How to Optimize the Gas Turbine Filters

Gas turbine filter is one of the critical components of many industrial applications. Many industries are based on operations that are heavily dependent on effectively working gas turbine filters. In order to ensure standard performance and reliability of this component, an efficient air filtration is critical to achieve. Fuel cost is accounted for 80 percent for the lifecycle cost of electricity, implying that small efficiency gains are equivalent to huge savings. It is to be noted that such operational savings can only be achieved through efficient and high performing compressor using High Efficiency (HEPA) air filters.

The HEPA filtration plays a critical role in maintaining efficiency of the gas turbine filter throughout its life span. If the gas turbine engine is clean, less frequent inspections are required and higher availability and fewer shutdowns are expected. The gas turbine ventilation and combustion air filters are developed to shield gas turbine, generator and equipment sections from the impacts of hazardous air-borne particles, dirt, contamination and other foreign objects. You can see that many inlet conditioning alternatives are available in the market today, which help optimizing gas turbine air filter systems and thus maximizing gas turbine performance.

The filtration systems of the gas turbine are optimized to minimize the extent of foreign contaminants entering the turbine and are mainly dependent on the operational settings. Rain, seasonal pollutants, sand, snow and ice, local industry exhaust, dust and other air-borne pathogens should be taken into an account.

High efficiency Particulate Air Filters (HEPA) filters are usually defined as holding an efficiency of more than 85 percent for particles equal to or greater than to a filter’s most penetrating particle size (MPPS). The filter MPPS differs based on media, its velocity, configuration with other factors; however, it is mainly in between 0.07 and 02 microns for the filters fitted in gas turbine inlet applications. Cost-benefit analysis models for specialized operating setting can be used for filter purchase cost, fuel price, maintenance, power sale price, inspections, power degradation, wash cycles, pressure loss, heat rate increments, down time and labor costs. This greatly helps achieving gas turbine air filter system optimization.

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