Anti-icing Systems

Anti-icing systems for gas turbines 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

  • Ensures continuous operations in cold conditions
  • Reduced risk of foreign object damage to the turbines
  • Increased availability and reliability

Specifications

Application
Air treatment system for gas turbines, industrial air compressors and diesel & gas engines in environments with risk of ice formation.
Installation options
Anti-icing by mixing the ambient air with hot air:

1. Hot air from the gas generator compressor bleed: In this case, hot air is sent through pipes from the compressor bleed into a reservoir tank, and is distributed through anti-icing nozzle in the opposite direction of the air flow. Taking hot air from the compressor affects the turbine output, usually to a maximum of 2%. This type of system can be offered with silencing to meet noise reduction requirement.

- Hot air from the GT enclosure cooling air exhaust: Ducting brings the hot air in front of the filter and it’s distributed through the ducting. A bypass damper is installed to redirect the air when the anti-icing is not required, per example in the summer.

-Anti-icing with a steam or hot water coil: Using an inlet heat exchanger upstream of the filters can also been done with a coil if there is steam or hot water available or with glycol if another source of heat is available. As this system obstructs the air flow, it has the inconvenience of adding permanent pressure drop to the system.

-Anti-icing with electric resistance: Using electric resistance heating upstream of filters – usually consisting of tightly pack aluminum fins or other conductive material. As with above, this also adds permanent pressure drop to the system.

Documents and downloads

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