Anti-icing or inlet heating systems are used either to reduce the risk of ice formation in the turbine bellmouth or to avoid filter clogging from icing or snow formation.
Icing on the filters raises the pressure drop of the system, diminishing turbine efficiency and power output. This can also lead to the turbine shutting down. The risk of ice formation in the turbine bellmouth/compressor could result in damage to the turbine internals.
Anti-icing/air inlet heating systems are critical in environments where ice formation may occur.
Solutions include: pulse cartridge systems, heating coils, hot air ventilation, hot air exhaust, hot air compressed bleed air anti-icing system, infrared heating, electrical resistance and heated CamVanes.
Read about these options in more detail here. Link: https://www.camfil.com/damdocuments/49772/1221753/guide-anti-icing-air-inlet-heating-eng.pdf
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