Thermal and Economic Analysis of Gas Turbine Using Inlet Air Cooling System Thamir K. Ibrahim, Mohammed K. Mohammed, Omar I. Awad, Rizalman Mamat and M. Kh Abdolbaqi MATEC Web Conf., 225 (2018) 01020 Published online: 05 November 2018 DOI: 10.1051/matecconf/201822501020