An Introduction To The Solar Water Heater

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							Presented by Daniel Toriola
Solar hot water systems produce clean, non-polluting energy. A single hot water system can offset the equivalent of approximately 40% of the carbon dioxide emissions of a modern passenger car. Click here to know more

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An Introduction To The Solar Water Heater By Mike Cubert

The solar water heater of today is as equally effective as water heaters powered by more conventional power sources, namely: gas and electric. A solar hot water panel can heat your home’s water to temperatures of up as much as 140° F. There are two kinds of solar water heater – passive and active. Both collect radiant heat from the sun into a solar hot water panel, and both can serve much of any household’s hot water needs, while at the same time, both can cut back considerably on energy costs. An active system circulates water (or other heat-transferring fluids) through a solar water pump, while a passive system circulates the liquid(s) through use of a process called natural convection. Many factors influence how much hot water a solar water heater can provide, most particularly: • the type and size of solar water heater used • the climate at the site in question • and the quality of the site as regards solar access Whichever type of solar water heater system one uses, both utilize certain similar components, most notably: a collector and a storage tank. The most common type of collector is a “flat plate” solar hot water panel – a weatherproof, insulated box made of aluminum or other metals that holds, beneath one or more transparent covers, an absorber plate. When sunlight streams into the box, its heat passes through the transparent cover or covers and is soaked up by the dark plate which then transfers that collected heat through the heat-transferring fluids that flow through or past it. A more expensive but often more powerful alternative to the flat plate solar hot water panel is a concentrating collector. These have the potential to produce much higher temperatures than flat plate panel solar water heater systems, although on cloudier days they can actually be less effective than their more economical counterparts. Though storage tanks are not a required component of solar water heater systems, without them one
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can only utilize the solar power available in that given moment. With a storage tank, on the other hand, the solar water heater preheats the water and the tank maintains its temperature until the hot water is needed. A typical storage tank will hold enough heated water to provide for a single day’s supply. There are both 1- and 2-tank solar water heater storage tanks, the first housing its own backup electric heating element to reheat cooled water on cloudy days and during the nighttime, the second feeding into a conventional electric or gas water heater. If you’re considering installing a solar water heater of your own, you may be able to get a free energy audit to determine the potential cost savings you could reap. Whether you conduct one yourself or have it done for you, the energy audit must take certain factors into consideration, including: • the ease or difficulty you’ll have routing ducts or pipes from the ground floor or basement to the roof; • whether sections of the wall will need to be opened up; • if there’s room on your ground floor or in your basement for a storage tank and how you’ll be able to load it in (ie the width of stairwells and doorways) and set it in place; • if your roof is accessible enough to install a panel on it and, if not, whether you have an appropriate site on the ground to put it; • how well and how sturdily you can fasten your collector’s supports to your roofing materials (for example, clay tile and slate can be more difficult to work with); • how well you’ll like the aesthetics of the system once it’s in place. For best results with your solar water heater: • aim the solar hot water panel “true south” (as opposed to compass south); • tilt it upward at a right angle to the sun; • avoid shade (particularly between 9 am and 3 pm when the sun’s rays are usually hottest); • have a backup system in place for periods of excessive use and for off-peak solar accessibility hours. A solar hot water panel installed properly should perform well for 15 to 20 years. And a solar water heater requires far less maintenance than its more conventional counterparts. Solar power can save you a lot of bucks and it really looks cool! Visit our Solar Home section for ideas to save money on your energy bills. http://solarpanel.biogreenlife.com/category/solar-home/

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How Solar Water Heaters Work to Save You Money By Stephen Clayton

Like the name implies, solar water heaters use energy from the sun to heat water. Initially, the cost of a solar water heater is high, but it can save you thousands of dollars in the long term. In this article, we'll discuss the costs associated with solar water heaters, how they work and how to install them. While solar water heaters are no longer supported by tax credits, they have become considerably more reliable, less expensive and more efficient than the popular models of the 70s and 80s. For example, a moderate climate system that's capable of heating water for an entire household can be installed for anywhere from $2000-5000, making solar water heaters very competitive when compared to traditional electric and gas heaters. What's the Annual Tab? Typically, a solar water heating system has an annual operating cost of only about $50. Meanwhile, a traditional gas or electric water heater will cost you $500 and more - especially those that heat up the water all night while everyone sleeps. Essentially, solar water heaters work by serving as a preheater for a conventional storage or on-demand water heater. They even work well with on-demand water heaters that have temperature adjustability. Because the solar system preheats the water, the extra temperature boost required by the on-demand heater is low and people who use them can get a high flow rate and lots of monthly savings. Installation Considerations Those of you thinking of installing a solar water heater will have at an advantage if you have a south-sloping roof. This will make installation easier and your heater will run more efficiently. Most cold-climate families use solar as a three-season system and then fall back on a traditional water heater during the dark winter months. Before installing a solar water heating system, always look for a qualified installer and dealer who can design and size your backup system. Ask about their certifications, and request referrals from past customers. This will be a fairly expensive job, so you don't want to be shy about insisting upon an experienced installer with positive customer feedback. Thinking Ahead You should also start planning now. Like most people, we don't think about replacing our water heating system until it actually fails and hot water becomes unavailable for several hours. In fact, depending on the design of your home water pipes, the main water valve to the entire house may need to be shut off until the water heater is replaced. Then in those unplanned emergency situations, we wind up rushing out and putting in whatever

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Presented by Daniel Toriola
system we can get. Instead, take the time to research different solar options, find the system that fits your energy needs and plan ahead to replace your existing water heater before it fails. Remember, most water heaters have a lifespan of about 10-15 years, so be prepared. The energy savings alone could pay for that new solar water heater by the time the year is up, and you'll be happier knowing you're polluting the earth just a little bit less. For info on home energy savings ideas, see http://www.energysavingsoptions.com, offering insights on energy cost cutting measures, such as garage door insulationhttp://www.energysavingsoptions.com/garage-door-insulation.shtml, portable furnacehttp://www.energysavingsoptions.com/portable-furnace.shtml and many more!

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