Introduction to solar energy
Sun is the primary source of heat and light, all living things need sunlight for it's survival, we are getting various forms solar radiations like UV radiations, gamma radiations,infraded radiations etc, solar energy can be used as various other forms of energy,so, we can use solar energy as alternative sources of energies.In 21st century, obviously we should depend upon alternative sources of energy,because some sources of energy are limited in nature, so it is known non-renewable sources of energy like fossil fuels,by considering these situations, we should depend upon renewable sources of energy like solar energy.
Solar energy be used to run vehicles, in solar lights,in solar traffic signals, in solar water heaters, in solar cookers,plants prepare food by the process of photosynthesis using solar energy etc.
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Applications of solar energy
Solar water heaters
Solar water heaters are really boon to the mankind, which conserves other sources of energy and it is eco friendly, in solar water heater it has solar panels consisting of photovoltaic cells,semi conductors, which are made out of silicon chips. these silicon chips absorb solar energy and help in heating up the water, there is an arrangement of inlet and outlet for water. water has to pass through in these set up of solar water heater.
Solar heating system composed of solar thermal collectors, a water storage tank, interconnecting pipes and a fluid system to move the heat from the collector to the tank, so in this process heating up the water by using direct sunlight, no electricity is required.
we can use this solar water heating system for various purposes like under floor heating, heating swimming pools, energy input for space heating or cooling, storing solar energy for future like for winter season by storing solar heat in the ground.
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Solar energy can be used to run vehicles like solar bicycle, solar cars, solar autos etc, these vehicles proved and it may replace our existing needs to run vehicles ,basically a solar vehicle is a electrically powered by solar energy. the photovoltaic cells absorb solar energy, then which converted to electrical energy.