Article (Scientific journals)
Waste Heat Recovery by Means of Organic Rankine Cycle (ORC) System Coupled with Two-Phase Closed Thermosyphons
Le, Van Long; Declaye, Sébastien; Dumas, Xavier et al.
2017In International Journal of Thermodynamics
Peer reviewed
 

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Keywords :
Waste heat recovery; ORC; two-phase closed thermosyphon; performance evaluation
Abstract :
[en] This paper aims at assessing the performance of a waste heat-to-power plant by means of an ORC (Organic Rankine Cycle) system coupled with two-phase closed thermosyphons (or gravity-assisted heat pipes or wickless heat pipes). The heat exchanger, made up of two-phase closed thermosyphons, is used for conveying heat from exhaust stream to ORC working fluid. In reality, a hot oil loop or a pressurized hot water loop or a saturated ste am loop or even a direct evaporator is often used to transfer heat from the heat source to the ORC system. However, installing a heat exchanger directly in the hot gas paths of ORC system evokes the concerns for the flammability and/or toxicity of organic working fluids especially when the heat source has a relatively high temperature. Also the use of an intermediate heat carrier loop such as thermal oil or saturated steam or pressurized water loop is costly and involves installation of comparatively heavy components. In principle, the use of two-phase closed thermosyphons for capturing and transporting heat from a waste heat source to organic working fluid is less expensive than utilizing an intermediate heat transfer loop and eliminates safety issues as in the case of direct installation of an ORC evaporator in the hot gas paths.
Research center :
Laboratoire de Thermodynamique
Disciplines :
Energy
Author, co-author :
Le, Van Long ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Declaye, Sébastien ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Dumas, Xavier;  CMI Group > CMI Industry
Ferrand, Ludovic;  CMI Group > CMI Industry
Lemort, Vincent  ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Language :
English
Title :
Waste Heat Recovery by Means of Organic Rankine Cycle (ORC) System Coupled with Two-Phase Closed Thermosyphons
Publication date :
01 June 2017
Journal title :
International Journal of Thermodynamics
ISSN :
1301-9724
eISSN :
2146-1511
Publisher :
International Centre for Applied Thermodynamics, Istanbul, Turkey
Peer reviewed :
Peer reviewed
Name of the research project :
ORCAL
Funders :
SPW DGO6 - Service Public de Wallonie. Economie, Emploi, Recherche [BE]
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