Investigations for performance enhancement of dual pressure HRSG in gas/steam combined cycle power plants

Abstract

HRSG is the vital equipment in gas/steam CCPP which plays important role in enhancing the overall performance of the plant. HRSG is designed on the basis of the size of gas and steam turbines used in the power plant. Therefore HRSG directly affects performance of CCPP and its optimization based on physical design can improve the plant performance. In the present study the plant data of CCPP of NTPC Ltd. at Auraiya (U.P.), India has been considered for study. A segmented finned model has been chosen as it is preferred arrangement [4] and thermodynamic investigations have been carried upon the dual pressure HRSG in gas/steam CCPP in the perspective of maximum heat recovery and minimum pressure loss. The performance investigations of varying physical parameters on dual pressure HRSG with segmented fins are useful for CCPP designers and for all those who are engaged in the area of heat recovery.

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