Using solar energy has become one of the best energy-saving techniques used by many countries today. In most commercial and residential industries, you may probably see large flat modules that are made of photovoltaic cells that are laid facing the sun in their front or back. These are known as solar panels, the equipment used to gather solar energy from the sun during the day to generate and supply electricity.
As the number of people who are using solar panel increases, more and more people have also begun to research the science behind how solar panels work. The solar panel is basically made up of wafer-based silicon cells or silicon, which collects the heat energy from the sun. This heat energy is known as photons. Photons are created in the center of the sun as atoms fuse together. It takes a million years for photons to work its way to the surface of the sun. Once it is free, it travels through space so fast reaching the earth in 8 minutes.
When the silicon is stripped down, it transmits electrons converting the heat energy into electricity. The charged silicon carries 8 electrons. Once these electrons are combined with photons, the solar plates combine through the conductive wires allowing the current to pass between two panels.
The conductive wires are interconnected to each other and are made up transition metals, such as silver and copper to allow electricity to pass. Each electrical connection is made in series to achieve a specific voltage. According to surveys, the best achieved sunlight conversion rate is 20% generating between 75% to 100% power in homes and other commercial industries.
Listed below are some advantages that you can benefit using solar panels as source of electricity.
- Provides free energy, thus allowing you to save money on you electric bills
- Creates a hedge against electric cost inflation of nearly 7% per year
- Increases the value of your home
- It is environment friendly as it does not produce any pollution
There are several solar panel designs. Most of the modern solar panels today include concentrators. These are lenses that focus the light to enable the use of cells with high cost per unit area. Some designs split up the light into different wavelength to cover an entire solar range, thus preventing solar energy to get wasted. The energy density of a solar panel is measured through the peak power output per unit of surface area, which is usually expressed in units of watts per square foot (W/ft2).
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Louise Collins writes articles for http://www.plumbingcareer.co.uk/ about renewable energy sources. Finding the best solar panels and installers can be difficult so it is important to do your research first.
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