Posted by admin on Jan 13, 2014 in Posts
We live in a habitat where the conventional, non-renewable resources of energy like natural gas, coal, wood, oil are dwindling, and so, there is an urgency and need for alternative ways to utilize energy for our use. Thus, powering solar water heaters are very important. Solar water heaters are rapidly becoming an increasingly cost-reductive alternative to conventional types of water heaters. They are also very convenient in usage as they can be used in any climate and weather and are governed by the energy of the sun, as an energy source, which is available free of cost to us, whereas everything else has become a commodity. Solar heaters that are built for residential need, generally use storage tanks and containers for collection. There are two kinds of solar heating systems for heating water: these are the working (active) and dormant (passive) systems. The active system consists of circulating pumps, which controls the system, but the passive system does not embrace any such mechanism. The active solar water heating system comprises of two types: with direct and indirect systems for circulation. The previous one is helpful in those climates and weather where it freezes rarely while the other is effective in places inclined to freezing temperatures, like cold countries. Considering for the long term, the passive water heating system is less expensive, lasts for a longer period of time, and requires low maintenance but, it is usually not so efficient contrary, to the active system. Solar water heating systems normally have a back-up system for the solar energy, which makes it a usable item during the reduced solar energy and also, during increased demand. It is also effective in times of cloudy days. You must decide on the system to use, considering climate conditions, reliability, budget, and household demands. You should think and consider your geographical location before deciding on setting up solar water heaters. Your residence must get a regular amount of sunlight, which should be enough to make the system work. You should contact developing solar heater contractors to provide analysis for solar site for customer needs. Also, you need to consult if you have doubts regarding the sufficient amount of sunlight. Also, one more thing to consider is the requirement of the amount of hot water in your daily...
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Posted by admin on Jan 13, 2014 in Posts
People from all over the world want to know whether solar water heaters are worth its price as the initial costs still remain high for a medium budget family. The best thing about this is that they can be used anywhere and are eco-friendly. A few things that one may want to know before going for a solar heater are discussed in this article. Solar water heaters are an efficient and innovative source of hot water as it completely removes the dependency from the cost of your traditional water heater. The heater consists of solar panels or the collector tubes which receive energy from the sun to heat up the water flowing through it. The panels are generally set up on the roofs to have the maximum sunlight possible. Solar water heating (SWH) systems comprise of solar collector and storage tanks in which the process of water heating by using solar energy is done. Mainly there are two different types of solar water heating (SWH) systems: active and passive. Active systems comprise of circulating pumps and controls but passive is not provided with any pumps. Active solar water heating systems are more efficient as compared to Passive solar water heating systems and hence are little more expensive. In comparison to active systems, passive solar water heating systems are typically less expensive, but they’re generally not as efficient. Nonetheless, passive systems are more reliable than active systems as they can work for a long duration of time. We can enjoy the facility of hot water without spending any sort of money, and we do not have to pay any bill as well to get hot water as soon as a person installs a passive solar system. The heat, which is coming, from the sun can be used to make your water hot and by this you can even save your current bills. There are many applications where we can use solar energy. A person can use it to heat up swimming pool water during cold weather and even helps to regulate the aquatic life where it helps to maintain a decent temperature throughout the year. Accompanying so many benefits, a solar water heater always proves to be a good investment with cost savings for a long time. It will also aid to reduce dependency on power grids and a small reduction in the country’s carbon footprint and making the earth a better, cleaner and happier place to...
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Posted by admin on Jan 11, 2014 in Posts
What Is a Solar Water Heater? – The Types and How They Work The solar water heater is an innovation which allows us to utilize the free energy of the sun to fulfill our water heating needs. They have the reliability to be used in any climate condition and anywhere, where the sun rays fall. It can easily satisfy the hot water requirements for a family of four to eight. A solar water heater uses direct sunlight instead of electricity to heat water and supply directly to our taps. It is the best alternative one can find as it uses zero energy and is maintenance free equipment. The basic working principle of a solar water heater is simple. It has a solar collector in which cold water is spread out or sent via pipes the sun rays fall on these solar collectors where it gets concentrated and can take temperature as high as 140 degree Fahrenheit. The two basic parts of a solar heater are an insulated water storage tank and a solar collector. The storage tank is similar in design to a tank type electric heater and performs almost the same functions. The solar collector is the one which heats the water and moves it up into the tank. The hot water is either collected in a storage tank or sends directly to taps for use. Sometimes there is a possibility of overheating of water. The tank drains the warm water so that the whole system can be secure from damage. A solar power water heater can basically be categorized into “Active” and “Passive” systems. The Active system uses storage tanks, electric pumps, reflecting mirrors and is more costly than the Passive one’s. An active system is most commonly used where it is cold all through the year and the temperature rarely goes above 15 degrees. To transport water, the active system uses small electric pumps which are generally run by solar powered panels. Those solar panels always should be at an angle facing the sun to generate the maximum heat and efficiency. The passive system depends upon the natural tendency of hot water to move up the pipes so that the warm water is collected in a tank situated above. They are suitable for most of the houses and demand less structural considerations and cost. One more thing to consider is the hot water requirements of the household, and one should buy the optimal sized tank for that...
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Posted by admin on Jan 11, 2014 in Posts
Earth has provided us different sources of energy, which can be utilized to a great extent if we have the technical know-how. One of the energy sources is the sun, which has huge potentials. It’s completely free and can be used to fulfill all our water heating needs. Solar water heaters exactly do the same thing. Basically, there are two kinds of solar water heaters, the active and the passive type. The only difference between them is the way the liquid is circulated inside them; an active solar water heater consists of circulating pumps and controls, whereas a passive is simpler in design and working. This article will provide detailed information about Active solar water heaters. Active solar water heaters are of two types viz. Direct and indirect. The difference between them is the procedure of heating water. Both of them consist of an insulated tank to store water and a solar collector. In direct system, water is pumped into the solar collector on the roof. The solar collector looks like a solar panel, located on the roof of the house where it can access the maximum amount of sunlight. It is made of various materials and come in a variety of setups, each having unique abilities. When the water is moved into the collector, heat is transmitted from the collector to the water. The water then moves into an insulated tank, from where it can be used for daily errands. During this process the water is heated outside the house, this system is best suited for areas where the temperature doesn’t go below freezing. Another type of the active system is known as the indirect transfer solar system. Here, the water gets heated by exchanging heat with a heat transfer fluid which runs inside the tubes. In place of water, the heat transfer fluid runs through the solar collector and after exchanging heat, water is then transferred into the storage tank. This method is very efficient in colder weathers, as without the water actually coming into contact transfer heat to the water. The water doesn’t need to move to the roof as it can freeze when the temperature is sub-zero. As solar water heaters can save lots of energy and hence costs on electricity bills, they can completely pay for themselves in some 4 to 5 years, after which it will provide nearly free hot...
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Posted by admin on Jan 11, 2014 in Posts
There are two types of solar water heater available for you. Stand alone heater, which supplies all the hot water to your home, is the first type and the second; you can employ it as a pre-heater as it heats the water passed through your existing heater. The stand alone heater usually comprises of a reservoir which stores the heated up water. Pre-heater is different from the existing water heater considered to be its reservoir. Solar water heater comprises of the heat exchanger which is actually used to heat the water from the heat of the sun. Heat exchangers are available in various designs and are used all over the world since it is the key element of the solar heater. Stand alone heater usually consists of a storage tank or reservoir with a heat exchanger and hoses or tubing to combine and connect them. One way valve is provided in some applications so that it can stop the flowing of cold water back into the tank. Due to this some systems have the pump to prevent this flow and make it pass through the heat exchanger. But, if a system is installed properly then there is no necessity of a pump since it can be overcome by the natural occurring convective current. But, in case, if in your system a heat exchanger cannot be placed on the same level as the storage tank is placed due to non-availability of space, then a pump is necessary to circulate it into the system. For such system, you can use a 12 volt pump which is powered by solar panel. It does not require any battery to run since solar heater works on sunlight as solar panel does. The pre-heaters types are connected to the cold water supply line to your existing water heaters. It makes an easy job just to preheat the cold water coming into your heater. This saves energy and pain of your bill by providing hot water to your existing heaters whenever necessary, as sometimes during cloudy days your solar heater may not work. This consists of a heat exchanging unit tied up with cold water supply and water heater which discards the need of a pump. There are many provisions when these heaters are off during winter to avoid damages of outside parts, which are caused from...
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