Analysis and modeling of the thermal behavior of an improved pellet cookstove

Autor: Théophile Vitoussia, Alain Brillard, Justin Bertsch, Olivier Allgaier, Gontrand Leyssens, Cornélius Schönnenbeck, Ebenezer Njeugna, Jean-François Brilhac
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: SN Applied Sciences, Vol 3, Iss 6, Pp 1-18 (2021)
Druh dokumentu: article
ISSN: 2523-3963
2523-3971
DOI: 10.1007/s42452-021-04630-4
Popis: Abstract In Sub-Saharan countries, cooking is usually done at a domestic scale using rudimentary stoves with wood or charcoal as combustibles. To improve the cooking behavior and reduce the deforestation, an improved pellet cookstove was conceptualized with guiding ideas in mind such as simplicity, robustness and ability to burn pellets built with local wood residues under a natural draught. Combustion and water ebullition tests were performed with two configurations of the upper part of the cookstove: thick steel plate or ring, and with standardized EN+ pellets as combustible. The main pollutant gases (CO, CO2 and NOx), together with O2, were continuously measured at different positions of the cookstove during a water ebullition test with the ring configuration. The levels measured above the pot were lower than the thresholds currently proposed by the World Health Organization. Simple and phenomenological thermal models were proposed to simulate the plate, or ring, and water temperatures during the combustion or water ebullition tests and to determine the intrinsic convection coefficients. The maximal relative differences between the experimental and simulated temperatures were computed between 7 and 21%. The stove power was evaluated at 4336 ± 23 W. The cookstove yield for the water ebullition test with the ring configuration was computed equal to 12.3 ± 0.1%, slightly lower than that of cookstoves previously analyzed in the literature.
Databáze: Directory of Open Access Journals
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