Power generation from residual industrial heat

摘要: Industrial plants continuously reject large amounts of thermal energy through warm liquid or gaseous effluents during normal operation. These losses contribute to an inflation production costs and also threaten the environment. This paper investigates methods recovering residual low grade converting it into higher quality mechanical using thermodynamic Rankine cycle principle. For temperature range available energy, water was shown be a poor working fluid for conversion system, thus several potential fluids, including ammonia, synthetic refrigerants, organic compounds have been considered as alternatives. A comparative analysis led identification different performance evaluation criteria. example, water-based and, lesser extent, ammonia-based proved interesting when power generation per unit mass flow rate considered. On other hand, Rankine-like cycles dry hydrocarbon fluids much more in terms efficiency, well net given heat source. All indicators were at temperatures, improved primary source temperatures. discusses influence various external internal operating parameters, such sink turbine pump isentropic efficiencies addition exchanger on overall recovery system.