An experimental setup has been built to investigate the effect of flow direction with respect to gravity on particulate fouling of heat exchangers. Three orientations of flow have been investigated, horizontal flow, vertical flow and a flow with an angle of 45. It is found that fouling starts at the point of stagnation irrespective of the flow direction, and also starts at the top point of the heat exchanger tubes. Particulate fouling grows at these two points till they meet and the fouling layer covers the whole area of the heat exchanger tube. The best orientation for lingering particulate fouling is the downward flow, where the flow stagnation point coincides with the top point of the heat exchanger tubes and the growth of the fouling layer starts only from one point.
|Title of host publication||Proceedings of the 2007 ECI Conference on Heat Exchanger Fouling and Cleaning VII, 1-6 July 2007, Tomar, Portugal|
|Place of Publication||Portugal, Tomar|
|Publication status||Published - 2007|