Premium
Experimental studies of heat transfer to horizontal tubes in a pilot‐scale fluidized‐bed combustor
Author(s) -
Bardakci Tevfik,
Molayem Benjamin
Publication year - 1989
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450670223
Subject(s) - distributor , fluidization , heat transfer , fluidized bed , tube (container) , heat transfer coefficient , materials science , mechanics , coal , splash , fluidized bed combustion , thermodynamics , composite material , waste management , engineering , physics
Experimental data are obtained for the overall heat transfer coefficient between immersed horizontal tube bundles and an atmospheric fluidized bed combuster burning high‐sulfur coal. Limestone (1000 μm size) is used as the bed material. Tests are conducted with coal and limestone addition at overall average bed temperatures ranging from 1028 to 1116 K, and fluidizing velocities ranging from 2.08 to 3.14 m/s. The overall heat transfer coefficients of the horizontal tube sections increase as the height from the distributor plate increases, except for the top tubes located in the splash zone. The average overall heat transfer coefficients of all horizontal tube sections increases as the fluidization velocity and overall bed temperature increase.