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EETE SEPTEMBER 2012

Turning waste heat from industrial piping into electrical energy By Josh Moczygemba Marlow IndustrIes’ everGen Powerstrap is a thermoelec- difference between the pipe wall and ambient air. They have a tric-based energy harvesting solution that produces multiple maximum operating temperature of 230°C and are sealed for watts of power by conversion of waste heat from industrial pip- environmental protection. the clamping straps provide a geo- ing directly into electrical energy. this product provides remote metrical transition from the round exterior pipe wall to the flat power for wireless sensors, wireless transmitters, actuators, teG surface. the clamp attaches with a compression tech- and controls in large industrial, chemical, oil and gas infrastruc- nique that requires no modifications to the pipe wall. Straps are tures. This energy harvesting solution can be customized to fit custom sized based on pipe diameter. the heat sinks dissipate any pipe diameter and pipe orientation, without modification to heat to the ambient environment, they are typically made of existing pipeline infrastructure. aluminium with anodized coatings. Power output is proportional to the temperature difference from the pipe surface to ambient, and the number of straps Design methodology employed in the application. the everGen Powerstrap is Maximizing power in the everGen P owerstrap system requires composed of three main components: Bi2te3 thermoelectric a balance between the thermal and electrical system design. generators (teGs), anodized aluminium clamping straps and Thermal optimization starts by defining a thermal load resis- natural convection heat sinks. tance ratio (m). the teG modules produce power from the temperature Josh Moczygemba is Power Generation Product engineeringCircularConnectorsAd-EETimes_Layout 1 8/22/12 2:25 PM Page 1 Manager at Marlow Industries - www.marlow.com Circular Connectors Our vertical integration gives you custom MIL & Hi-Rel connectors FAST! • Custom EMI filtered and unfiltered connectors • We make our own planar and tubular capacitors, shells, shields, seals and grommets • Vertical integration means higher quality and the industry's shortest lead times (8-10 weeks, std) • Filtered connector styles include MIL-DTL-38999, MIL-DTL-83723, MIL-DTL-26482, MIL-DTL-55116 and MIL-DTL-24308 • Our EMI expertise gives you a better filtered connector • 100% testing for critical electrical parameters • Harnessing products to IPC-A-610 and J-STD-001 Check out our new Specialty Connector Video @ SpecEMC.com/specvid Call +49-9122-7950or visit apitech.com/eis www.electronics-eetimes.com Electronic Engineering Times Europe September 2012 21


EETE SEPTEMBER 2012
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