Alternative Energy That Shouldn’t Be Alternative Solar Energy How Do Solar Panels Work?
Solar energy has been around for awhile, but recently it’s been recognized as a viable source to keep our environment in check as far as noise and air pollution go. For some, solar energy is a difficult concept to grasp. Lawn decor and calculators are prime examples of some widely used solar powered gadgets, but the looming question for consumers has been, how do solar panels work?
Solar panels are made from special materials that absorb the sun’s rays and turn them into electricity that can power all sorts of electronic devices. Devices that we use electricity for everyday without thinking twice about could be powered by solar panels.
In today’s world, we’re using a growing technology called photovoltaic (PV) electricity. Special materials are used to turn the sun’s energy into electricity and it can be used immediately or stored in DC batteries.
These materials have been recently developed and they release electrons when prompted by sunlight. Another name for a photovoltaic panel is a “direct energy conversion device”. All of these effects take place on an atomic level without any moving parts.
Historically, only space age technology used photovoltaic panels. Space stations and satellites used them because they were a reliable source for continuous solar energy conversion. The extra bonus that using them in outer space has is that the sun’s radiation is at least 50% stronger than it is here on Earth.
Those living far from an electrical grid, more than a mile, are more likely to use photovoltaic technology, especially in residential homes. Power transmission cables cost way more to install than a photovoltaic power array would. If you’re a notable distance from an electrical grid, then it may be a good idea to consider solar energy for your power source.
But still, the looming question is “how do solar panels work?” Well, solar energy is made up of two kinds of radiation. One is called “beam radiation”. Beam radiation can be visualized by imagining direct sunlight on your skin while at the beach on a clear, sunny day. These cloud-free days make a major contribution to solar energy being gathered by solar panels, but the solar panels need to be strategically placed to harness the most sunshine possible.
The other kind of radiation from the sun is called “diffuse radiation”. This shouldn’t be relied on for the sole energy to be absorbed by your solar panels. This is what we feel on an overcast, cloudy day or if chilling out under a shady tree. To rely on this type of energy from the sun as your main source of sunlight is far from practical.
So, with this being understood, a bright and sunny location is key for solar panels to work effectively. Beam radiation is very important and most of Western America fits this bill. However, northern climates and coastal states pose a bit of a challenge since typical weather there consists of a lot of clouds and rainy days. Those regions aren’t prime candidates for 100% solar reliance.
Solar panels can be built to meet special needs. 12 volt, 24 volt and 48 volt DC systems are the most popular. 12 volt solar panels can survive for over 20 years and are about 12-14% efficient.
Today’s production of solar panels consists of using supremely pure silicone semi-conductor materials. This is primarily what makes the use of solar power so expensive. Luckily there are new materials in the making and they’re particularly geared toward lowering the cost of production, thus lowering the cost for the consumers. Cadmium Telluride based solar panels are an example of new solar energy technology, and if these materials are successful in the final outcome then the price of solar panels should greatly decrease, making our environment that much cleaner as more and more people convert to solar power.
You’ll want to assess your weather patterns as well as your local utility rates before making a final decision as to whether or not to install a solar panel system at your residence, but the benefits to the environment truly outweigh the monetary aspect. The decision is much simpler if you intend to use solar merely as a backup plan. Energy independence is a common goal for all. It helps the environment in so many ways that simply can’t be ignored.
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