The Thermal Conductivity of Metals at High Temperature

Abstract

The Forbes bar method has been modified and adapted to the problem of measuring the thermal conductivity of metals and alloys in the temperature range from 25°C to 1000°C. A mathematical analysis is presented which indicates the error involved by assuming plane isothermals in the sample. The electrical and thermal conductivities of commercial ``A'' nickel, inconel, several stainless steel alloys, and 1010 steel are reported, and the results are compared, qualitatively at least, with the theory presented by Wilson1 and Makinson.2

Investigating radiation-induced segregation on intragranular defects in a 316L(N)

“…Where the thermal conductance kT is equal to 0.209 W.cm -1 .K -1 [65] and the specific heat CT is equal to 1.52 W.s.g-1.K-1 [66] at 450°C, the density ρ was taken to be equal to 7.96 g.cm -3 and t is the time in seconds. The beam power density J (in W.cm -2 ) is given by : 𝐽 = 𝛷 × 𝐸 × 𝑒 (A-2)…”

Heat transfer enhancement in circular tubes using helical swirl generator insert at the entrance

“…The thermal conductivity of test tube is a strong function of temperature. Its functional dependence on temperature was obtained from the work of Hogan [17]. The bulk temperature at each position was computed assuming a linear variation along the heated length, and heat transfer coefficient was then found from the following equation,…”