Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
LCC Evaluation of a High Efficiency Combined Cycle Power Plant Installed in Rio de Janeiro City with a TIC-Gas Turbine Air Inlet Cooling System
Submission Author:
Daniel Chalhub , RJ
Co-Authors:
Paulo Roberto Cruz, Daniel Chalhub, Manoel Antônio da Fonseca Costa Filho
Presenter: Manoel Antônio da Fonseca Costa Filho
doi://10.26678/ABCM.COBEM2017.COB17-0959
Abstract
The aim of this technical paper is to perform a LCC evaluation of a high efficiency 110 MW Combined Cycle Power Plant - CCPP operating in Rio de Janeiro City with the implementation of a TIC system for Gas turbine inlet air-cooling. GT – Gas turbine performance is expressed in terms of net power available on the GT output shaft and heat rate. In GT at nominal speed the air volume flow remains approximately constant, however, the mass flow will vary depending on the air inlet temperature and humidity. In accordance with GE performance chart for each increment of 1 oC in the GT incoming air temperature results in a loss of 1% in GT output shaft power, and increasing in 0,031% the heat rate. For a 10 years scenario, 2007-2016, using a special methodology, a temperature database was developed based on the collection of hourly temperature measurements of the automatic meteorological station of Seropédica - RJ, located in the industrial area of Rio de Janeiro City. In a previous technical analysis the AC – Absorption chiller – TIC– Turbine Inlet Cooling technology was elected as being the best technology to be applied. The estimated net electric power production would increase by 69.248MWh/yr. The payback period is 1.5 years and the net present value is 67.26 MUS$, considering the ANEEL electric power prices to Rio de Janeiro, Brazilian taxes, the ST power losses, the TIC total capital cost and TIC O&M costs during 20 years.
Keywords
turbine inlet cooling, high efficiency aeroderivative gas turbine, weather temperature database, Turbogeneration System Availability
