Abstract
In this study, the energy and exergy analysis of Garri 4 power plant in Sudan is presented. The primary objective of this paper is to identify the major source of irreversibilities in the cycle. The equipment of the power plant has been analyzed individually. Values regarding heat loss and exergy destruction have been presented for each equipment. The results confirmed that the condenser was the main source for energy loss (about 67%), while exergy analysis revealed that the boiler contributed to the largest percentage of exergy destruction (about 84.36%) which can be reduced by preheating the inlet water to a sufficient temperature and controlling air to fuel ratio.
Highlights
The energy demand is expected to rise 58% from 2001 to 2025 [1] and due to the high prices of energy and the decreasing fossil fuel recourses, the optimum application of energy and the energy consumption management methods are so crucial.In many countries, steam power plant cycles have been discarded from the power generation cycle due to their low efficiency, environmental pollution, and especially insufficient fossil fuel resources, and have been replaced by power plants with high efficiency and economical and technical justification
There is increasing interest in the combined utilization of the first and second laws of thermodynamics, using such concepts as exergy and exergy destruction to evaluate the efficiency with which the available energy is consumed
Exergy analysis has become a key issue in providing a better understanding of the processes, quantifying sources of inefficiency, and distinguishing the quality of energy consumption
Summary
The energy demand is expected to rise 58% from 2001 to 2025 [1] and due to the high prices of energy and the decreasing fossil fuel recourses, the optimum application of energy and the energy consumption management methods are so crucial.In many countries, steam power plant cycles have been discarded from the power generation cycle due to their low efficiency, environmental pollution, and especially insufficient fossil fuel resources, and have been replaced by power plants with high efficiency and economical and technical justification. Analysis of power generation systems is of scientific interest and essential for the efficient utilization of energy resources. The most commonly used method for the analysis of an energy conversion process is the first law of thermodynamics. There is increasing interest in the combined utilization of the first and second laws of thermodynamics, using such concepts as exergy and exergy destruction to evaluate the efficiency with which the available energy is consumed. Exergy analysis based on the first and second thermodynamics laws is a significant tool to analyze energy systems. In 2019 the actual generation from Thermal power plants was 5760.32 GWh which forms 54 % of the available capacity
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