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Thermo-economic optimization during preliminary design phase of organic Rankine cycle systems for waste heat recovery from exhaust and recirculated gases of heavy duty trucks
Guillaume, Ludovic; Legros, Arnaud; Dickes, Rémi et al.
2017In IMechE (Ed.) Vehicle Thermal Management Systems conference
Peer reviewed
 

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Keywords :
Organic Rankine Cycle; Waste Heat Recovery; Heavy Duty Trucks; Thermo-Economic optimization
Abstract :
[en] Waste heat recovery (WHR) Organic Rankine Cycle (ORC) system is a very promising technology for reducing fuel consumption and consequently the CO2 emissions of future heavy-duty trucks (HDT). Nonetheless, the adoption of this technology in the automotive domain requires specific R&D activities going from the system definition to the on-board integration. This study focuses on the preliminary design phase of ORC systems recovering the heat wasted from two of the sources available on a HDT: the exhaust and recirculated gases. From these heat sources and their combinations, 6 possible architectures are identified. On the other hand, 4 volumetric expansion machine technologies are considered (scroll, screw, piston and vane Expanders). At the end, 24 topologies are therefore modelled considering the main components (Pump, Heat exchangers, Expansion machines). A three-step optimization method is proposed to identify the most promising system. First, the most suitable conditions are identified for the design of the ORC systems using a simple model of volumetric expansion machine. In a second step, the design phase, using more detailed models for the expansion machines, a thermos-economic optimization is performed. Finally, in a third step, the output power of the latter system models is maximized in off-design conditions, optimizing the evaporating pressure and the overheating degree.
Research center :
Systèmes énergétiques
Disciplines :
Energy
Author, co-author :
Guillaume, Ludovic ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Legros, Arnaud
Dickes, Rémi ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Lemort, Vincent  ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Language :
English
Title :
Thermo-economic optimization during preliminary design phase of organic Rankine cycle systems for waste heat recovery from exhaust and recirculated gases of heavy duty trucks
Publication date :
2017
Event name :
VTMS 13
Event organizer :
Imeche
Event place :
London, United Kingdom
Event date :
from 17-05-2017 to 18-05-2017
Audience :
International
Main work title :
Vehicle Thermal Management Systems conference
Author, co-author :
IMechE
Peer reviewed :
Peer reviewed
Available on ORBi :
since 30 May 2017

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