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Assessment of Rankine Waste Heat Recovery Potential on Heavy Duty Trucks Using Direct Condensation
Galuppo, Francesco; Reiche, Thomas; Lemort, Vincent et al.
2019In Proceedings of the 5th International Seminar on ORC Power Systems
Peer reviewed
 

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Keywords :
ORC; heavy duty truck; waste heat recovery
Abstract :
[en] Upcoming regulations on CO2 emissions for heavy duty trucks and increasing fuel prices lead the truck manufacturers to adopt new solutions to reduce fuel consumption. The Organic Rankine cycle (ORC) is a promising technology that can contribute to achieve such a goal. Rankine cycle waste heat recovery on heavy duty trucks has been studied over the past decade by focusing on fluid selection, modeling, control and components development. Cost, integration and up-time are also considered important aspects for a future series production. The objective of this study is to evaluate the performance of a Rankine system by simulating road cycles on a complete truck simulation environment (Exhaust after treatment system, as well as cooling system and the energy management of the mild-hybrid driveline are modeled). The Rankine system uses exhaust gas flow as heat source, an air cooled condenser and a volumetric expansion machine. Two working fluids are selected for this study; ethanol and cyclopentane. The dynamic equations used for Rankine component modeling are provided and a particular attention is dedicated to the condenser and fan models. In order to ensure complete condensation of the working fluid, two controllers are implemented to track a set-point on subcooling at the condenser outlet by acting on the fan speed and the condensing pressure. Afterwards a comparative study is carried out to assess the relative potential of the two fluids using direct condensation.
Disciplines :
Energy
Author, co-author :
Galuppo, Francesco
Reiche, Thomas
Lemort, Vincent  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Dufour, Pascal
Nadri, Madiha
Language :
English
Title :
Assessment of Rankine Waste Heat Recovery Potential on Heavy Duty Trucks Using Direct Condensation
Publication date :
September 2019
Event name :
5th International Seminar on ORC Power Systems
Event organizer :
KCORC
Event place :
Athènes, Greece
Event date :
du 9 septembre 2019 au 11 septembre 2019
Audience :
International
Main work title :
Proceedings of the 5th International Seminar on ORC Power Systems
Peer reviewed :
Peer reviewed
Available on ORBi :
since 14 October 2019

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