Evaluation Performance of the Steam Power Plant in Iraq Based on Energy and Exergy Analysis

Abstract

Al-Mosyab thermal power station in Iraq is the subject of a case study to apply energy and exergy analysis in this presented paper. The methodical equations derived from mass, energy, and exergy balancing equations for each part of the cycle were computed using software Engineering Equation Solver (EES). The exergy analysis shows that the plant's second law efficiency and entire exergy destruction are 34.91% and 412.6 MW, respectively. The boiler experiences the most significant losses since they destroy the most exergy. The effect of the condenser pressure rise and the change in cooling water temperature on the performance of the thermal unit was studied. The thermal and exergy efficiency are reduced by 0.16% and 0.14%, respectively; the net power output decreased by 3.61%, demonstrating the significant impact of condenser pressure on the load produced. As a result of a rise in cooling water inlet temperature, the thermal and second law efficiency decrease by 1.196% and 1.203%, respectively, while the net power decreases by 0.57%.