In this paper, a linear active disturbance rejection controller is proposed for a waste heat recovery system using an organic Rankine cycle process, whose model is obtained by applying the system identification technique. The disturbances imposed on the waste heat recovery system are estimated through an extended linear state observer and then compensated by a linear feedback control strategy. ...

In this paper, a new combined system is proposed for recovering thermal energy at medium temperature using cascade organic Rankine cycle to feed refrigeration cycle. Energy and exergy analysis applied the determine its performance different working fluids under same operating conditions taking into account effect of some parameters selection on performance. The pair fluid
 (Toluene/R245fa)...

The use of nanorefrigerants in Organic Rankine Cycle (ORC) units is believed to affect the cycle environment performance, but backed with very few relevant studies. For this purpose, a life assessment (LCA) has been performed for ORC system using nanorefrigerant, material and energy input, characteristic indicators comprehensive index environmental impact, total consumption payback time (BPBT) ...

In this publication, we present an energy and exergy analysis of the Szewalski binary vapor cycle based on a model of a supercritical steam power plant. We used energy analysis to conduct a preliminary optimization of the cycle. Exergy loss analysis was employed to perform a comparison of heat-transfer processes, which are essential for hierarchical cycles. The Szewalski binary vapor cycle cons...