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.
An important, budding technology involving solar energy that’s being used today is photovoltaic (PV) electricity. This is the use of unique materials that convert solar energy into electricity, and this electricity is either stored through the use of DC batteries or it can be used instantly.
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.
It used to be that only space age technology, like satellites and space stations, used photovoltaic panels. They were reliable for their continuous solar energy conversion, and once in outer space, the sun’s radiation is at least 50% stronger than it is on our planet.
People who live more than a mile from an electrical grid are better candidates for solar power use especially those in residential homes. It’s significantly more expensive to install power transmission cables than it is to install a solar panel kit. If you fit this criterion then solar energy to power your home is a smart way to go.
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 is “diffuse radiation”. This radiation is strewn all over the place (as its name suggests). On a cloudy day, it’s the primary radiation source for a solar panel. It’s the same thing if you’re relaxing under a shade tree diffuse radiation is what you’re going to get. Unfortunately diffuse radiation isn’t very strong and relying on it alone for solar energy isn’t 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 set-up to meet your specific needs. 12 volt, 24 volt, and 48 volt DC systems are the most common. The life expectancy of 12 volt solar panels is well over 20 years and they fall in the range of 12-14% efficiency.
One reason that solar power is still considered an “alternative energy source” is due to the high cost of production. The silicon semi-conductor materials are costly, but new materials are being experimented with and they’re geared towards lowering the price of producing solar panels. This would make solar power more accessible to the “average Joe”, and in turn helping save our atmosphere.
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.
Tags: Education, environment, home improvement, how do solar panels work, how solar power works, science, Solar Energy, solar power