Anti icing

Anti-icing mechanisms are generally used on gas turbine inlets when the air temperature is below 5 °C and the relative humidity is above 70%. Insufficient icing protection may result in inlet filter system issues and ice formation at the turbine inlet.

Inlet Filter system Issue

• Snow and ice collect on the inlet filters and components:
• High and long-term pressure drop reduces turbine efficiency and power output.
• Degradation of filter media performance increases the risk of carry over since water will drag contaminants through the filter, resulting in engine degradation due to fouling or corrosion.

Ice Formation at the Turbine Inlet

• Ice forms on the turbine inlet bell-mouth and inlet guide vanes:
• Overall turbine performance is reduced since ice formation alters flow geometry.
• Catastrophic failure may occur if ice is ingested by the turbine.

to mitigate these risks, there are various anti-icing options show in Table 1, where location, heat capacity, and functionality for each option is outlined.

Table 1

Although summer is a few months away in some countries, you can prepare for next year by installing the right anti-icing system for your local site conditions.

Depending on your current filter solution and operational requirements, the anti-icing application may change. For recommendations on the optimal application for your site, contact your local representative.

Upstream: placed in front of the air inlet filter system
Downstream: placed behind the filters and protects only the bellmouth