Development Potential of Combined-Cycle (GUD) Power Plants With and Without Supplementary Firing

Author:

Finckh H. H.1,Pfost H.2

Affiliation:

1. Gas Turbine and Combine Cycle Technology, Siemens AG, KWU Group, Erlangen, Federal Republic of Germany

2. Institute of Energy Technology, Ruhr-University, Bochum, Federal Republic of Germany

Abstract

Unfired combined cycles achieve superior efficiencies at low emission levels. The potential and efficiency limits are investigated and the possibilities for enhancing efficiency are described. It is demonstrated that limited supplementary firing of the heat recovery steam generator can be an interesting alternative and that this allows efficiency and plant size to be increased. The effects of supplementary firing on NOx emissions are also shown.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

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