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Protecting Steam Cycle Components During Low-Load Operation of Combined Cycle Gas Turbine Plants

The cyclic operation of peaking plants introduces challenges that can result in damage to steam cycle components. This article provides an overview of the components that may be affected by low-load operation and highlights some potential solutions and the trade-offs involved. For example, at low-load conditions it is often difficult to keep heat exchange surfaces below design temperatures or operationally limited temperature. Low-load operation also introduces enhanced risk of fatigue damage and accelerated life consumption for Grade 91 piping materials.

Revision Date:  4/2/2015

Tags:  221112 - Fossil Fuel 化石燃料, Heat Recovery Steam Generator, Condenser, Steam Turbine, Cycle Chemistry, Power Magazine