Development of reliable predictive heat transfer correlations for low-rank coal-fired fluid bed combustors. Final report

Technical Report · Wed Feb 01 04:00:00 EST 1984

OSTI ID:6253260

Grewal, N S

(1) The proposed correlation of Equation (5) is recommended to predict the maximum value of heat transfer coefficient between a horzontal tube and a gas-solid fluidized bed of small particles under the conditions given. For high temperature applications (T/sub B/ > 600/sup 0/C), the radiative component is important and was estimated following Baskakov et al. (2) The proposed correlation of Equation (8) was found reliable to predict the existing data on the maximum value of heat transfer coefficient between a horizontal tube bundle and a gas-solid fluidized bed of small particles under the conditions given. At high temperatures, the radiative component was estimated from the experimental data of Baskakov et al. (3) The correlation of Equation (8) predicted the GFETC data taken during the combustion of low-rank coal very well, when the contribution due to radiation was estimated following Baskakov et al. (4) The correlations proposed by Grewal and Bansal et al. were found to predict the data taken during low-rank coal combustion within +-25%, when the contribution due to radiation was included and estimated following Baskakov et al. (5) Finally, the correlations for large particles (anti d/sub p/ > 1mm) as proposed by Glicksman and Decker, Catipovic et al., Xavier and Davidson, and Zabrodsky et al. also predicted the data for low-rank coal fluidized bed combustor quite well, when the radiative component was estimated from the data of Baskakov et al. 64 references, 19 figures, 10 tables.

• Research Organization: North Dakota Univ., Grand Forks (USA). Engineering Experiment Station
• DOE Contract Number: AT18-81FC10489
• OSTI ID: 6253260
• Report Number(s): DOE/FC/10489-1694; ON: DE85004809
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL RANK
COMBUSTION
COMBUSTORS
CORRELATIONS
DATA
ENERGY SOURCES
ENERGY TRANSFER
EXPERIMENTAL DATA
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
HEAT EXCHANGERS
HEAT TRANSFER
INFORMATION
MATERIALS
NUMERICAL DATA
OXIDATION
PARTICLE SIZE
RECOMMENDATIONS
SIZE
TEST FACILITIES
THERMOCHEMICAL PROCESSES