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10.3390-en15082817 |
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|a 19961073 (ISSN)
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|a Reclaiming Power Potential from Low Temperature Waste Heat by Thermomagnetic Heat Engines
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|b MDPI
|c 2022
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|z View Fulltext in Publisher
|u https://doi.org/10.3390/en15082817
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|a Thermomagnetic heat engines were designed, constructed, and tested, where numbers of gadolinium (Gd) blocks were used to exploit low temperature waste heat. Gadolinium is a rare earth material whose magnetic property changes with temperature, altering between ferromagnetic and paramagnetic. A motion develops in the thermomagnetic heat engine as Gd blocks are exposed to different temperatures causing changes in their magnetic property. A change in the magnetic property of any Gd block is directly related to the resultant torque driving the thermomagnetic heat engine for power production. Among heat engines studied to date, the cylindrical thermomagnetic heat engine was able to develop a maximum mechanical power of 1.1 W at a temperature difference of 45◦C between hot and cold thermal resources. Furthermore, depending on the effectiveness of an electromagnetic generator (EMG) combined with a triboelectric nanogenerator (TENG), the electric power output can be notably improved. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
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|a Electric generators
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|a electromagnetic generator
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|a Electromagnetic generators
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|a Exposed to
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|a Gadolinia
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|a gadolinium
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|a Gadolinium
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|a low temperature waste heat
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|a Low-temperature waste heats
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|a Magnetic properties
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|a Magnetism
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|a Nanogenerators
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|a Power potential
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|a Property changes
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|a Rare earths
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|a Rare-earth materials
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|a Temperature
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|a Thermomagnetic heat engine
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|a thermomagnetic heat engines
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|a triboelectric nanogenerator
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|a Triboelectric nanogenerator
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|a Triboelectricity
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|a Waste heat
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|a Han, H.J.
|e author
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|a Kim, Y.
|e author
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|a Kim, Y.J.
|e author
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|a Lim, S.-H.
|e author
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|a Mehmood, M.U.
|e author
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|a Oh, S.J.
|e author
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|t Energies
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