Energy and exergy analysis of solar driven recuperated organic Rankine cycle using glazed reverse absorber conventional compound parabolic concentrator (GRACCPC) system

Abstract

In this research work, the computer code is written in MATLAB 9.0 which is interfaced with Refprop 9.0. in order to develop a thermodynamic model of solar driven organic Rankine cycle. A novel glazed reverse absorber conventional compound parabolic concentrator integrated with recuperated organic Rankine cycle {case (ii)} using low global warming potential and zero ozone depletion potential working fluid cyclohexane/R245fa has been proposed. The coding has been done to evaluate hourly concentrator fluid outlet temperature, heat gain in concentrator, expander output, overall thermal efficiency, overall exergetic efficiency and exergy destruction. The performance of the glazed reversed absorber conventional compound parabolic concentrator integrated with recuperated organic Rankine cycle {case (ii)} has been compared with glazed reversed absorber compound parabolic concentrator with non recuperated organic Rankine cycle {case (i)}. It is observed that overall first law efficiency improves by 40.9% and exergetic efficiency 36.28% using recuperated organic Rankine ORC {case (ii)} in comparison of non-recuperated ORC {case (i)}. The system in case {ii} has been found to be self-sustainable system and gives better result in term of thermal efficiency, environmental, space heating, day lighting and electricity use. © 2017 Elsevier Ltd