Direct-Contact Heat Transfer in Solid-Gas Systems

Abstract

Heat transfer between solid particles and a gas in direct contact is a subject as old as when solid fuel combustion was first observed. The combustion phenomenon was the principal application of this direct-contact process for many years and may remain so today. The thrust of the current workshop has been the examination of fundamental heat transfer phenomena, however, so the situation with chemically reacting species will not be considered here in depth. We are essentially considering the state of knowledge and continuing needs for describing the exchange between a gas and solids—either particles, solid boundaries, or both-when there are temperature differences between the media.