APPRAISAL OF THE PERFORMANCE OF A MARINE GAS TURBINE USED FOR ELECTRICAL POWER GENERATION

Abstract

The appraisal of the performance of a marine gas turbine used for electrical power generation on the basis of the comparative study of the influence of the ambient temperature and the turbine inlet temperature has been performed. The appraisal encompasses studying of the logsheets that were used when the gas turbine was in operation and the study took ten weeks. The marine gas turbine engine which this evaluation is being performed is the ABB:ALSTOM, Aero – Derived of 75MW capacity used to generate power for electricity at Afam III Power Station in Oyigbo Local Government Area of Rivers State. The result obtained shows that both the ambient temperature and the turbine inlet temperature has great effect on the gas turbine performance. While an increase in ambient temperature will cause a decrease in the power out and thermal efficiency, an increase in the turbine inlet temperature will result to an increase in both the power output and thermal efficiency thereby enhancing productivity. Also, the net work increases as both the turbine inlet temperature and ambient temperature increases thereby requiring much energy at both high turbine inlet temperature and ambient temperature. Practically, it is recommended that at ambient temperature of 310C with a corresponding turbine inlet temperature is required for optimal power generation.