HEAT TRANSFER PARAMETERS FOR SPHERICAL PARTICLES SUBJECT TO IMMERSION HEATING

摘要

In this study, simple models are provided to determine the heat transfer parameters in terms of the thermal diffusivities and heat transfer coefficients during heating of spherically shaped particles. A center temperature distribution of a spherical brick particle was measured and employed. The lag factor and heating coefficient are obtained and incorporated into the present models. The dimensionless theoretical center temperature distribution was computed using the obtained heat transfer parameters and compared with the experimental measurements. In the comparison, a very good agreement was found. As a result, we presented an approach and hence developed simple and accurate models. In this respect, we believe that these models will be beneficial to people and industry involved in practical heating applications. [References: 7]