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Design News, May 2013

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GreenScene Environmental news engineers can use \\\ By Design News Staff German Student Creates Device That Harvests Energy From the Air A German student has designed an energy harvester that derives energy from electromagnetic fields in the air to recharge small batteries and appliances. Dennis Siegel, who is studying digital media at the University of the Arts in Bremen, Germany, outlines the design of the harvester on his website. "We are surrounded by electromagnetic fields, which we are producing for information transfer or as a byproduct," he writes. "Many of those fields are very capacitive and can be harvested with coils and high frequency diodes." Dennis Siegel has created an energy harvester that can be used to harvest ambient energy from electromagnetic fields in the air. Smart App Monitors Solar Inverters A new solar app allows users to directly access live production data from photovoltaic solar inverters through a smartphone or tablet. Known as the Danfoss SolarApp, it works with the company's DLX UL PV solar inverters. "The new DLX product has several unique value propositions, starting with high-frequency isolation and the highest efficiency rating on the CEC website for an isolated unit," Mark Haug, director of strategic marketing and sales for Danfoss Solar Inverters A/S, told Design News. "But new iPhone and iPad apps are also free of charge to the customer, which allows them to view in realtime how the plant is doing using a cellphone." Left: The Danfoss DLX offers 24/7 reDanfoss says the DLX can be mote system monitoring. Right: They are transformer-based string inverters that used with the Danfoss CLX Portal, deliver 97.3 percent efficiency. a universal Internet monitoring system that provides access to key information for customers, investors, installers, and service companies. For more information, go to: http://bit.ly/XnXIfM GREEN UPDATES To take advantage of this capability, Siegel built harvesting devices that can tap into several electromagnetic fields and harvest energy. He says he can gain redundant energy from the power supply of a coffee machine, a cell phone, or an overhead wire by holding the harvester directly into the electromagnetic field whose strength is indicated by a LED on the top of the harvester. For more information, go to: http:// bit.ly/17b3WSd NASA Uses Video Processing to Study Hurricanes, Wildfires Advanced video processing and networking systems deployed on NASA's Global Hawk as part of its Hurricane Severe Storm Sentinel mission are using full motion video (FMV) to provide visual situational awareness for studying hurricanes and wildfires. The Global Hawk aircraft can reach altitudes of more than 60,000 feet and cover more than 20,000 km in 30-hour missions. In a GE press release, Don Sullivan, biospheric science engineer for NASA, said video compression technology is enabling multiple video capabilities on Global Hawk missions. He added that he expects to deploy more units over the next two years. For more information, go to: http://bit.ly/12ciAEY Share your sustainable engineering news with Senior Editor Rob Spiegel at rob.spiegel@ubm.com. Design News | MAY 2013 | w w w. d e s i g n n e w s . c o m –26– magenta cyan yellow black ES245178_DN1305_026.pgs 05.02.2013 22:26 UBM

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