Modelling of Organic Rankine Cycle for Waste Heat Recovery Process in Supercritical Condition

Jahedul Islam Chowdhury, Bao Kha Nguyen, David Thornhill, Roy Douglas, Stephen Glover

Research output: Contribution to conferencePaper

Abstract

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.
Original languageEnglish
Publication statusPublished - 27 Mar 2015
EventThe 17th International Conference on Mechanical, Materials and Mechatronics Engineering - Madrid, Spain
Duration: 26 Mar 201427 Mar 2014

Conference

ConferenceThe 17th International Conference on Mechanical, Materials and Mechatronics Engineering
CountrySpain
CityMadrid
Period26/03/201427/03/2014

Keywords

  • organic Rankine cycle
  • supercritical condition

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