Energy and exergy analysis of a steam power plant in Jordan |
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| Authors: | Isam H Aljundi |
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| Affiliation: | 1. Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, A.C., Tehran, Iran;2. Department of Renewable Energies, Faculty of New Science and Technologies, University of Tehran, Tehran, Iran;1. Applied Thermodynamic Research Unit UR11ES80, National Engineering School of Gabes, Tunisia;2. Tunisian Chemical Group (TCG), B.P. 72, Gabes 6000, Tunisia;1. Young Researchers and Elite Club, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran;2. Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran;1. Department of Energy Efficiency, Korea Institute of Energy Research, PO Box 103, Yuseong, Daejeon 305343, South Korea;2. Sardar Swaran Singh National Institute of Renewable Energy, Kapurthala 144601, Punjab, India;3. Department of Physics, Manav Rachna College of Engineering, Faridabad 121001, Haryana, India;1. Mechanical Engineering Department, University of Ilorin, P.M.B. 1515, Ilorin, Nigeria;2. Mechanical Engineering Department, University of Agriculture, Abeokuta, Nigeria;3. Agricultural Engineering Department, Ladoke Akintola University of Technology, Ogbomoso, Nigeria;1. Department of Mechanical Engineering, K.N.Toosi University of Technology, Iran;2. Borojerd Branch, Azad University, Iran |
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| Abstract: | In this study, the energy and exergy analysis of Al-Hussein power plant in Jordan is presented. The primary objectives of this paper are to analyze the system components separately and to identify and quantify the sites having largest energy and exergy losses. In addition, the effect of varying the reference environment state on this analysis will also be presented. The performance of the plant was estimated by a component-wise modeling and a detailed break-up of energy and exergy losses for the considered plant has been presented. Energy losses mainly occurred in the condenser where 134 MW is lost to the environment while only 13 MW was lost from the boiler system. The percentage ratio of the exergy destruction to the total exergy destruction was found to be maximum in the boiler system (77%) followed by the turbine (13%), and then the forced draft fan condenser (9%). In addition, the calculated thermal efficiency based on the lower heating value of fuel was 26% while the exergy efficiency of the power cycle was 25%. For a moderate change in the reference environment state temperature, no drastic change was noticed in the performance of major components and the main conclusion remained the same; the boiler is the major source of irreversibilities in the power plant. Chemical reaction is the most significant source of exergy destruction in a boiler system which can be reduced by preheating the combustion air and reducing the air–fuel ratio. |
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