On Line Evaluation of Exhaust Wetness of Steam Turbine

摘要

Based on the fundamental of heat transfer, this paper proposes a method for evaluating on line the exhaust steam wetness and cylinder isentropic efficiency of steam turbines. The comparisons of the calculated results with the design parameters of 100%, 75% and 50% loads show that the relative errors of the cylinder isentropic efficiency are all less than 2%, and that the relative errors of the exhaust wetness are all less than 7%.