PERFORMANCE ANALYSIS OF GAS TURBINE AT VARYING AMBIENT TEMPERATURE

In the present work, the performance analysis of a simple open cycle gas turbine power plant which is situated at Uran in district Raigad of Maharashtra, India is carried out at varying ambient temperature and pressure ratio and a comparison is carried out from the stipulated ISO conditions. Generally, there is a difference between the actual power generated by the gas turbine at site ambient conditions and the power tagged on the gas turbine stipulated from the ISO conditions. The analysis of the cycle has been carried out by using MATLAB 13.The result shows that there is a loss of 3.28 % in thermal efficiency at 9 pressure ratio with the increase in ambient temperature from 283 K to 323 K. This loss increases up to 3.97 % at 21 pressure ratio. In addition to this, it was observed that there is a loss of 4.19 MW or 3.87 % in net power at 9 when ambient temperature rises from 283 K to 323 K, which in term increases up to 5.92 MW or 4.46 % at 21 pressure ratio. The analysis reveals that ambient temperature and pressure ratios were strongly affected the performance of gas turbine power plant.