Thermal conductivity measurements using a short transient hot-strip method

Abstract

Determination of the thermalconductivity tensor and the heat capacity of insulating solids with the transient hotstrip method

A new method for the evaluation of thermal conductivity and thermal diffusivity from transient hot strip measurements

“…This material has been studied widely [5][6][7][10][11][12][13][14][15][16][17] and is especially useful for qualification measurements. The thermal conductivity and the thermal diffusivity of this particular Pyrex glass were measured in the temperature interval between 191 and 473 K. The temperature coefficient of the electrical resistance of the nickel strip used was calibrated in this temperature range.…”

“…Furthermore, it is assumed that the function f(r)can be estimated to be .f(r)~ r-r"/(4rt) I/-" for r <0.7, and the set of data reduced to this range can be described by the square polynomial (1= Uo + A(t + to) I/2 + B(t+ to). This term leads directly to the time delay t o [3][4][5]. Finally, the two other parameters, Uo and k, can be excluded analytically so that only the quantity a must be fitted.…”

On the Use of the Transient Hot-Strip Method for Measuring the Thermal Conductivity of High-Conducting Thin Bars

“…In addition, the assumed output of power P 0 must also be doubled. Reference [20] describes this procedure in detail.…”

“…With the short transient hot-strip (STHS) technique [20], a symmetric two-dimensional (2D) thermal profile in accordance with the basic THS theory is achieved by thermally insulating a thin cut-out cross section of the imagined sample, where symmetry boundaries in the original configuration can be replaced by mirroring surfaces. In this way, a small sample can be used to simulate a thermal conductivity experiment of a much larger sample.…”

A non-parametric method for estimating enthalpy-temperature functions of shape-stabilized phase change materials

“…For instance, thermal conductivity and thermal diffusivity can be measured, respectively, by the guarded hot plate method [1] and the flash method [2,3]. Dynamic hot probes methods allow simultaneous determination of thermal conductivity and capacity [4][5][6][7]. As for specific heat and latent heat, separate and specific DSC (differential scanning calorimetric) tests are usually used [8,9].…”