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Selection, Installation, and Operation of Gas Turbine Inlet Filtration Systems 2010
The inlet filtration system of the gas turbine is important for protecting the gas turbine from airborne contamination which could lead to erosion, fouling, or corrosion. In order to minimize the gas turbine degradation due to inlet air quality, many considerations must be taken when selecting, installing, and operating this system. First, the type of contaminants the gas turbine will experience must be defined. This can be determined from the operating environment, local and temporary contaminants sources, and weather patterns. Once the contaminants are know, the inlet filtration can be selected. The majority of modern systems are comprised of multiple stages of filtration. In these systems, there are different types of filters which are used for removal of water, large objects, coarse particles, and fine particles. The filters are selected based on the type and amount of contaminants they must remove. After the filter system is selected and installed, there are several measures that must be taken to maintain the filtration system. For instance, filtration efficiency is maintained by periodically checking the condition of the filters and also replacing or cleaning filters once they are fully loaded. In order to provide operators with a comprehensive approach to selecting, installing, operating, and maintaining a filter system, GMRC developed a guideline for gas turbine inlet air filtration. This short course reviews the key topic areas outlined in the recently published GMRC Gas Turbine Inlet Air Filtration Guideline.
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