Internal Shape Factor Of Straight Wires Sheathed Electrical
Heating Elements
Author(s)
S. Lalot
Abstract
Internal shape factor of straight wires
sheathed electrical heating elements
S. Lalot
METIER, EIPC, Campus de la Malassise, BP 39,
F-62967 Longuenesse Cedex, France
Abstract
This paper focuses on the study of the internal shape factor of sheathed electrical
heating elements. In the first of the study, the geometries are presented and three
dimensionless parameters are introduced. Then examples of temperature fields
are given. The analysis of finite elements simulations leads to the proposition of
an analytical expression of the dimensionless internal shape factor. The use of
shape factors avoid confidentiality problems. During this analysis a forth
dimensionless shape factor is introduced. Taking advantage of the simulations, a
non uniformity factor is proposed and it is shown that this non uniformity is in all
cases inferior to 16%, and in most cases inferior to 2%.
In the second part of the study, considering that experimental results have led to
the determination of the thermal con
Keywords
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