun Harshan , Rohith

2. Topics Introduction Solar energy-Types How can we convert sun rays to energy? Uses and users Advantages Summary This Photo by Unknown Author is licensed under CC BY

3. Introduction The Sun is an extremely powerful energy source, and  sunlight  is by far the largest source of energy received by  Earth , but its intensity at Earth’s surface is actually quite  low . This energy which is generated by The Sun is called solar energy. Solar energy is created by nuclear fusion that takes place in the sun .

4. Solar energy-types Solar energy: R adiation  from the  Sun  capable of producing  heat , causing  chemical reactions , or generating  electricity .  Solar energy is any type of energy generated by the sun. Solar energy is created by nuclear fusion that takes place in the sun. Fusion occurs when protons of hydrogen atoms violently collide in the sun's core and fuse to create a helium atom. It id less expensive and affordable. There are 5 main types.

5. Types: . . Photovoltaic solar energy Solar thermal energy Concentrated solar power Passive solar power Building integrated solar power

6. How can we convert sun rays to energy? Photovoltaic panels: Solar technologies convert sunlight into electrical energy either through photovoltaic (PV) panels or through mirrors that concentrate solar radiation. Solar panels are responsible for generating electricity and in most cases they are located on the roof of any building. Each of these solar panels is made up of a special layer of silicon cells, a metal frame, a glassed casing which is further surrounded by special film and wiring. For maximum electricity production, the solar panels are arranged together into "arrays". This through these solar cells also known as photovoltaic cells, where the sunlight is absorbed during the daylight hours

7. . Uses and users Uses: . . There are two types of active solar water heating systems: Direct circulation systems Pumps circulate household water through the collectors and into the home. They work well in climates where it rarely freezes. Indirect circulation systems Pumps circulate a non-freezing,  heat-transfer fluid  through the collectors and a  heat exchanger . This heats the water that then flows into the home. They are popular in climates prone to freezing temperatures When the sun shines onto a solar panel, energy from the sunlight is absorbed by the PV cells in the panel. This energy creates electrical charges that move in response to an internal electrical field in the cell, causing electricity to flow. On average, a standard residential solar panel with an output rating of around  250 to 400 watts . 

8. Users: . . . . . Most used state-Gujarat Most used country- USA

9. Advantages 1) An energy source that is both renewable and inexhaustible by definition. ... 2) Minimal maintenance required. ... 3) Everywhere gets sunlight.  4) Green until the end of life. 5) Solar systems work in a variety of climates

10. Summary S olar power works by converting energy from the sun into power. It is safe and a greener and economical alternative. Moreover, it can be replenished so it serves as a renewable source of energy. As a result, it does not cause pollution. Thus, we must try to use solar energy more and more to save our planet earth.

11. Thank You Presentation by , Akshara Dhanya Mithun Harshan Rohith