Heat transfer to tubes in freeboard space of fluidized-bed combustors. Progress report, February 1, 1983-August 1, 1983
The objective of the research reported is to carry out an experimental study of heat transfer characteristics for tubes located in the freeboard region of fluidized beds. The main effort reported was given to evaluation of the dynamic contact data and phenomenological model developments. Heat transfer data were obtained on a horizontal tube in freeboard region. The feasibility of using capacitance probes for measurements of dynamic contact of bed particles with the tube surface was successfully established. High temperature heat transfer experiments have been completed for silica sand and limestone at temperatures of 300 to 750/sup 0/C and gas velocities up to 5 m/s. Dynamic parameters required for calculating heat transfer are being computed from capacitance probe data, and development of a phenomenological model and a correlation for the heat transfer process for horizontal tubes in freeboard region are in progress. (LEW)
- Research Organization:
- Lehigh Univ., Bethlehem, PA (USA). Dept. of Mechanical Engineering and Mechanics
- DOE Contract Number:
- FG22-80PC30214
- OSTI ID:
- 5778754
- Report Number(s):
- DOE/PC/30214-T6; ON: DE84000846
- Country of Publication:
- United States
- Language:
- English
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Heat transfer to tubes in freeboard space of fluidized-bed combustors. Progress report, February 1, 1982-August 1, 1982
Heat transfer to tubes in freeboard space of fluidized-bed combustors. Progress report, August 1, 1982-February 1, 1983
Related Subjects
421000* -- Engineering-- Combustion Systems
CAPACITANCE
CARBONATE ROCKS
CHALCOGENIDES
COMBUSTORS
CORRELATIONS
ELECTRICAL PROPERTIES
ENERGY TRANSFER
FLUIDIZED-BED COMBUSTORS
GLASS
HEAT TRANSFER
LIMESTONE
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PROBES
ROCKS
SEDIMENTARY ROCKS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
TUBES