Combined Cycle Power Augmentation by Overspray Inlet Fogging
Publication: Journal of Energy Engineering
Volume 136, Issue 1
Abstract
With increasing demand for power and with shortages envisioned especially during the peak load times during the summer, there is a need to boost gas turbine power. In Taiwan, most gas turbines operate in combined cycle mode for base load. Only a small portion of gas turbines operates in simple cycle mode for peak load. To prevent the electric shortage due to derating of power plants during hot days, the power augmentation strategies for combined cycles need to be studied in advance. As a solution, our objective is to add an overspray inlet fogging system into an existing gas turbine-based combined cycle power plant (CCPP) to study the effects. Simulation runs were made for adding an overspray inlet fogging system to the CCPP under various ambient conditions. The overspray percentage effects on the CCPP thermodynamic performance are also included in this paper. Results demonstrated that the CCPP net power augmentation depends on the percentage of overspray under site average ambient conditions. This paper also included CCPP performance parametric studies to propose overspray inlet fogging guidelines for combined cycle power augmentation.
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Acknowledgments
The writers gratefully acknowledge Dr. Norm Decker and Dr. G. T. Chen of Thermoflow Inc. for their assistance in the model setup and thermal performance simulation in this paper. The writers also thank the Power Research Institute, Taiwan Power Company, for their support for this paper.
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Information & Authors
Information
Published In
Journal of Energy Engineering
Volume 136 • Issue 1 • March 2010
Pages: 11 - 17
Copyright
© 2010 ASCE.
History
Received: Aug 28, 2008
Accepted: Apr 29, 2009
Published online: Feb 12, 2010
Published in print: Mar 2010
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