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A comparative study of radiative heat transfer modelling in gas-fired furnaces using the simple grey gas and the weightedsum-of-grey-gases models
Liu F.a,c, Becker H.A.a, Bindar Y.b
a Centre for Advanced Gas Combustion Technology, Department of Chemical Engineering, Queen’s University at Kingston, Canada
b Department of Chemical Engineering, Faculty of Industrial Technology, Institute Technology of Bandung, Indonesia
c Combustion Technology, ICPET, National Research Council, Canada
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]Radiative heat transfer in, (a) two model enclosures containing a high-temperature CO2-H2O mixture, and (b) a real multiburner natural-gas-fired furnace, was studied using the simple grey gas model and the more realistic weighted-sum-of-grey-gases model of gas radiative properties. The radiative transfer equation was solved by the discrete-ordinales method. When the radiative transfer equation and the enthalpy transport equation are solved simultaneously, the simple grey gas model yields wall heat flux distributions in reasonably good agreement with those of the weighted-sum-of-greygases model but underpredicts gas temperature levels. When the temperature field is specified and the radiative transfer equation is then solved, however, the wall heat flux distributions predicted using the simple grey gas model are in serious error compared to those from the weighted-sum-of-grey-gases model. The weighted-sum-of-grey-gases model predicts more accurate heat flux and gas temperature distributions than the simple grey gas model in the full modelling of the gas-fired furnace. © 1998 Elsevier Science Ltd. All rights reserved.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Grey gas model,Weighted-sum-of-grey-gases model[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The authors gratefully acknowledge the funding by the Supply and Service Canada (for the CANMET division of the National Resources Canada); by British Gas plc; and by the National Science and Engineering Research Council of Canada.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/s0017-9310(98)00098-2[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]