Waste Heat Recovery Using Organic Rankine Cycle

Abstract

A considerable amount of heat is wasted in many industrial plants at  levels which produce difficulties recovering that wasted heat. Nowadays, Organic Rankine Cycle (ORC) poses a good solution for waste heat recovery. In this research, and through multiple software, we have chosen the appropriate working fluid for ORC to be tested and worked out among a range of wet and isentropic working fluids available to us in the domestic market, the research also showed that The R141b as a working fluid gives the best thermodynamic performance. A test bench for the ORC has been developed using R141b, which resulted in a thermal efficiency of about 2.24% due to the low efficiency of the equipment. In spite of the low thermal efficiency of ORC, it is effective in heat recovery processes. If we use this cycle to recover waste heat from the flue gases at Tishreen Plant using R141b, we can obtain electrical power of up to 2 MW.