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The Power of Solar Energy
Monday, May 26, 2008
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Hello once again! Today is the boys turn again! Today we shall continue talking about energy =D
Solar Energy Is an energy from the Sun in the form of radiated heat and light Solar Power refers specifically to the conversion of sunlight into electricity by photovoltaic, concentrating solar thermal devices or various experimental technologies.
Ways to use the power of solar energy 1. Thermal Collectors to warm water and heat up buildings 2. Solar Sails to convert sunlight force into motion 3. The use of Photovoltaic Cells (aka Solar Cells) to convert sunlight directly into electricity
A Photovoltaic Power Plant
Photovoltaic (PV) has been mainly developed for small and medium-sized applications, from the calculator powered by a single solar cell to the PV power plant. For large-scale generation, concentrating solar thermal power plants have been more common but new multi-megawatt PV plants have been built recently. Other solar electrical generation technologies are still at the experimental stage.
Pros of Solar Energy 1. It is an renewable source of energy
Cons of Solar Energy 1. It is way expensive than fossil fuels (6 times more than buying electricity from power company) 2. Sun is not always shining and need to store sun's energy for cloudy days 3. It is 15% - 20% efficient
