Reference : Finite-elements design of a guarded heating cylinder to measure thermal properties of...
Scientific journals : Article
Engineering, computing & technology : Energy
http://hdl.handle.net/2268/20599
Finite-elements design of a guarded heating cylinder to measure thermal properties of materials
English
Nicolas, Jacques mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Surveillance de l'environnement >]
Martin, Fabrice [ > > ]
Andre, Philippe mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Surveillance de l'environnement > >]
Rivez, Jean-François [ > > ]
1990
Review of Scientific Instruments
American Institute of Physics
61
3876-3882
Yes (verified by ORBi)
International
0034-6748
1089-7623
New York
NY
[en] Numerical simulation ; Thickness
[fr] simulation numérique ; conductivité thermique ; matériau
[en] A device for the measurement of thermal properties of phase change materials and, in general, of medium thermal conductivity materials, is described. The measuring cell is a modified version of the guarded hot plate technique, here designed for about 8-cm-diam samples. A well-known difficulty arises in such a device: its limitation when the sample cross section becomes too small with respect to its thickness. A finite-element model is used to study the shape of isotherms in a thick sample (10 cm) for different configurations of the measuring device. This analysis has led to the selection of the optimum design. It shows that the instrument is able to handle samples with a diameter to thickness ratio of about 1 so far as the heat transfer coefficient remains beneath some limits (here 100 W/m2 K). The control system is also described and some typical results are presented. Review of Scientific Instruments is copyrighted by The American Institute of Physics.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/20599
10.1063/1.1141516
http://link.aip.org/link/?RSINAK/61/3876/1

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