To find in (7) the values of the current or final temperature [[theta].sub.iS] of heating the material of the current-carrying parts of the CCP, determined by Joule heat
from the action of the SC current [i.sub.k(t)] on it, we first use the well-known nonlinear dependence of the specific electrical conductivity [[gamma].sub.i] of the material of the core (shell) of the wire or cable on the value of temperature [[theta].sub.iS] :
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As a consequence the temperature of the cable can be relatively high even for moderate values of the Joule heat
produced in the cable as compared to the same cable in air with natural convection cooling.
In the model it is assumed that all electrical energy is converted to thermal energy by setting the Joule heat
fraction to be equal to one.
Analysis includes comparisons of velocity, temperature, Lorentz force, and Joule heat
The generated joule heat
is the heat source for cooking.
A typical situation is under-loading LEA (steady current value below the rated current) and an atmosphere with temperatures below 0[degrees]C, in the presence of wind, the Joule heat
developed in the current conduction process leading to a temperature lower than the hoar-frost formation temperature (about -5[degrees]C).
The effect of Joule heat
generation at 1 T affects the temperature profile to a lesser extent as the value is of the order of 10- .
On the other hand, Joule heat
density produced in conventional long carbon fibres (i.e., intermediate modulus fibres, IM) is two orders of magnitude larger than that produced in copper.
The heat transfer module governs the joule heat
distribution as given in (1)
By resistance heating this term corresponds to the Joule heat
computed by electric analysis.