Experimental effi ciency studies of the hydrodynamic fi ltration of diesel fuel

The existing designs of standard fuel treatment fi lters containing replaceable fi lter elements have a short service life and do not always fully meet the requirements of highly effi cient fuel fi ltering. Based of new technical solutions, the authors designed a hydrodynamic fi lter with hydrophobic screen partition. The fi lter element with a hydrophobic screen partition was tested at 20°C with diesel fuel DT-5 EURO, class 4, type III according to GOST Р 52368-2005 (ЕН 590:2004) under the standard test procedure of fi lters and fi lter-separators for ground fuel fi ltering facilities. The content of mechanical impurities in diesel fuel was determined according to GOST EH 12662-2016. To statistically process research results, the authors used Statgraphics software package. It has been established that in the hydrodynamic fi lter the separating screen partition No. 004 has optimal cell size and acceptable hydraulic characteristics. The authors conducted a full factorial experiment to estimate the partition’s infl uence on the fi ltering properties. According to its results, the greatest infl uence on the removal of mechanical impurities at hydrodynamic fi ltration belongs to the speed of fuel fl ow, the smallest – the partition inclination angle and the concentration of mechanical impurities. The presented regression model of hydrodynamic fi ltering is useful for forecasting the effi ciency of diesel fuel cleaning. The conducted research is helpful for determining physical operating conditions of the hydrodynamic fi lter with a hydrophobic screen partition at the designing stage and setting design parameters of fi ltering partitions to ensure the optimum functioning of the device. 

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