It is necessary to improve efficiency of energy systems due to lack of fossil fuels in near future and their environmental
issues. Waste heat of industrial activities can be recovered in order to enhance the efficiency of the
energy systems. Organic Rankine cycles (ORCs) are an appropriate option to recover heat from metal smelting
furnaces. In this study, thermodynamic and economic analyses are conducted on an ORC working with the gases
existing a metal smelting furnace by applying different working fluids. Effects of various parameters on the
performance are investigated and the results are compared. Obtained results show that m-xylene, P-xylene and
Ethylbenzene have higher net power output, higher efficiency and lower total cost compared with other investigated
working fluids.
کلید واژگان :
Exergy efficiency; Economic analysis; Power output; Heat recovery
