M.Sc Tezi Görüntüleme

      SUMMARY

      In recent years, pneumatic conveying systems have been widely used in industries to handle powdered an granular materials because of a series of advantages such as the absence of envorimental pollution, flexible installation, optimum dimensions, progressive reduction of capital and installation cost. Unfortunately, the experimental and theoretical explorations done to increase system performance are still not maintained sufficiently achievements. Therefore, in this study, it is purposed mainly to investigate of the effects of variety bed material caracteristics, such as partical diameter, density, bed material temperature and quantity, on pressure drop and minimum fluidizing velocity which are important at the performance of pneumatic transportation.

      The conclusions obtained from this study showed that particle diameter, density, bed material concentration, bed void rate and bed temperature at the high temperature differences have a considerable effect on the pressure drop and minimum fluidizing velocity. However, It is found that the experimental results for fixed pressure drop measured in fluidised bed are smaller than that of fixed pressure drop variables calculated with the weight per unit area and these differences between the two values are due to the particle-chamber wall interactions and inaccuracies in the experiments.