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Faculté des Sciences appliquées
Faculté des Sciences appliquées
MASTER THESIS
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Final work :Experimental and numerical characterization of an ORC cycle for an automotive application

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Sebastián Muñoz, César ULiège
Promotor(s) : Lemort, Vincent ULiège
Date of defense : 28-Jun-2022/29-Jun-2022 • Permalink : http://hdl.handle.net/2268.2/14223
Details
Title : Final work :Experimental and numerical characterization of an ORC cycle for an automotive application
Author : Sebastián Muñoz, César ULiège
Date of defense  : 28-Jun-2022/29-Jun-2022
Advisor(s) : Lemort, Vincent ULiège
Committee's member(s) : Dumont, Olivier ULiège
Rehman, Danish 
Language : English
Discipline(s) : Engineering, computing & technology > Aerospace & aeronautics engineering
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master en ingénieur civil en aérospatiale, à finalité spécialisée en "turbomachinery aeromechanics (THRUST)"
Faculty: Master thesis of the Faculté des Sciences appliquées

Abstract

[en] As a result of increasing environmental awareness, the European Union has implemented new rules. The automotive industry is working on new technologies to reduce its emissions. The Organic Rankine Cycle is one solution that has been studied during the last years as a technology to use the waste heat from the engines. Current work deals with designing, fabricating, and testing an ORC cycle to exploit the waste heat of 4.6kW, available from the coolant of an electric car. For that, a steady analysis is performed under ideal conditions to decide on the refrigerant and on the components to be purchased to later work in a test campaign. R134a is chosen as the cycle refrigerant, due to its superior performance and less cost compared to other refrigerants considered in this study. This campaign was carried out during the execution of the thesis and gave a clear idea of the suitability of the solution. A total of 43 steady points have been collected during the experimental campaign in which the evaporating temperature was in the range of 58.5 to 69.3 $\degree$C. Due to poor performance of the pump, global cycle efficiencies were negative. A maximum of 90W could be extracted from the expander due to limited pressure ratios that could be achieved with the pump. Further analysis has shown that the expander employed is oversized for the nominal volumetric flow. At the maximum rpm of the pump, which is 3300 rpm, gross efficiency of the cycle was measured to be 1.9%. Limitations of the current setup and suggestions to improve are also discussed.


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Access TFE_Cesar_Sebastian_ULiege.pdf
Description: TFE
Size: 37.65 MB
Format: Adobe PDF
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Access TFE_Summary_Cesar_Sebastian.pdf
Description: Summary
Size: 5.66 MB
Format: Adobe PDF

Author

  • Sebastián Muñoz, César ULiège Université de Liège > Master ingé. civ. aérospat., à fin. (THRUST)

Promotor(s)

Committee's member(s)

  • Dumont, Olivier ULiège Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes énergétiques
    ORBi View his publications on ORBi
  • Rehman, Danish
  • Total number of views 67
  • Total number of downloads 0










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