Resumo

LESME-JAEN, René; RODRIGUEZ-ORTIZ, Leandro  e  LESME-JAEN, Odalis. Simplified model to evaluate heat losses to the environment in the gasification zone of a downdraft reactor. RTQ [online]. 2022, vol.42, n.2, pp. 285-302.  Epub 30-Ago-2022. ISSN 2224-6185.

Gasification is one of the thermo conversion processes with the greatest application prospects for the transformation of biomass into a fuel with greater added value and field of application. Within the technologies currently in use, downdraft gasifiers are the most widely used for small capacity installations. During the thermodynamic evaluation of these gasifiers, one of the energy losses to take into account is the heat losses to the environment and given the variety of heat transfer processes that occur within the reactor, the calculation method are complex. In the present work, a simplified model is developed to evaluate these heat losses to the environment. The model allows from the project stage to evaluate the losses based on the dimensions of the reactor, the thermal properties of the construction materials and the working temperature of the bed with an error of less than 1% with respect to the non-simplified method.

Palavras-chave : gasification; heat transfer; downdraft reactor.

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