Influence of Oscillating Combustion on Thermal Boundary Layer in a Diesel Fired Crucible Furnace

Abstract

The results of an experimental investigation on a diesel fired crucible furnace associated with thermal boundary layer are presented. Oscillating combustion technology is innovative and simple process employed to study its influence on thermal boundary layer, requires an oscillating valve to be incorporated on the path of fuel flow to create oscillations. This paper represents an effort to explain the enhancement in the heat transfer rate in the furnace load and improvements about the performance characteristics such as melting time, specific energy consumption and thermal efficiency. Tests were conducted on the furnace in non-oscillating and oscillating combustion mode and comparisons have been made to verify the significance of the oscillations which influences the breakup of thermal boundary layer formation during the non-oscillating mode of combustion. It has been observed from the experimental data that the different temperatures recorded during the pragmatic tests are sufficient to understand the enhancement in heat transfer rate from flame to the load is due to the more luminous fuel-rich zone and breakup of the thermal boundary layer