Experimental heat transfer evaluation in a porous media

نویسندگان

چکیده

The evaluation of the heat transfer coefficient between hot gases and biomass particles is not easy to estimate because concomitance exothermic endothermic reactions. However, a proper this fundamental design pyrolysis apparatus. This paper presents an experimental study regarding wood pellets heating up in batch reactor using exhaust from engine. Temperature flow entering were measured over time. A first test was carried out hemp hurd with 15% sawdust, second one carbonized obtained previous test. Fresh have higher thermal capacity compared that almost inert follow more regular trend. Heat calculated considering energy released by passing through as sum absorbed losses. Convection predominant mechanism convective evaluated. Finally, for 1 kg fuel About 0.7 kWh/kg are necessary pyrolyze kind while 110 W/(m2K) estimated packed bed.

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ژورنال

عنوان ژورنال: Journal of Physics: Conference Series

سال: 2021

ISSN: ['1742-6588', '1742-6596']

DOI: https://doi.org/10.1088/1742-6596/1868/1/012016