HEAT TRANSPORT IN FLUIDIZED BED COMBUSTORS.

In India, a large quantity of low grade fuel such as rice husks, ground nut shells, etc. , having a calorific value of about 3500 kcal/kg, is available. But difficulties due to scale formation on tubes were reported to crop up when these types of materials are used in conventional boilers. However, there is a possibility that by using a fluidized bed, through the continuous passage of the particles over the tubes, scale formation could be minimized. Due to the high temperature encountered here, radiation in addition to convection will play a significant role. Therefore, this study attempts to estimate the effect of temperature variation on heat transport by radiation and convection, separately.