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Harvesting temperature fluctuations as electrical energy using torsional and tensile polymer muscles

Kim, Shi Hyeong (författare)
Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul, South Korea
Lima, Márcio D. (författare)
Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, USA
Kozlov, Mikhail E. (författare)
Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, USA
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Haines, Carter S. (författare)
Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, USA
Spinks, Geoffrey M. (författare)
Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, Australia
Aziz, Shazed (författare)
Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, Australia
Choi, Changsoon (författare)
Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul, South Korea
Sim, Hyeon Jun (författare)
Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul, South Korea
Wang, Xuemin (författare)
Department of Mechanical Engineering, University of Texas at Dallas, Richardson, USA
Lu, Hongbing (författare)
Department of Mechanical Engineering, University of Texas at Dallas, Richardson, USA
Qian, Dong (författare)
Department of Mechanical Engineering, University of Texas at Dallas, Richardson, USA
Madden, John D. W. (författare)
Department of Electrical and Computer Engineering and Advanced Material and Process Engineering Laboratory, University of British Columbia, Vancouver, Canada
Baughman, Ray H. (författare)
Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, USA
Kim, Seon Jeong (författare)
Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul, South Korea
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Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul, South Korea Alan G MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, USA (creator_code:org_t)
Royal Society of Chemistry, 2015
2015
Engelska.
Ingår i: Energy & Environmental Science. - : Royal Society of Chemistry. - 1754-5692 .- 1754-5706. ; 8, s. 3336-3344
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • Diverse means have been deployed for harvesting electrical energy from mechanical actuation produced by low-grade waste heat, but cycle rate, energy-per-cycle, device size and weight, or cost have limited applications. We report the electromagnetic harvesting of thermal energy as electrical energy using thermally powered torsional and tensile artificial muscles made from inexpensive polymer fibers used for fishing line and sewing thread. We show that a coiled 27 μm-diameter nylon muscle fiber can be driven by 16.7 °C air temperature fluctuations to spin a magnetic rotor to a peak torsional rotation speed of 70 000 rpm for over 300 000 heating–cooling cycles without performance degradation. By employing resonant fluctuations in air temperature of 19.6 °C, an average output electrical power of 124 W per kg of muscle was realized. Using tensile actuation of polyethylene-based coiled muscles and alternating flows of hot and cold water, up to 1.4 J of electrical energy was produced per cycle. The corresponding per cycle electric energy and peak power output, per muscle weight, were 77 J kg−1 and 28 W kg−1, respectively.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Naturresursteknik -- Energisystem (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Environmental Engineering -- Energy Systems (hsv//eng)

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