TY - JFULL AU - Jahedul Islam Chowdhury and Bao Kha Nguyen and David Thornhill and Roy Douglas and Stephen Glover PY - 2015/4/ TI - Modelling of Organic Rankine Cycle for Waste Heat Recovery Process in Supercritical Condition T2 - International Journal of Mechanical and Mechatronics Engineering SP - 476 EP - 482 VL - 9 SN - 1307-6892 UR - https://publications.waset.org/pdf/10000747 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 99, 2015 N2 - Organic Rankine Cycle (ORC) is the most commonly used method for recovering energy from small sources of heat. The investigation of the ORC in supercritical condition is a new research area as it has a potential to generate high power and thermal efficiency in a waste heat recovery system. This paper presents a steady state ORC model in supercritical condition and its simulations with a real engine’s exhaust data. The key component of ORC, evaporator, is modelled using finite volume method, modelling of all other components of the waste heat recovery system such as pump, expander and condenser are also presented. The aim of this paper is to investigate the effects of mass flow rate and evaporator outlet temperature on the efficiency of the waste heat recovery process. Additionally, the necessity of maintaining an optimum evaporator outlet temperature is also investigated. Simulation results show that modification of mass flow rate is the key to changing the operating temperature at the evaporator outlet. ER -