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roof integrated solar panels

Germany is the #1 user of solar power in the world, their photovoltaic market is much more mature then over here in the U.S. A company named SolarWatt in Germany has developed a “easy in” roof integrated system that can be screwed right into the roof without adding any substructures. The solar panels have an aluminum frame which can be hung on the roof battens by using a tongue and groove connection. These type of “easy in” roof integrated systems shorten installation time which lowers the installed cost for a solar electric system. Also many customers worry that solar panels will void their roof warranty due to the penetrations that have to be made, although roof integrated systems mitigate the risk of compromising your...

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small scale wind turbines don’t kill birds

The royal society of protection of birds (RSPB) have recently made a move that should dispel a big myth about small scale wind turbines. Many people think that wind turbines kill birds even though there have been many studies highlighting the fact that cats kill more birds than wind turbines. The RSPB recently installed a Proven Wind Turbine at a visitor center to show their commitment towards renewable energy to curb climate change. According to the RSPB this wind turbine installation is a great example of how wind turbines and wildlife can co-exist, if the wind turbine is properly installed. The Proven Wind Energy System is installed in conjunction with solar panels and both systems can produce enough power to offset the RSPB’s visitor...

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how much energy will your small wind turbine produce?

Making an investment in a small scale wind turbine to offset your electric bills can be a challenging task, for many customers the main question on their mind is how fast will the investment pay off? To find the answer, everyone considering to install a small wind turbine in their backyard should complete the following simple calculation to figure out how many kWh you’ll be able to generate per year. kWh per year = [rotor area in sq. ft] * [annual average wind speed mph]^3 * 0.085 * OTE The 0.085 number in the equation represents air density and the acronym OTE stands for overall turbine efficiency. The OTE will vary depending on the make and model of the wind turbine, the number can range anywhere between 15% and 25%. I hope this equation will help you make effective decisions when purchasing a small scale wind...

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KACO 02xi grid tie inverter

At the Intersolar North America trade show last week Kaco New Energy had their new highly anticipated 02xi series grid tie inverter on display. The grid tie inverter is well suited for residential and light commercial applications and is offered two sizes, 1500 watts or 2500 watts. The enhancements of the new 02xi series include an improved digital signal processor, a CEC efficiency of 95.5% and integrated AC/DC disconnects. All solar panels on the market are compatible with the KACO 02xi series since it allows both positive or negative grounding. The aluminum NEMA 3R rated enclosure increases the cooling effect which gives the inverter an advantage in hot...

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Schüco ezFlatroof-Light

Schüco USA at Intersolar this week showed off their Schüco ezFlatroof-Light which they claim to be one of the leanest racking systems for quick and simple installations. The racking solution can be used with framed or frameless crystalline and thin film solar panels. The racking solution can be tilted in angles of 7.5, 15 and 20 degrees or any pitch you need to maximize your harvest based on your project site. Schüco developed ezFlatroof-Light to reduce costs of solar panel installation, make the process easier and allow scalability of the base system while maximizing the roof area available for the solar panel installation. The system is versatile enough to be installed on a private residence with a flat roof or a standard commercial flat...

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first liquid cooled LED light bulb

The two major problems with LED lights are they are very directional light source and the LED chips can get hot when operating for a long time which can potentially shorten lifetime if the LED bulb is not cooled properly. Eternaleds introduced the first liquid cooled LED bulb called the HydraLux-4 which uses a fluid inside the LED bulb to not only cool the bulb but disperse the light 360 degrees around the bulb. The 4 watt bulb is equivalent 24 watt incandescent bulb and is offered in two colors, Warm White and Daylight White. By the end of this year the company is expected to release a 8 watt, 12 watt and 16 watt versions for people who want more light output. The HydraLux-4 only cosst $1.75 per year to operate and over the lifetime of the bulb can save up to $157 in electric and replacement costs compared to an incandescent. what do you think about the Eternaled...

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