Development and optimization of climate- and energy related models in electromobility using thermal comfort and CFD
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Typ
Examensarbete för masterexamen
Program
Sustainable energy systems (MPSES), MSc
Publicerad
2022
Författare
Löseth, Ola
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Increasing environmental pressure on the automotive industry has resulted in growing
efforts to develop sustainable alternatives, among them electric vehicles. Climatization
of electric vehicles has been shown to be energy intensive as electric motors
do not produce much waste heat. As a result, optimizing the cabin climatization is
of great importance, and the purpose of this thesis project is to provide a method
capable of evaluating the climate of a vehicle cabin. This project is in collaboration
with CEVT, an innovation center that is strongly connected to the vehicle industry.
The objective of the thesis is to develop a method that, with the utilization of computational
fluid dynamics and thermal comfort modeling, can evaluate the cabin
climate to enable energy optimization of the thermal system. The method is developed
by utilizing and combining CFD and thermal solvers with the Berkeley Comfort
Model to build a virtual cabin environment that can predict the thermal comfort
of cabin occupants. The cabin model is also integrated into a system simulation
environment representative of the complete vehicle thermal system. The project
resulted in a simulation environment capable of assessing the thermal comfort of
passengers occupying the vehicle cabin. Furthermore, the study has indicated that
the climatization process can be adjusted based on the clothing of the passengers to
obtain a significant decrease in energy use.
Beskrivning
Ämne/nyckelord
climatization , electric vehicle , CEVT , cabin climate , modeling , CFD , heat transfer , Berkeley Comfort Model , thermal comfort