Solar energy can be used and is used for electricity, central heating, hot water, cooking, for producing salt and even for desalination. Solar energy comes from the sun’s rays. Solar energy is known to be very environmentally friendly. However, when the sun rays enter the earth’s atmosphere it is quite dilute.
Although solar energy is known to be very environmentally friendly it doesn’t only has advantages but also some disadvantages. Let’s discuss some advantages and disadvantages of solar energy.
Let’s start with the main advantage of solar energy. Solar energy is clean. To produce electricity or heat with solar energy you only need the sun rays. There is no need to use fossil fuel in combination with sun rays to produce electricity or heat. You just need a solar energy collector or solar power panels in order to collect solar energy.
Solar energy is cheaper than electric heating. That is another big advantage of solar energy. By just using solar energy you can save a lot of money on heaters. In return you will get lower electric bills and it also means that you don’t have to maintain heaters.
If you live in a remote area where there are no power-lines solar energy can be the solution. There are remote areas where power companies have no means to access your home. Solar energy is a great alternative because it provides you with anything from heating water, electricity, and even cooking.
Another great use of solar energy is for desalination in areas where fresh, drinkable water is scarce. Solar energy evaporates brine and leaves the salt crystals in the bottom of the basin. The water in turn condenses back in another basin where it is now drinkable.
Although all of the above is very useful solar energy also has some disadvantages. These disadvantages also need to be discussed to paint a better overall picture.
The main disadvantage of solar energy is that it’s dilute. This means you have to have a lot of solar collectors installed around your house. Solar energy may be very cheap but the solar collectors are relatively expensive and require regular maintenance in order to work properly and efficiently. If you decide to use solar energy you need to calculate the return on investment in order to know if the investment will be worth it.
One big disadvantage is that you need the sun rays to make use of solar energy. If you are situated in a part of this beautiful planet where there is not much sun light then this could be a problem. In other areas, the sun rays are almost always covered in clouds making solar energy collectors less efficient. You should first know if the sunshine in your area is abundant for the most part of the year. Of course if you live in desert areas like in Arizona or Mexico the sun produces a lot of sunshine for the most part of the year and is ideal for solar energy collecting.
Lastly the sun only shines during the day. Therefore if you need electricity or hot water during the night, like many of us do, it can be a problem. You will need a backup system like the ‘old’ utility grid or you will need to store the electricity for later use. There are battery systems that can store solar energy for later use.
Solar energy is very clean and an alternative to conventional heating and electrical systems. Although this is true it is also good to mention the disadvantages of solar energy. If you are considering using solar energy you must read this first to make a balanced decision….
Thursday, 27 January 2011
Tuesday, 25 January 2011
A Key Element In Solar Panels - Efficiency
While solar energy is most often associated with the production of electricity, heating is also a major platform. While heating isn’t particularly difficult, efficiency in doing so is the key to saving wear and tear on your system.
A Key Element In Solar Panels - Efficiency
The sun produces a ton of energy, but solar panel systems have historically been very inefficient at converting it. With improving technology, efficiency has improved to the point where most panel systems can easily produce enough energy to heat water for the home and pools. There are efficient and inefficient ways to go about this process.
To save wear and tear on your panels, you need to consider a flow control system. Older panel systems tend to take a long time to heat up fluid because water more or less randomly circulates through the system. This is very inefficient because the panels are forced to heat up a much larger pool of water than you actually need. This results in wear and tear, not to mention lengthy waits for hot water.
A control flow system attacks the efficiency problem by reducing the amount of water that must be heated. Most are designed to work on temperature differential strategies. They work by using two sensors. The first is located close the panels being used to heat the water or liquid substitute. The second is located on or close to the liquid return valve into the panel system. Put in practical terms, one sensor measures the temperature of liquid set to leave the panel while the other measures the temperature of liquid coming into the panel.
Flow systems work by waiting for the liquid to rise to a temperature determined by you. Once the liquid meets the temperature, the system turns on the circulation pump and moves the liquid to the desired location. Once the return valve sensor notes the temperature of the returning water is within a particular range of the liquid in the panel system, the pump is shut off. This process allows for faster heating times, more efficiency and less wasted energy.
Solar solutions are coming to the front of the energy debate for many residential energy needs. Countries like Germany are making huge investments in solar platforms and technologies. Solar can be a cost-effective solution for you as well. Just keep in mind that flow systems are a must if you are pursuing solar water heating.
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A Key Element In Solar Panels - Efficiency
The sun produces a ton of energy, but solar panel systems have historically been very inefficient at converting it. With improving technology, efficiency has improved to the point where most panel systems can easily produce enough energy to heat water for the home and pools. There are efficient and inefficient ways to go about this process.
To save wear and tear on your panels, you need to consider a flow control system. Older panel systems tend to take a long time to heat up fluid because water more or less randomly circulates through the system. This is very inefficient because the panels are forced to heat up a much larger pool of water than you actually need. This results in wear and tear, not to mention lengthy waits for hot water.
A control flow system attacks the efficiency problem by reducing the amount of water that must be heated. Most are designed to work on temperature differential strategies. They work by using two sensors. The first is located close the panels being used to heat the water or liquid substitute. The second is located on or close to the liquid return valve into the panel system. Put in practical terms, one sensor measures the temperature of liquid set to leave the panel while the other measures the temperature of liquid coming into the panel.
Flow systems work by waiting for the liquid to rise to a temperature determined by you. Once the liquid meets the temperature, the system turns on the circulation pump and moves the liquid to the desired location. Once the return valve sensor notes the temperature of the returning water is within a particular range of the liquid in the panel system, the pump is shut off. This process allows for faster heating times, more efficiency and less wasted energy.
Solar solutions are coming to the front of the energy debate for many residential energy needs. Countries like Germany are making huge investments in solar platforms and technologies. Solar can be a cost-effective solution for you as well. Just keep in mind that flow systems are a must if you are pursuing solar water heating.
domain.com
Sunday, 23 January 2011
Solar Energy Figures And Statistics
Solar energy is fast becoming one of the more promising alternative forms of energy sources that is out in the energy industry today. The main reason for this is probably due to the fact that its main source of energy, which is the sun, is able to provide over 10,000 times more than the energy that our planet is able to produce. This helps show people that solar energy is one of the best alternative energy sources for the future. However, don’t simply take my word for it. Instead, check these different solar energy figures and statistics and see for yourself if whether solar energy is indeed everything that people are claiming it to be.
Is Solar Energy Systems Financially Viable?
One of the main things that people look at when it comes to alternative sources of energy is whether it is financially viable or not. Getting a solar energy system for your home or work place these days would actually help you save some money on the total cost of your utility bills annually. However, this particular benefit is not necessarily immediate, as there are some other costs that you need to consider. Nonetheless, using solar thermal systems would allow you to get back the total cost within 5 years of installation, and 15 years for photovoltaic panels, after which, you can then enjoy the benefits of cutting down the total cost for your energy consumption.
Does Solar Energy Reduce Cost Of Energy Consumption?
Studies have shown that using certain solar energy systems do reduce the total cost of energy consumption that your home or work place might incur. If done right, you can actually lower your annual utility bill by as much as 80%, which is very significant, especially if you are trying to find ways to save some money.
Also, there are certain programs that allow solar energy systems user to sell back energy or electricity that they were not able to consume to the utility provider, giving you more ways to save money.
Do Sunny Areas Have More Solar Energy Systems?
Although the ideal location to place these solar energy power plants to harness sunlight would be in locations that have an ideally hot climate, some places which does not have that hot of a climate are known to have more solar panels than those which have hot climates. Denmark and Holland, and most of the northern European country, claims that they have more solar panels than the United Kingdom, indicating that you don’t necessarily have to have a hot climate in order to enjoy the benefits of solar energy.
How Much Area Does Solar Power Plants Need?
Most, if not all, solar power plants require a certain stretch of land area in order to house all the solar panels that these power plants need to have in order to properly harness and collect sunlight and solar energy. Depending on the size of the power plant and the solar energy output needed, each solar power plant land area would vary, from 250,000 square meters of solar panels in the United Kingdom, to the 93 million square meters of solar panel in China.
Alternative Energy for the Home
Alternative home solar energy
The movement toward homes that are powered by different energy sources, ranging from wind turbines and solar collection cells to hydrogen fuel cells and biomass gases, is one that needs to continue into the 21st century and beyond. We have great need of becoming more energy independent, and not having to rely on the supplying of fossil fuels from unstable nations who are often hostile to us and our interests. But even beyond this factor, we as individuals need to get off the grid and also stop having to be so reliant on government-lobbying giant oil corporations who, while they are not really involved in any covert conspiracy, nevertheless have a stranglehold on people when it comes to heating their homes (and if not through oil, then heat usually supplied by grid-driven electricity, another stranglehold).
As Remi Wilkinson, Senior Analyst with Carbon Free, puts it, inevitably, the growth of distributed generation will lead to the restructuring of the retail electricity market and the generation, transmission and distribution infrastructure. The power providers may have to diversify their business to make up for revenues lost through household energy micro generation. She is referring to the conclusions by a group of UK analysts, herself included among them, who call themselves Carbon Free. Carbon Free has been studying the ever-growing trend toward alternative energy-using homes in England and the West. This trend is being driven by ever-more government recommendation and sometimes backing of alternative energy research and development, the rising cost of oil and other fossil fuels, concern about environmental degradation, and desires to be energy independent. Carbon Free concludes that, assuming traditional energy prices remain at their current level or rise, micro generation (meeting all of one’s home’s energy needs by installing alternative energy technology such as solar panels or wind turbines) will become to home energy supply what the Internet became to home communications and data gathering, and eventually this will have deep effects on the businesses of the existing energy supply companies.
Carbon Free analyses also show that energy companies themselves have jumped in on the game and seek to leverage micro generation to their own advantage for opening up new markets for themselves. Carbon Free cites the example of electricity companies (in the UK) reporting that they are seriously researching and developing ideas for new geothermal energy facilities, as these companies see geothermal energy production as a highly profitable wave of the future. Another conclusion of Carbon Free is that solar energy hot water heating technology is an efficient technology for reducing home water heating costs in the long run, although it is initially quite expensive to install However, solar power is not yet cost-effective for corporations, as they require too much in the way of specialized plumbing to implement solar energy hot water heating.
Lastly, Carbon Free tells us that installing wind turbines is an efficient way of reducing home electricity costs, while also being more independent. However, again this is initially a very expensive thing to have installed, and companies would do well to begin slashing their prices on these devices or they could find themselves losing market share.
The movement toward homes that are powered by different energy sources, ranging from wind turbines and solar collection cells to hydrogen fuel cells and biomass gases, is one that needs to continue into the 21st century and beyond. We have great need of becoming more energy independent, and not having to rely on the supplying of fossil fuels from unstable nations who are often hostile to us and our interests. But even beyond this factor, we as individuals need to get off the grid and also stop having to be so reliant on government-lobbying giant oil corporations who, while they are not really involved in any covert conspiracy, nevertheless have a stranglehold on people when it comes to heating their homes (and if not through oil, then heat usually supplied by grid-driven electricity, another stranglehold).
As Remi Wilkinson, Senior Analyst with Carbon Free, puts it, inevitably, the growth of distributed generation will lead to the restructuring of the retail electricity market and the generation, transmission and distribution infrastructure. The power providers may have to diversify their business to make up for revenues lost through household energy micro generation. She is referring to the conclusions by a group of UK analysts, herself included among them, who call themselves Carbon Free. Carbon Free has been studying the ever-growing trend toward alternative energy-using homes in England and the West. This trend is being driven by ever-more government recommendation and sometimes backing of alternative energy research and development, the rising cost of oil and other fossil fuels, concern about environmental degradation, and desires to be energy independent. Carbon Free concludes that, assuming traditional energy prices remain at their current level or rise, micro generation (meeting all of one’s home’s energy needs by installing alternative energy technology such as solar panels or wind turbines) will become to home energy supply what the Internet became to home communications and data gathering, and eventually this will have deep effects on the businesses of the existing energy supply companies.
Carbon Free analyses also show that energy companies themselves have jumped in on the game and seek to leverage micro generation to their own advantage for opening up new markets for themselves. Carbon Free cites the example of electricity companies (in the UK) reporting that they are seriously researching and developing ideas for new geothermal energy facilities, as these companies see geothermal energy production as a highly profitable wave of the future. Another conclusion of Carbon Free is that solar energy hot water heating technology is an efficient technology for reducing home water heating costs in the long run, although it is initially quite expensive to install However, solar power is not yet cost-effective for corporations, as they require too much in the way of specialized plumbing to implement solar energy hot water heating.
Lastly, Carbon Free tells us that installing wind turbines is an efficient way of reducing home electricity costs, while also being more independent. However, again this is initially a very expensive thing to have installed, and companies would do well to begin slashing their prices on these devices or they could find themselves losing market share.
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