Reference : Scale law on energy efficiency of electrocaloric materials
Dissertations and theses : Doctoral thesis
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
http://hdl.handle.net/10993/52452
Scale law on energy efficiency of electrocaloric materials
English
Nouchokgwe Kamgue, Youri Dilan mailto [University of Luxembourg > Faculty of Science, Technology and Medecine (FSTM) > > ; Luxembourg Institute of Science & Technology - LIST > Materials Research and Technology > Ferroic Materials for Transducers]
9-Sep-2022
University of Luxembourg, ​Esch-sur-Alzette, ​​Luxembourg
DOCTEUR DE L’UNIVERSITE DU LUXEMBOURG EN PHYSIQUE
178
Defay, Emmanuel mailto
Redinger, Alex mailto
Bahl, Christian mailto
Ursic, Hana mailto
Lloveras, Pol mailto
[en] electrocalorics ; energy efficiency ; materials efficiency
[en] Caloric materials are suggested as energy-efficient refrigerants for future cooling devices.
They could replace the greenhouse gases used for decades in our air conditioners, fridges,
and heat pumps. Among the four types of caloric materials (electro, baro, elasto, magneto caloric), electrocaloric materials are more promising as applying large electric fields is
much simpler and cheaper than the other fields. The research in the last years has been
focused on looking for electrocaloric materials with high thermal responses. However, the
energy efficiency crucial for future replacement of the vapor compression technology has
been overlooked. The intrinsic efficiency of electrocaloric has been barely studied. In the
present dissertation, we will study the efficiency of EC materials defined as materials efficiency. It is the ratio of the reversible electrocaloric heat to the reversible electrical work
required to drive this heat. In this work, we will study the materials efficiency of the benchmark lead scandium tantalate in different shapes (bulk ceramic and multilayer capacitors).
A comparison to other caloric materials is presented in this dissertation. Our work gives
more insights on the figure merit of materials efficiency to further improve the efficiency of
our devices.
Luxembourg Institute of Science & Technology - LIST
Fonds National de la Recherche - FnR
CAMELHEAT C17/MS/11703691/Defay
Researchers ; Professionals ; Students ; General public ; Others
http://hdl.handle.net/10993/52452
FnR ; FNR11703691 > Emmanuel Defay > CAMELHEAT > Caloric Materials: Electrical Efficiency And Heat Conductivity > 01/09/2018 > 31/08/2021 > 2017

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