Evaluation of different alternatives of power augmentation for an existing combined cycle power plant in Brazil

César Cells, Vinicius P. De Avallar, Sandro B. Ferreira, Sergio L. Braga

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations


Not only in simple cycle power plants, but also in combined cycle power plants based on gas turbines, the power output is considerably reduced with the increase of the ambient temperature. Many technologies for power augmentation of gas turbines have been proposed along the last decades, and several systems have already been applied in real plants. Power augmentation techniques are concentrated on the philosophy of increasing the mass now rate going through the gas turbine. The goal of this paper is to review the state-of-the-art of the different technologies of power augmentation available today for gas turbines, as well as to evaluate and to select the best alternative of power augmentation for an existing combined cycle power plant in Brazil. The calculations are carried out using an in-house computer program, called the Power Augmentation Technologies (PAT) model, developed for thermal performance modeling and financial analysis. In order to validate the computational model developed, the authors carried out comparisons between the results obtained with this model and data obtained from literature. For the specific combined cycle power plant analyzed in this work, and considering the internal rate of return and the pay-back period as the main investment economic indicators determining the implementation of a project developed for increasing the plant power output, the results show that the power augmentation systems based on evaporative coolers are the most suitable for this plant.

Original languageEnglish
Title of host publicationProceedings of the ASME Turbo Expo 2007 - Power for Land, Sea, and Air
Number of pages10
StatePublished - 2007
Externally publishedYes
Event2007 ASME Turbo Expo - Montreal, Que., Canada
Duration: 14 May 200717 May 2007

Publication series

NameProceedings of the ASME Turbo Expo


Conference2007 ASME Turbo Expo
CityMontreal, Que.


  • Combined cycle power plant
  • Power augmentation
  • Thermoeconomics


Dive into the research topics of 'Evaluation of different alternatives of power augmentation for an existing combined cycle power plant in Brazil'. Together they form a unique fingerprint.

Cite this