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Particle‐Scale Investigation of Heat Transfer in Radiation‐Driven Char Gasification
Author(s) -
Lu Zhao,
Jafarian Mehdi,
Arjomandi Maziar,
Nathan Graham J.
Publication year - 2016
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201500450
Subject(s) - solar furnace , char , particle (ecology) , heat transfer , materials science , particle size , chemical engineering , nuclear engineering , radiative transfer , radiation , raw material , solar energy , process engineering , thermodynamics , chemistry , pyrolysis , physics , nuclear physics , oceanography , engineering , geology , ecology , organic chemistry , quantum mechanics , biology
A model of the steam gasification of a single char particle driven by high‐intensity radiation was developed and experimentally verified with available measurements in the literature. This was used to explore the sensitivity of the particle surface temperature and heat‐transfer mechanisms to variations in particle diameters, radiative heat flux, and the concentration of the gasification agent H 2 O under typical conditions for solar gasification reactors. The results highlight the importance of the particle diameter in influencing solar‐to‐chemical energy conversion efficiency and assist in the selection of appropriate feedstock particles to match the conditions in specific solar gasification reactors.