International Journal of Applied Science and Technology

ISSN 2221-0997 (Print), 2221-1004 (Online) 10.30845/ijast

Influence of Convection Heat Transfer Coefficient on Heat Transfers and Wall Temperatures of Gas-turbine Combustors
E. Ufot, B. T. Lebele-Alawa, K.D.H. Bob-Manuel

The effect of convection heat transfer coefficient on the combustor liner surface temperatures and the amount of heat that is transferred through the combined effect of radiation, convection and conduction at the surface is investigated. A computer program using pertinent parameters as input was used to handle the heat transfer computations. The results were impressive, showing how the internal and external surface temperatures are affected by varying the coefficient of convective heat transfer. The higher the coefficient, the higher the quantity of heat transferred. Higher wall temperatures are achieved with higher coefficients. But temperature difference between liner outer and inner wall surface temperatures gets larger with increased coefficients. The quantity of heat that could be expected by variation of the convection heat transfer coefficient is in the range of 70,000-85,000KJ.

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