A recent study of the design of solar distillation with solar radiation concentration was carried out by an independent device. Transformer oil was used as a fluid to transfer heat to the distilled basin. The design and operational variables are essential, such as distiller dimensions, concentration ratio, pressure, and temperature. A mathematical model was proposed to simulate the system for 2 July 2018 from 10 AM to 4 PM in the climatic conditions of the city of Kirkuk, Iraq. Fuzzy logic (FL) was used to select the affected parameters: water temperature (T w ), water pressure (P w ), glass temperature (T g ), and vapor pressure (P g ) which have a separated membership function that control the linguistic variables. The results showed that the best performance of the distiller is at T w = 100°C, P g = 10 000 Pa, T g = 20°C, and P w = 20 000 Pa, and concentration ratio of 30. This study used FL to analyze solar distiller performance and identify optimum temperature, pressure, and concentration ratio on the productivity of solar distiller. K E Y W O R D Sconcentric solar collector, fuzzy logic control, solar distiller

Exergy and energy analyses were carried out in each component to study the effect of compression ratio, ambient temperature, and load on energy losses and exergy destruction. The highest exergy destruction occurred in the combustion chamber and the lowest exergy destruction occurred in the compressor. Also, the maximum thermal efficiency of the gas turbine unit and second law efficiency are 33.77% and 32.25%, respectively. The peak load of the selected power station is 65 MW. This study reveals possible areas of focus to improve performance of the power plant in the future. K E Y W O R D Scombustion chamber, compression ratio, exergy destruction, gas turbine, second law efficiency | INTRODUCTIONElectrical power is vital for comfortable life, urban development, agricultural development, and industrial progress in all societies. As a result of the depletion of conventional energy sources and the continuous increase in the human need for energy, it is necessary to utilize electricity effectively and to search for alternate ways of meeting future energy requirements. Therefore, many countries focus on republishing the economic policy as well as intensify studies on strategies for improving performance of power stations. 1 Performance evaluation of power plant alone does not meet the purpose, so we resort to the analysis of exergy because it is more comprehensive. Several researches adopt analysis as a basis of conducting analytical studies across major components of thermal power plants and reducing the reflectivity in these parts. It is possible to obtain better performance by measuring the accuracy of gravity and positioning according to the second law of thermodynamics. 2,3 Reflections represent the difference between real disposable work and reflective work. 4-6 Therefore, researchers reduce this difference as much as possible 7,8 to know the main

No abstract

No abstract

Because of the increasing demand for energy in the recent period, it has become necessary to intensify the study in the field of evaluating the performance of the gas station under the first and second laws efficiency. The energy and exergy losses of gas stations are represented by the compressor, combustion chamber, and turbine. Therefore, this work aims to analyze the energy and exergy of a 55 MW Taza gas power station. The investigation demonstrated that the most significant misfortunes of the exergy happened in the combustion chamber, where was 66.5MW the most minimal misfortunes in the compressor 5MW while the misfortunes in the turbine 8.4MW. The thermal efficiency of the gas turbine power plant was 33.06%, while the exergy efficiency was 32.39%. The novelty of the current work concentrated on obtaining the Grassmann graph for each component.