[Noah's Classifieds] - Advertisements of user sueyx910310

Please register or log in.

Advertisements of user sueyx910310
	Title	Category
add to favorites	3 Things to Know When Installing a Solar Pool Heater Or Solar Spa Heating System	Cottages
3 Things you should know when Looking at Solar Water Heating The advancement in solar thermal heating has resulted in cost effective solar heaters that are almost 94% efficient. This has caused new applications such as solar hot tub heating and much more cost effective hot water heating systems for both pools and homes. Soar Thermal Heating systems compared to Solar Photo Voltiac, are nearly 500% more efficient. As an example the most efficient PV system on the market is only about 16% and cost per Kw is nearly double that of solar thermal. When looking at solar water heating for pools or spas you should consider the following 3 topics before you make your solar investment: Open Loop or Closed Loop solar system Control valve to shut off solar system at night Location Location Location of solar colllectors 1. Open loop or closed Loop solar system is a very important decision especially if you are using salt water or lots of chemicals. Simply, an open loop solar system means the water is circulated directly through the solar system. This means that the chlorine in the water has direct contact with all parts. This type of solar heating system will be the least expensive but will have the shortest life as your may find the chlorine can break down the solar collectors and other parts. PV panel mounting systems are very popular in the international market. Closed Loop systems uses a heat exchanger as a barrier between the solar system fluid and the pool spa water. While this system costs more. The advantages are that you can run the system year round by using glycol or antifreeze. You also will find the life expectancy of the system is greatly increased. 2. Solar Control System- When designing a solar pool system or solar spa, you need to consider water flow. There is no need to circulate the water through the solar system at night. As a matter of fact, this can result in a negative heat loss. A solar control system will have two temperature sensors, one sensor is placed on the output side of the collectors and will measure the heat coming from the system. The other sensor will measure the current temperature of the pool or spa. If the heat output is greater at the spa and the water temperature is less than required (heat demand) then the system will ensure water flows through the collectors. This is done via an automated solar bypass valve system. At nights when the water in the pool is hotter than the solar collector, the control system will ensure the solar collector is bypassed and uses the alternative pool or spa heating system. 3. Location- In order for any solar system to be effective, it needs to be in direct sun light. This means a southern exposure with no shading of trees or buildings. As a rule of thumb the slope angle of the solar system should equal the corresponding latitude where it is installed. A solar swimming pool system should be installed where it receives the maximum exposure for the greatest ROI. see more at: pv mounting system
add to favorites	What Are the Advantages of Solar Energy and Its Disadvantages - 50% to 80% Savings Are Yours	Cottages
The advantages of solar energy are irrefutable, but in any case we should not be afraid to analyze possible disadvantages or flaws, if any. So, when weighing the implementation of solar energy to meet your power needs at home, pause for a moment and ask yourself: What are my expectations regarding solar energy? and What do I want to use a solar power system for? You will spare yourself many disappointments. Technically speaking, solar power systems are improving every day, but their implementation still requires a special commitment on your part, or maybe we could call it a certain enthusiasm for green matters. Some other questions you could ask yourself are: Do I believe that solar power is a feasible response to the fossil fuel energy crisis? Is this really the answer to saving money at home? I think pv mounting systems will develop very well. The advantages of solar energy are many, but it is not the general energy choice yet and requires you to be open minded. We can now examine the specific solar energy advantages and disadvantages in homes and business buildings. Advantages of Solar Energy Solar energy is free and accessible to anyone who chooses to profit from it. The sun sends off its warmth and energy to everyone, to nearly every region in the world. Some places have more sun than others but the sun's energy is not the property of anyone like fossil fuels. Contrary to oil, natural gas and coal, solar energy is a fairly clean and pure combustion. For this reason it does not pollute the environment in any way. Compared to the sun's rays, the exploitation and usage of fossil fuels implies quite a negative influence on the Earth's environment. After you install and use solar power regularly in a whole house energy system you can experience savings of 50% to 80% on your energy bills. Costs of solar energy are not expected to grow in the future, unlike fossil fuel costs that are steadily going up. Disadvantages of Solar Energy The biggest deterrent for most people is the high investment required in advance to install a large solar power system for a whole house, when you have not even begun to enjoy any savings. But if you want to be able to collect solar energy and use it there is no way around investing in solar energy equipment, at least at the moment. This initial investment is why many fossil fuel power plants have not made the switch. It is estimated that the number of years to recoup your initial investment is four to five. Solar energy can be problematic in some areas where large amounts of sunlight are not available. When the climate is mostly cloudy it can be harder to grab systematically the solar energy you need to power your electric system. The first example that comes to mind is Northern Europe, where the sky is often gray. But if you live in this region do not let anyone talk you into believing that you are not able to enjoy the advantages of solar energy. The continuous technical improvements to absorb sun's rays even when we hardly see them are amazing. Anyway, the global picture is quite sunny, if you know what I mean. There are plenty of regions on this Earth blessed by the warm rays of the sun, which are naturally suitable for solar power systems capable of harvesting the sun energy. Some are the Mediterranean basin, Australia, Mexico, and so many African and Asian countries and regions. In the United States, for example, the Southwestern states are great for solar energy because they receive lots of sunlight. Summary of the solar energy advantages and disadvantages To recap, the disadvantages of solar energy are the initial investment and that you live in a rather cloudy climate. Technology takes care of the second, and the first one depends on your personal finances. You can always start small with solar power kits and self-contained solar power systems, which are way cheaper. On the brighter side, the advantages of solar energy are that you can save from 50 to 85 percent in energy bills, it is a clean burning, so to say, and last but not least, the sun and its free energy are not owned by anyone in particular. As we can see, the advantages of solar energy clearly outweigh the disadvantages. Click this link if the many solar power advantages [http://solarpowersystemstoday.com/solar-power-for-homes] excite you. If you want to start small for any reason visit this site to learn about solar power kits and solar lights. Mei Fontana loves to write and spread the word about alternative renewable energy systems. more info: mounting systems
add to favorites	The Shortcoming of Solar Energy	Cottages
Despite the fact that solar energy has been used for many years, the technology is still considered to be generally new. Are you finding solar off grid kit? As people focus too much on advantages, therefore, the disadvantages of solar energy are often overlooked, and many fall pray to difficulties, having to invest a lot of money on a solar array that might not even work properly for one reason or another. If you are truly serious about using solar energy to provide your home with electricity, therefore, you will find that a thorough understanding of its disadvantages is crucial. That way, if you do your research properly, and weigh every point carefully, you will find that you can make the best decisions, and benefit from the numerous positive aspects that solar power comes with. The Contrast between Solar and Other Green Energy Sources Solar power has been successfully used as an energy source for more than 50 years. Its advantages are well-known to those who are even remotely interested in the development of alternate power sources; however, the truth is that, when compared with some other "green" methods of power production, solar power is not considered to be in first place in terms of efficiency or consistency. Its main rivals are: geothermal energy, wind power and hydroelectricity. Wind turbines are only starting to become more popular, and new designs are being developed all the time, so it can be considered as a viable solution for the future. When comparing it with solar energy, wind power is generally seen as being at a similar level. It is more expensive; however, it does have one advantage over solar energy, since solar energy doesn't work at night, for example. On the other hand, wind power can only be harvested in specific locations where the weather conditions are appropriate. This same problem comes up when comparing solar power to the other two energy sources too. Hydroelectricity is somewhat less clean, however, despite the fact that it does not produce direct waste. Geothermal power is extremely beneficial for the environment on the other hand, being comparable to solar energy in this regard; however, solar power is less efficient. Nevertheless, geothermal energy is still being researched, as there are numerous problems with it, because the technology is not yet advanced enough to allow regular people to benefit from it directly, by building their own power sources. In this regard, solar panels really shine, as, despite the cost, they can be much easier to manufacture, and maintenance issues are generally rare. Manufacturing and Buying Costs One of the greatest disadvantage of solar panels is their cost. Both in terms of manufacturing and buying them ready-made, the costs can be quite discouraging. Of course, the investment mostly depends on the size of the household, as well as on the type of solar energy source you want to use. A 1 kwh photovoltaic system can range somewhere between $8,000 and $10,000. When we think of the fact that a family living in a 3-bedroom home requires a system that can provide about 1 to 3 kw, the cost of a viable and generally stable solar panel system can double, or even triple. Solar hot water systems are usually much more accessible, however, requiring an investment of roughly around $2000 to $4000. This is good news for those who would prefer to separate their energy sources, and perhaps use multiple systems for better efficiency. Even better, the price for solar panel arrays has decreased considerably in the past couple of decades. Before that, the costs were more than 5 times less affordable, and the quality was less than acceptable for such an investment. As a result of this progress, many scientists are quite confident that, soon, the price and efficiency rating of solar energy will be good enough to allow the replacement of the conventional power grid, and provide people with a useful, clean and powerful alternative to many of the energy sources known today. Also, if you are up for it, you can buy only the parts, and make your own system based on solar panels. Depending on your needs, you can make it much more economical, at only a fraction of the price that a regular solar panel would cost. While this can be somewhat difficult, with a little work and effort it can be done. DIY Difficulties Of course, if you choose to make your own solar panel arrays, you will likely run into a lot of difficulties, especially if you are not used to building things from scratch. Also, in order to lower the costs, you might have to use lower quality materials that might not last on a long term basis. Manufacturers often emphasize the difference in quality and reliability between a solar panel they make and one that an inexperienced worker may put together. This is, of course, a marketing strategy, as well, and there is no reason why you can't build a solid, viable solar panel. The effort may be too much for some, but if you like doing some good old fashioned work, the odds will be favorable. Location Issues Another difficulty, regardless of the quality of the solar array you use, is the difference between various locations. The main disadvantage in this regard has to do with places where sunlight is not consistently available. For example, in places closer to the poles, during the winter season, the sun rarely even makes its appearance for more than a few hours. This can make it very difficult to use solar panels for consistent energy production. Also, in areas where the weather is particularly overcast, rainy or foggy, solar panels do provide some energy, but the efficiency is significantly reduced, and you may need more than the estimated amount in order to successfully provide electricity for your entire household. Of course, if you live in an area where the rain doesn't fall all that often, and there is an abundance of sunshine almost every day, a solar panel array may well be the best option for you. Depending on other factors, such as the area you have available for it, and the size of the panels themselves, you may be able to achieve excellent results in this case. Pollution and Long Term Inconsistency Solar energy may be clean from a general point of view, however, it is still vulnerable to pollution, as this factor can diminish the efficiency of a solar panel. While most of the newer designs don't have a problem with this, older models can be quite easily affected, as the technology was not so advanced in the past, and the materials used were significantly less reliable. While the solar panels themselves may not pose a threat to the environment, if you are using an off grid system, the chances are high that you need to use lead acid batteries. Their lifespan is much less favorable than that of a solar panel (roughly 5 years for the battery, in contrast with 20 to 30 for the panels). As a result, not only are you faced with additional periodic costs, but the lead and sulfuric acid contained in the batteries can prove to be quite detrimental for the environment. Improperly managed, their use can lead to considerable problems. There are ways around this, of course, as more than 90 % of the materials present in lead batteries can be recovered in the recycling process. What you need to do, therefore, is to ensure that you extend the lifespan of the batteries for as long as possible, and take them to a recycling facility afterwards. Summary Generally, it can be said that there are a lot of disadvantages when it comes to using solar energy as an efficient power source for your home. As we have seen, however, all of these drawbacks depend on the ability of people to determine exactly what they need, and compare the results to their abilities. With a correct assessment of the situation, you may actually be able to come up with a viable solution. There is no reason why you cannot benefit from the positive aspects of this energy source, however, it has to be noted that the technology is still in its early days, and if you want to obtain a good cost/quality ratio, you will have to do a lot of research, and be aware of all the potential issues. However, experts estimate that, in a few years, solar energy will gradually become much cheaper, more accessible, as well as more efficient. Are you finding off grid kit? Keep an eye out for technological advancements, therefore, if you are a solar energy enthusiast, as you never know when a good opportunity may "shine" upon you in just the right way.
add to favorites	How to Work Out the Solar Panels You Need	Cottages
If you are interested in the idea of using free, environmental friendly energy to power your household, and you want to have a solar panel array installed, one of the most basic requirements you need to keep track of is the number of solar panels that you need. There are many factors that would determine just how many you would need to use, and how many you will actually be able to buy. It is very important to develop 10kW Solar Kit?Some of these include the results of your energy consumption target calculations (how much energy your household appliances and devices need in order to function properly), the budget you have at your disposal and the type of solar panel you are using. Also, depending on whether you are considering the purchase of a high-tech solar array or you're thinking of building your own panels yourself out of cheaper materials, the prices may vary. Therefore, the number of solar panels you can put together in an array may be different, and their quality might also have to be assessed. Calculating Energy Consumption If you want to determine precisely how many solar panels you need, it is essential to measure the amount of energy that a solar panel can offer, and compare it with the value that you require. Considering that a normal household consumes about 8000 - 9000 kwh on a yearly basis, and the fact that a $300 solar panel of good quality can only provide about 100 - 200 watts of energy, the number of panels you need to power your entire home may be quite substantial. Of course, depending on your needs, you might not always have to use up so much energy on a regular basis. Especially if you are an environmental enthusiast, and you know how to choose appliances that provide better functionality, while consuming less energy, you might actually be able to reduce that number to half, or even less. Also, if you want to build your own solar panel, you might find that the manufacturing costs can effectively be reduced to under $200 for a standard 36 cell solar panel. Depending on the quality of your homemade solar array, you only need about 30 or 40 panels to provide enough power for your entire home. This number may still be too large, but it can be reduced if you wish to use an additional type of energy, such as wind power. This can offer you more energy on cloudy and rainy days, when solar panels don't operate as well, and reduce the need for panels to half or even less. Use caution, as different types of solar cells will provide a varying amount of energy. You can calculate the energy output easily, however: after you build your DIY solar panel, measure the current and voltage it produces, and multiply them to obtain the watt value. As a result, a small, 6 ampere solar panel that produces 12 volts, for instance, will offer about 72 watts. Now, such a weak solar panel may not provide you with too much energy, but the good news is that there are many inexpensive panels on the market that can offer two or more times as much power, and you don't have to pay more than 300 to 400 dollars for one. A solar array made of 10 to 20 of these panels would, therefore, represent a viable option when it comes to powering a large number of low energy appliances or gadgets. Different Solar Panel Types The rate and efficiency with which solar cells are able to transform solar energy into electricity also plays a part in determining how many solar panels you will need. In the case of panels using monocrystalline solar cells, for example, the amount of sunlight needed for generating a specific amount of energy is far less than in the case of thin film or polycrystalline cells. In 2010, a company that produces high quality monocrystalline solar panels was able to break the world record for solar energy efficiency, producing solar cells that could transform more than 24 % of the sun's rays into usable electrical power. Some researchers even consider that, in a few years, it may be possible to create monocrystalline solar cells that are able to go beyond the 30 % or even the 40 % mark, significantly increasing the efficiency rating of these types of solar cells, and that of solar energy in general. A good example of the energy efficiency that these solar panels can offer would be that a solar panel using a total of 36 monocrystalline cells can generally produce around 100 to 130 watts. This practically means that if you want to get 1 kw (1000 watts), you will need about 10 of these panels. Depending on the quality and brand of the panel, pricing can range between $3000 and $5000 for this plan. In contrast with these results, technologies using polycrystalline cells are barely able to get close to the 20 % limit today, while thin film based technologies hardly provide about 15 to 17 % efficiency. These numbers may conclude the technological superiority of monocrystalline PV cells, but they do not prove that the best decision is to buy such panels. It's true that you will not need as many panels to reach a general output of about 1 to 3 kw in this case, but the problem is that the more monocrystalline solar panels you buy, the greater the price difference becomes. You may also opt for less energy efficiency and a better pricing option in order to save money. In this regard, polycrystalline cells are far better, as they are not as weak as thin film-based technologies, and are somewhat less expensive than monocrystalline solar cells. Budget Issues Now, everyone is usually thinking about budget issues when it comes to buying or manufacturing a solar panel. DIY solar panels are obviously cheaper, however, the quality differences can be great, not to mention that you will need to put a lot of work into it, if you want your new panels to perform properly. If you decide to buy a solar panel, on the other hand, you will already have all the numbers necessary regarding how many watts it produces, and how stable it is. By using some simple math, you can then calculate exactly how many of these devices you need in order to meet your energy target. The main problem here is that there are many brands focusing on offering different types of solar panels based on a large number of different technologies. As a result, you may have a hard time choosing between them, and you will have to look around on numerous websites to find out what past buyers think about any particular product. Most people would believe that about $3000 to $8000 would be enough for a viable solar panel array; however, the numbers might double depending on your needs and the technology you want to use. Fortunately, most manufacturers are already starting to develop better technologies that allow people to buy more efficient solar arrays at a considerably lower price. You have to take all the options into account, however, and avoid clinging to some brands simply because they have a "catchier" marketing agenda. Ultimately, the numbers will show you everything you need to know, and you can make up your own mind regarding which types of panels you should buy, and how many of them you will need. Summary You will often find that the company you do business with may actually provide you with a viable plan when it comes to dealing with energy consumption and solar panel numbers. Based on your budget and the proficiency of the solar power array you require, they can often give you a precise estimate of how much energy you can get from your purchase. Use caution, however, since various brands may at times come up with new technologies that are cheaper and more effective, and would make the designs of other companies seemingly obsolete. You might actually realize then that new opportunities can appear at every step of the way. Are you finding off the grid solar kits? So, if you are thoroughly informed about the factors that determine the quality of the technology used for manufacturing panels, you will find that you are in a much better position to establish how many of them you need yourself, without having to worry about any unknown factors.