Gas Turbine Filters

Name: GT filter selection
Description:
Selection of high performance air filters result in greater operating profit of a gas turbine system.
High performance filters are measured in 3 critical areas which have a direct impact on the performance of a combustion gas turbine - pressure drop, efficiency and service life.
1.Pressure Drop (or Pressure Differential or ∆P) indicates the resistance to airflow through a filter. High filter pressure drop reduces turbine output and a low pressure drops improves turbine output. Pressure Drop is measured in measured in mm of water or inches of water.
2.Filter Efficiency defines the amount of contaminant that is removed from the inlet air stream. Efficiency is typically measured in terms of the number of particles removed, as well as their size. A highly efficient filter, especially one that removes particles smaller than a micron in size, can improve turbine performance by minimizing blade fouling. Less fouling equates to improved turbine performance, lower maintenance costs and lower operating risk.
3.Service Life indicates the time the filter is in operation - before it must be replaced due to contaminant loading and a pressure drop that exceeds the recommended level for the turbine. A long service life, at low pressure drop, results in a low mean operating pressure drop of the system over time, resulting in more turbine output over time.