Improving the efficiency of seawater desalination and power generation gas turbine plants

In light of the water and energy crises around the world in general and Libya in particular, and the constant endeavor to provide visions and solutions to resolve these crises. This study is one of the efforts to contribute to this topic, as the study aims to increase the efficiency of a desalination plant that operates with gas turbines. The study aims to increase the efficiency of the total plant (the desalination plant that operates with turbines) by using part of the exhaust gas resulting from operating the turbines in the presence of a combined cycle. The study also aims to clarify how this can be applied to raise the efficiency of the total station, taking into account achieving the highest efficiency, the lowest cost rate, and the lowest environmental pollution rate while maintaining the default for the station. This was done through different methodologies, as the descriptive method was used. To describe the variables and data, the quantitative and scientific methodology in collecting data, determining the applied framework, and the comparison methodology in comparing the results. The analysis methodology was also used to analyze and evaluate the results. The results indicated that the best way to raise the station's overall efficiency is to use the combined cycle with a higher percentage of exhaust gas. The obtained efficiency is 34.5%, with a total cost of 20% and an emissions rate of 35%, while maintaining the plant's life span as 35% of the exhaust gas was used. Keywords: desalination plant; Gas turbines; exhaustive Gas; combined cycle; efficiency; pollution rate; life Span.