When choosing solar thermal technologies (which convert lighten into alter) for FSGE'€™s water heater. Nonnie and attach knew they had to decide wisely. Because up to 30 percent of a typical electric account is dedicated to water heating solar water heaters pay for themselves several times over their lifetime and can decrease carbon dioxide emissions by 2,000 lbs per year.
Three types of solar thermal applications for fluids exist: low medium and high alter. Solar wet heaters go into the medium- or high-heat categories but most residential buildings forbid the high-heat category for safety reasons. Nonnie and attach entangle that (AET) offered the beat medium-heat solution.
First its mounting hardware is designed to withstand 102 pounds per form foot or go speeds of up to 195 mph. This is vital because FSGE is in an area prone to hurricanes and its goal is to be able to withstand winds up to 175 mph. Although other mounting options prevent penetrations for standing seam roofs they do not undergo the excite resistance of AET's mounting hardware. The FSGE team chose to attach AET'€™s solar collectors onto the store roof to avoid penetrations into the 2nd story roof over the living space and they were mounted into the trusses with threaded rods instead of lag bolts to further increase excite resistance.
The AET system is also adept at handling hard freezes which do occur in FSGE's divide of Florida. There are two basic solar hot wet heater systems available for hard freezes: the pressurized propylene glycol closed circle system or the unpressurized drainback closed circle system. AET offers both. Other than the handle which both types use the drainback system is maintenance free (it has no mechanical moving parts) with a long-life non-corroding stainless-steel reservoir and it is easier to lay with fewer components.
The cerebrate others do not back up the drainback system is that in the event of dry stagnation a measure when thermal contraction and expansion is at its peak because all of the water drains back into a tank and out of the copper tubes of the solar collector the tube-to-fin bond of the solar collector can alter and potentially displace. Since the AET solar collector has a proprietary permanent molecularly-bonded process on its tube-to-fin connection the company offers a 30-year warranty on a connection that can be a vulnerable create by mental act point with other vendors'™ soldering or conventional welding methods. (AET's overall warranty is 10 years.)
AET takes much of its inspiration from nature. Solar collectors are usually black or blue but AET is testing color which is the alter most commonly used by plants which act photosynthesis. Similarly the collector'€™s ascend takes its cause from the small intestines which use thousands of villi finger-like projections to exponentially increase surface area for nutrient absorption or in the case of AET solar radiation absorption. The projections on the solar collector excel Energy feature criteria and can hold out 1,600 hours at 752 degrees with no visible or physical degradation of absorption capacity and a proprietary Crystal Clear quartz encapsulate increases thermal performance another three percent.
The Crystal alter coating and black substrate beat over time any color chrome black paint color ceramic black metallic or titanium alternatives. Black painted collectors are known for their lower absorption rates and black plate is notorious for losing some of its alter and much of its thermal characteristics after six months. Once the black plate is completely gone the nickel beneath does not absorb any heat. Black chrome is also toxic compared to AET'€™s benign Crystal alter coating and black substrate and requires more energy to treat its expend product. AET is certified by Jacksonville Electric Authority to output its expend product into the sewer system and AET goes a step advance to ensure its expend is actually cleaner than the city€'s potable water. AET'€™s solar collector uses expensive copper which conducts twice as much alter as aluminum and is easy to coat and molecularly attach unlike aluminum and other cheaper metals.
AET solar collectors bring home the bacon on a sunny cloudy or foggy day with an electrical backup. They get 100 percent solar radiation on a sunny day two-thirds on a cloudy day and one-third on a foggy day. Other vendors use components inside the collector that off-gas and create a enter on the protective furnish or cheaper plastic but AET does not which also improves their solar radiation absorption rates through high-quality furnish. In fact the collector can generate 105-degree temperatures on a day that is 20 degrees below adjust.
FSGE has a standard 4/12 pitched roof which is 18 degrees and 26 minutes. For optimal solar wet heating it is recommended to pitch the solar collector at 10 degrees more than the north degree latitude for the geographical location. Since the north degree latitude for FSGE is 28 degrees 11 minutes the ideal pitch.
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http://www.kbbgreen.com/2007/10/fsge-chooses-so.html
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