TY - GEN
T1 - A study on wall to bed heat transfer in a conical fluidized bed combustor
AU - Im, Ik–Tae
AU - Abdelmotalib, Hamada M.
AU - Kim, Min Soo
AU - Park, Chan Woo
N1 - Publisher Copyright:
© 2021, Begell House Inc. All rights reserved.
PY - 2015
Y1 - 2015
N2 - In the present work flow characteristics and wall to bed heat transfer in a conical fluidized bed combustor of height 0.8 m and cone angle of 30o were numerically analyzed and the results were compared to experimental results. A two fluid Eulerian–Eulerian model coupled with kinetic theory of granular flow (KTGF) was used to simulate heat transfer in a conical FBC. Hydrodynamic characteristics such as sand volume fraction, bed expansion, and pressure drop as well as heat transfer coefficient were compared to experimental data at different operating conditions such as superficial gas velocity, granular temperature model and different wall boundary conditions. Both heat transfer coefficient and pressure drop increase with increasing gas velocity. Using phase property model for granular temperature with slip conditions at wall achieved better agreement between experimental and numerical results in case of heat transfer coefficient.
AB - In the present work flow characteristics and wall to bed heat transfer in a conical fluidized bed combustor of height 0.8 m and cone angle of 30o were numerically analyzed and the results were compared to experimental results. A two fluid Eulerian–Eulerian model coupled with kinetic theory of granular flow (KTGF) was used to simulate heat transfer in a conical FBC. Hydrodynamic characteristics such as sand volume fraction, bed expansion, and pressure drop as well as heat transfer coefficient were compared to experimental data at different operating conditions such as superficial gas velocity, granular temperature model and different wall boundary conditions. Both heat transfer coefficient and pressure drop increase with increasing gas velocity. Using phase property model for granular temperature with slip conditions at wall achieved better agreement between experimental and numerical results in case of heat transfer coefficient.
UR - https://www.scopus.com/pages/publications/84983279730
U2 - 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf.960
DO - 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf.960
M3 - Conference paper
AN - SCOPUS:84983279730
SN - 9781567004298
T3 - International Symposium on Advances in Computational Heat Transfer
SP - 1067
EP - 1079
BT - Proceedings of CHT-15
PB - Begell House Inc.
T2 - 6th International Symposium on Advances in Computational Heat Transfer , CHT 2015
Y2 - 25 May 2015 through 29 May 2015
ER -