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A design methodology for small‐scale bubbling fluidized‐bed furnaces
Author(s) -
Macgregor W. A.,
Ugursal V. I.,
Hamdullahpur F.
Publication year - 1995
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440190607
Subject(s) - freeboard , fluidized bed , heat transfer , distributor , work (physics) , slurry , nuclear engineering , fluidization , coal , process engineering , range (aeronautics) , mechanical engineering , waste management , materials science , environmental science , mechanics , engineering , environmental engineering , composite material , physics
A detailed methodology is presented for the design of small‐scale fluidized‐bed furnaces (SSFBF) in the 15–250 kW capacity range for domestic space and hot water heating. These bubbling fluidized‐bed furnaces burn a beneficiated coal‐water slurry mixture, and do not have heat exchange tubes in the bed or freeboard regions. Algorithms are developed, based on this methodology, to calculate furnace design and performance parameters. The heat transfer coefficients are calculated for the dense bed and freeboard of the SSFBF. These are then compared with theoretical and experimental heat transfer coefficients in the published literature. Excellent agreement is found between those in the SSFBF and those in the literature. The finding of this work is that the methodology and the heat transfer coefficients obtained provide excellent design tools for the scale‐up of bubbling fluidized‐bed furnaces in the 15–250 kW range.