Prediction of Gas Turbine Inlet Condensation Ice Accretion Conditions
In areas with high cold and high humidity,ice accretion may occur in the gas turbine air intake system.Ice accretion will change the shape of the flow channel,easily causing internal flow field distortion and compressor surge and other accidents,seriously threatening the performance of the gas turbine.However,the current domestic research on ice accretion and anti-icing on the gas engine inlet is still in its infancy,and no one is involved in the research on the related principles of ice accumulation on the intake air.To this end,this article systematically reveals the principle of intake air condensation and ice accretion through derivation of the relevant formulas of gas turbine inlet thermodynamic temperature drop,surface temperature,and moist air,and the judgment criteria of condensation and ice accretion were established.The air intake conditions corresponding to the regions of ice fog,ice crystals,rime ice,glaze ice,frost,condensation,and free moisture are determined.The range of inlet temperature and relative humidity corresponding to the risk of inlet ice accretion under the condition of condensing ice accretion in the center of the airflow and on the wall is proposed.It is pointed out that when the ambient temperature is lower than1.1℃and the humidity is higher than60%,there will be ice accretion danger at the compressor inlet guide vane.Relevant research results have important reference value for improving the gas turbine intake ice accumulation theory and guiding the design of related anti-icing systems.
gas turbineair intake systemcondensationice accretionprediction
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