Author : Ali F. Ali Fadiel, Salih Yassin Mohammed and Mohammed S. Rezk

This paper concerns the study of the UBARI power plant, it consists of four single-cycle gas turbine units with a total capacity of 640 MW. As stated in the specification, the thermal efficiency is low (36.7%), the temperature is high (536°C), and the waste heat loss per MW unit is high (207.94). The aim is to address these issues, meet future electricity demand, and reduce harmful emissions to protect the environment due to the power plant’s geographical location. The efficiency of generating high-pressure steam using waste heat in four steam blocks of four steam turbines was investigated. Examining the solution with LabVIEW shows: The capacity of each heat recovery steam generator is 62.16MW, that is, the total capacity of the power plant is about 4×222.16MW, and the total efficiency is (51.35%). In addition to reducing the heat loss of the exhaust gas. A good correlation can be obtained by relating the net capacity and gross efficiency of the combined plant to the operating parameters.

Keywords: UBARI power plant, combined cycle power, Exhaust temperature, Pressure ratios, Exhaust mass flow