Putting Solar Energy to Good Use

Humans have been using the energy of the sun for pretty much as long as humans have existed. Going as far back as 5,000 years ago, people of many different religions used to “worship” the sun. For example in ancient Egypt, the sun god, Ra, was considered to be the very first Egyptian king. The sun has been influential in many other religions as well, such as Hinduism, Buddhism, Zoroastrianism, Mithraism, Roman religion, and the Aztecs of Mexico.

In modern times, what science tells us about the sun is that it is the nearest star to our planet, and without it, life on earth would not be sustainable. From the utilization of the sun’s powers to dry wet clothes hanging on a line to plants using the light from the sun to make food, the sun’s energy is used in many different ways today. In fact, in one way or another, the sun and the other stars are responsible for all of the earth’s energy, including nuclear energy, whose uranium atoms were produced in the ferocity of a nova, or an exploding star. Three more specific ways that the energy from the sun is used today are: solar hot water, solar thermal electricity, and solar cells or photovoltaic energy.

Solar water heaters have been used in the United States since the 1890’s. When they were first introduced, solar water heaters proved to be a vast improvement over wood and coal-burning stoves. However, when large deposits of oil and natural gas were discovered in the U.S., solar water heaters started to be replaced with heaters that burned fossil fuels. Solar water heaters are making a comeback today though. In the state of California alone, there are now more than half a million solar water heaters, which heat water to be used in homes, business, and swimming pools. The way that solar water heaters function is that solar panels containing water pipes are placed on the roof of a building. Then, when the sun hits the panels and pipes, it heats them up.

The energy from the sun can also be used to create electricity. The way that this feat is accomplished is through the use of a highly curved mirror called a parabolic trough which concentrates the light from the sun onto a pipe that runs the length of a central point located above the mirror’s curve. As the mirror is concentrating the light onto the pipe, the pipe becomes so hot that it is able to boil water and make steam, which can then be used to move a turbine to create electricity. In the Mojave Desert of California rows of these solar mirrors are arranged together into what is called a solar thermal power plant. This type of plant has the capacity to generate enough electricity for more than 350,000 homes.

Solar cells or photovoltaic energy is a third way of using the sun’s energy. With this method, sunlight is directly changed into electricity through the use of solar cells, which are also called photovoltaic cells or PV cells for short. First developed in the 1950’s, solar cells are composed of silicon and a special kind of melted sand. Their original purpose was to be used on U.S. space satellites, but they can also be found on many household appliances, such as calculators. When sunlight hits a solar cell, it causes electrons to be knocked loose. The disentangled electrons then migrate towards the treated front surface of the solar cell, which consequently creates an imbalance between the electron count on the front and back surfaces of the solar cell. Electricity is generated when the front and back surfaces are joined together by a wire and the positive and negative sides are connected. The individual solar cells are organized together into PV modules, which are then arranged into groups of arrays. The electrical energy from the arrays of solar cell is then able to be used directly by homes and businesses for lights and appliances. It can also be stored in batteries for later use and some experimental automobiles also function through the use of solar cells. The most common use for solar cells, however, is in satellites in outer space.

Solar Power and Solar Panels

The generation of electricity from sunlight is called solar power. There are two ways that this feat can be achieved: direct with photovoltaics (PV) and indirect with concentrating solar power (CSP).

With CSP, the energy of the sun is concentrated to boil water, which is then used to supply power. Solar power is an intermittent energy source, but a predictable one at that. This means that while solar power is not readily available all of the time, at night for example, it is relatively easy to accurately predict when solar power will be accessible and when it won’t be.

Moreover, technologies like solar thermal concentrators exist that make use of thermal storage via molten salts. This allows them to amass extra solar energy in the form of heat so that solar power will be available during the night time when natural solar power is not available.

Solar power has great potential to be used as a significant source of natural energy. Yet, in 2008, a meager .02% of the world’s total energy supply was provided by solar energy. The most common way of yielding solar power is through the use of solar panels, which can be installed in homes and businesses.

Unlike many other sources of energy, the electricity that is produced by solar panels is both sustainable and renewable. Furthermore, seeing as solar panels do not pollute the air by discharging carbon dioxide or other impurities, they are an energy source that does not contribute to global warming. Installing solar panels in your home or business can be very expensive initially, but in the long run, you will end up saving a lot of money using solar panels instead of the other less environmentally friendly energy source alternatives.

Solar panels will significantly decrease your electric bill from month to month and depending on the size of your solar panel configuration, you could end up eliminating your bill all together. Additionally, in an attempt to promote the use of solar panels, the government frequently will offer incentives for people to use solar panels, such as loans, tax deductions, etc. Plus, if the solar panel configuration that you install ends up generating more energy than you necessitate, you can sell the unused energy to your utility company for a profit.

Another benefit of solar panels is that they are self-sufficient and very low maintenance. After they have been installed, solar panels typically do not require much upkeep and they do not have any inveterate costs. Moreover, with solar panels, you will never have to worry about losing power in a power outage, so the days of losing hundreds of dollars worth of groceries and scrambling to find flashlights will be gone for good.

Being as environmentally friendly and cost efficient as they are, investing in solar panels for your home or business is definitely worthy of strong consideration, especially given the fact that the earth collects more energy from the sun in one hour’s time than the entire world population will utilize in a year.

The Basics on Residential Solar Power

Solar power is basically produced by harnessing the sun’s rays and converting it into electricity. This is achieved through the use of solar panels, which are made up of solar cells. A few years back, residential solar power was not an available option, as it was not seen as a viable investment. However, through the use of technology, more and more residential owners are enjoying significantly lower utility bills and an eco-friendly alternative today.

With the rising cost of gas and oil as well as the growing concern of the environment, people consider the installation of solar panels. There is also the fact that people have grown more conscious of climate change and global warming. Much like solar plant, a residential solar power system can easily supply electricity to the whole household. This is made possible by the use of solar panels, which converts sunlight into electricity.

Some people share a common misconception that installing a solar power system poses a serious risk. However, solar panels have been known to be quite safe and have the ability to produce controlled and steady current. Additionally, the fear of lightning and rain damaging the solar panels are definitely unfounded. Solar panels are designed and built to last and are able to withstand heavy beating.

If you are seriously considering getting a solar power system for your home, there are several important factors that you need to take into account. Firstly, for people residing in the northern hemisphere, it is best to install the solar panels facing south. According to experts, strategic positioning of the panels is important to ensure maximum efficiency. Keep in mind that panels are installed in a fixed position and do not have any tracking equipment to follow the sun. Another important consideration is having ample space for the solar equipment, especially if you are planning to use the solar energy in heating water.

Of course, the great way to ensure you get the best out of your residential solar power system is getting professionals to install it for you. While it is true that this may have been additional cash expense on your part, unlike any other house appliance, solar systems have important considerations that would be best handled by professionals.

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Know More about Solar Energy Panels

Have you long been wondering how energy can be generated by the sun? If so, you may want to research more about solar energy panels. If you’re interested in learning, here’s a brief overview to help you begin gaining knowledge about solar energy.

Solar energy panels gather the free and natural energy from the sun and continuously work to convert it into electricity. On the surface of the panels, there are photovoltaic cells, also known as solar cells, which are arranged in a grid-like pattern. The cells collect sunlight during daylight hours and convert it to electricity. The panels can be constructed using crystalline silicon or a more expensive material like gallium arsenide.

The quality of the solar panel has a great effect on the amount of power that it can produce. This can also be affected by the amount of time that the panel has been in use, as well as the technology and types of materials used to construct them. When you plan to buy these panels, consider its dollar to watt ratio more than its physical appearance and size.

Rather than looking at the overall cost of the panels, the value of solar cells can be compared by measuring the dollar to watt ratio. The best deals that you can find these days are about $4.30 per watt. When you have a panel that is 50 watt, its total cost may be about $215. Keep this in mind when you assess how much the solar cells and panels should cost.

If you want to get do-it-yourself panels, the best way to go about it is to learn about the setup. First, download manuals online. Then, purchase the necessary materials to build it. You can also watch tutorial videos to see the installation steps.

Solar energy panels and other essential mounting accessories can be purchased online. Just make sure you understand all terms and conditions before buying.