5.0 - Applications

Abstract

Circulating Fluidized Bed (CFB) technology is an attractive choice and was specifically developed to address today's needs for fuel flexibility and low emissions. Although a number of correlations and theories for heat transfer between fluidized beds and surfaces are available, little has been reported in convective heat transfer in CFB to a horizontal tube. During short time scales the system may be far from equilibrium and the high rate unsteady state transient processes cannot be fully described using Fourier's heat conduction law. The chapter discusses two cases: flow of gas-solid suspension away from the horizontal tube, and flow of gas-solid suspension toward the horizontal tube. Heat sinks are used in electronic equipment designs to transfer heat from a heat source, such as an electronic component, to lower temperature surroundings. The objective of a heat sink is to lower the temperature of the heat generator to prevent performance degradation and prolong the life of the heat source. The effectiveness of a heat sink depends on its ability to transfer heat from the heat source to the lower temperature surroundings. Some factors influencing this ability include the heat transfer rate of the material from which the heat sink was constructed and the surface area of the heat sinks. Solutions to the damped wave diffusion and relaxation equation in one dimension can be used to interpret a variety of biological phenomena––including developmental biology, drug design, and neuroscience.