Power Enhancement Analysis from Exhaust Energy Flow of An Open Cycle Gas Turbine Power Plant

Optimizing the use of natural gas to reduce fossil fuel consumption can be realized by increasing power output through the utilization of gas turbine exhaust energy. This research presents a power enhancement analysis using the exhaust energy flow of the 30 MW open-cycle gas turbine power plant. The initiative is based on the working principle that opencycle gas turbines generally have an efficiency of 25-30%, which means that up to 70% of energy is directly released into the atmosphere. The analysis uses mass balance calculation of fuel and air supply to find the exhaust energy flow-nevertheless, the modeling simulation of the combined cycle uses the cycle tempo program. The result shows approximately 51.99 MW of energy flow from the gas turbine exhaust. The combined cycle modeling simulation shows that the possibility of improvement is around 13.03 MW or the equivalent of 42.86% power enhancement. This finding indicates that natural gas consumption can be further optimized using a combined cycle rather than a conventional open-cycle gas turbine to reduce energy losses in gas turbine power plants.