Maarky Thermal Systems’ Turbine Bypass Operation Solutions

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Maarky Thermal Systems

Maarky Thermal Systems designs quality-engineered heat transfer equipment that enables power plants to function optimally. The full range of Maarky Thermal Systems offerings includes feedwater heaters and exchangers, as well as steam surface condensers. The latter systems are critical in maximizing plant output through decreasing back-pressure.

For combined-cycle power plants, one focus is on ensuring that turbine bypass operations are seamless and allow consistent performance. With steam turbine out of service, high temperature and pressure steam from the heat recovery steam generator is directed into a pressure reducing desuperheating (PRD) valve that reduces pressure and temperature of the bypass steam to a desired value. The bypass steam at relatively low pressure and temperature is discharged into the condenser.

Optimally-engineered steam surface condenser systems offer reliable performance during normal and bypass operation. The bypass steam inlet arrangement is carefully designed so as to alleviate damage to tubes from steam impingement. The bypass steam flow patterns are carefully deciphered using the state of the art Computational Flow Dynamics (CFD) programs.


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