The effect of a permanent magnet on ventilation of an air duct through compost has been investigated numerically. Some composts yield heat over in the fermentation process. This exothermic reaction produces a considerable amount of heat, which could be a potential heating source. Fermentation reaction requires ventilation, sufficient supply of oxygen, and exhaust of metabolized diamagnetic carbon dioxide gas. Continuous and forced air supply is more efficient rather than the conventional manual turn or stirring as ventilation means. In magneto-aero-dynamics, the magnetizing force acting on a paramagnetic oxygen gas is applied to enhance air flow, heat, and mass transfer. In our research, the enhancement of the air flow through air ducts of various sizes has been numerically investigated by applying a permanent magnet on an air duct. Numerical results show that a permanent magnet enhances the air flow, where we obtained a maximum inlet air velocity of . The application of a permanent magnet to an air duct is useful for compost heating system, a promising alternative energy system.
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e-mail: toriyama-harumi@ed.tmu.ac.jp
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December 2010
Research Papers
Ventilation of Compost Heating System by Permanent Magnets
Harumi Toriyama,
Harumi Toriyama
Department of Mechanical Engineering,
e-mail: toriyama-harumi@ed.tmu.ac.jp
Tokyo Metropolitan University
, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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Yutaka Asako
Yutaka Asako
Department of Mechanical Engineering,
Tokyo Metropolitan University
, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
Search for other works by this author on:
Harumi Toriyama
Department of Mechanical Engineering,
Tokyo Metropolitan University
, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japane-mail: toriyama-harumi@ed.tmu.ac.jp
Yutaka Asako
Department of Mechanical Engineering,
Tokyo Metropolitan University
, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, JapanJ. Energy Resour. Technol. Dec 2010, 132(4): 041802 (8 pages)
Published Online: January 6, 2011
Article history
Received:
December 1, 2009
Revised:
November 15, 2010
Online:
January 6, 2011
Published:
January 6, 2011
Citation
Toriyama, H., and Asako, Y. (January 6, 2011). "Ventilation of Compost Heating System by Permanent Magnets." ASME. J. Energy Resour. Technol. December 2010; 132(4): 041802. https://doi.org/10.1115/1.4003076
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