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Öğe Analysis of an Electric Arc Furnace Used for Casting of Steel: An Exergy Approach(Springer, 2020) Camdali, U.; Tunc, M.; Arasil, G.An electric arc furnace with a liquid steel capacity of 30 t was analyzed using the second law of thermodynamics. To carry out the exergy analysis, materials and energies entering and exiting the electric arc furnace were determined. The materials included several types of scrap, cokes, fluxes, oxygen, liquid steel, stack gases, and dust. Electrical and exothermic chemical energies of these materials were considered. Energies of the materials leaving the furnace, including liquid steel, slag, stack gases, and dust, were determined, as were the chemical reactions and exergies entering and leaving the electric arc furnace. Exergy efficiency and lost exergy were calculated. It was found that 42.6% of exergy is lost because of the chemical reactions, heat transfer, and other reasons. The overall exergy efficiency of the entire system was found to be 46%.Öğe Calculation of Chemical Reaction Energy in an Electric Arc Furnace and Ladle Furnace System(Springer, 2016) Camdali, U.; Tunc, M.In this study, exothermic and endothermic chemical reactions are determined for an electric arc furnace (EAF) and a ladle furnace, and their chemical energies are calculated taking account of input and output materials from the EAF.Öğe Energy Analysis of the Operation of an Electric-Arc Furnace at a Steel Company in Turkey(Springer, 2015) Tunc, M.; Camdali, U.; Arasil, G.This article reports the results of an energy analysis, based on the first law of thermodynamics, that was performed for an electric-arc furnace (EAF) at a Turkish company. The first step in the analysis was determining the forms in which energy enters the furnace - electrical energy, and chemical energy generated by an exothermic reaction. Then the forms in which energy leaves the furnace were determined: the energy transported out of the EAF by liquid steel, slag, dust, metal particles in the slag, furnace gases, and coolant water. The amounts of heat lost from the EAF and the electrodes by conduction, convection, and radiation were determined by using the appropriate equations in the scientific literature.