Desenvolvimento de um modelo matemático para avaliação de desempenho de turbinas a gás de um eixo

Abstract

This work presents the development of a computational program, denominated TurboCycle, to simulate and to analyze the thermal behavior and performance of gas turbine, operating with simple cycle or regenerative cycle on design point and off design point, using a new methodology in the construction of compressors and turbines maps. Among the potentialities of the software, there is the possibility to simulate the behavior of the gas turbine operating with any liquid or gaseous fuel, only to changing its chemical composition and the parameters of the gas turbine. To use gaseous fuels, it is necessary a fuel compressor. In this case, the program TurboCycle also makes possible the simulation of an auxiliary compressor. Ambient conditions can also be altered, obtaining results of the gas turbine out of the design conditions. Initially, it was conducted a simulation of simple cycle gas turbines operating with natural gas and biogas, which results are compared with the commercial program GateCycle. This comparison evaluates the computational program developed. Another simulation was carried out comparing the data obtained by the two programs with the real data from a Capstone gas turbine, with regenerative cycle, operating with natural gas, diesel and biodiesel. The results are placed in form of graphs and tables for comparative analysis among the results of the simulation with GateCycle and the experimental results.