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Energies 2017, 10(5), 603;

Volume and Mass Measurement of a Burning Wood Pellet by Image Processing

Energy Network Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea
Research and Development Team, Doowon, Choongnam 336864, Korea
Author to whom correspondence should be addressed.
Academic Editors: Mejdi Jeguirim and Lionel Limousy
Received: 2 March 2017 / Revised: 5 April 2017 / Accepted: 12 April 2017 / Published: 1 May 2017
(This article belongs to the Special Issue Biomass Chars: Elaboration, Characterization and Applications)
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Wood pellets are a form of solid biomass energy and a renewable energy source. In 2015, the new and renewable energy (NRE) portion of wood pellets was 4.6% of the total primary energy in Korea. Wood pellets account for 6.2% of renewable energy consumption in Korea, the equivalent of 824,000 TOE (ton of oil equivalent, 10 million kcal). The burning phases of a wood pellet can be classified into three modes: (1) gasification; (2) flame burning and (3) charcoal burning. At each wood pellet burning mode, the volume and weight of the burning wood pellet can drastically change; these parameters are important to understand the wood pellet burning mechanism. We developed a new method for measuring the volume of a burning wood pellet that involves no contact. To measure the volume of a wood pellet, we take pictures of the wood pellet in each burning mode. The volume of a burning wood pellet can then be calculated by image processing. The difference between the calculation method using image processing and the direct measurement of a burning wood pellet in gasification mode is less than 8.8%. In gasification mode in this research, mass reduction of the wood pellet is 37% and volume reduction of the wood pellet is 7%. Whereas in charcoal burning mode, mass reduction of the wood pellet is 10% and volume reduction of the wood pellet is 41%. By measuring volume using image processing, continuous and non-interruptive volume measurements for various solid fuels are possible and can provide more detailed information for CFD (computational fluid dynamics) analysis. View Full-Text
Keywords: combustion; image processing; renewable; volume measurement; wood pellet combustion; image processing; renewable; volume measurement; wood pellet

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Kang, S.B.; Sim, B.S.; Kim, J.J. Volume and Mass Measurement of a Burning Wood Pellet by Image Processing. Energies 2017, 10, 603.

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