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Hydrophobic media provides water removal and prefiltration

Vokes Macrogen GT Duo employs a hydrophobic media that provides effective water removal while in a study of 2 x 250 gas turbines in 2012 also delivered particle filtration to G4 or M5 efficiencies. This means that separate coalescer and prefiltration stages are unnecessary and that the redundant filter phase can be removed. The F9 final filters downstream from the Macrogen GT Duo system ran for a greater number ofhours and had a slightly lower pressure drop (105 against 110 Pascal) over the trial period. This result is due to the fact that the Macrogen has not only reduced the pressure drop but, at the same time, has increased the efficiency of prefiltration (from G4 to M5) better protecting the final filter.

Revision Date:  12/9/2016

Tags:  Mann+Hummel, Air Filter

More efficient filters are justified says Carlos Conti of Vokes

Moving from two to three stages has significantly increased system pressure drop but simultaneously reduced the quantity of dust reaching the turbine by approximately 98%, lowering the chance of engine damage – fouling, corrosion and erosion. To quantify this additional pressure drop, it is agreed within the power generation industry that an increase in pressure drop of 50 Pa causes a fall in efficiency of 0.1%. Quantifying the benefit is a balance between reduced fouling and increased pressure drop. The increased pressure drop can be estimated to restrict performance by approximately 0.4%, while cutting fouling provides a 1.2% improvement in output (empirical average). Therefore…

Revision Date:  12/9/2016

Tags:  Mann+Hummel, Air Filter