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Thermal Conductivity Paper Database

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Recommended Papers for: Steady state

Total Papers Found: 4

Improving speed and precision of using guarded heat flow technique to measure thin specimens

This paper introduces a compensation algorithm and a different-layers calibration method that will improve the temperature measurement speed and thermal resistance elimination of a guarded heat flow meter instrument. Without these additions to the method, heat will travel through a thin slice of material too fast for thermal couples to measure accurately. Thermal contact resistance would cause inaccuracy with a thin slice ...

Author(s): , , , ,

Estimation of the thermal properties of hardened cement paste on the basis of guarded heat flow meter measurements

A new analysis method based on the guarded heat flow meter apparatus is proposed to measure the thermal properties of cement-based pastes in a hydrated form. In a steady state, a specimen with 0.4 water-to-cement ratio was found to have a thermal conductivity and a thermal contact resistance of 1.28Wm−1 K−1 and 0.038 m−2 KW−1. A computerized system of heat flow meters provided non-steady ...

Author(s): , ,

A review on modeling of the thermal conductivity of polymeric nanocomposites

This article is a review of the methods for measuring thermal conductivity including both steady state and transient methods. The article describes the experimental setup for each method, and it gives a brief description of the theory of each method. A review of models that have been developed for the prediction of thermal conductivity of polymeric nanocomposites is also presented....

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Optimization of Instrument Cooling Time for Measuring Thermal Properties with the Thermal Constants Analyzer

This study aimed to determine the effect of instrument temperature cooling time on the accuracy of thermal conductivity measurements. Multiple samples, with varying thermal conductivities, were measured using the Thermal Constants Analyzer, and with five different cooling times. Cooling times, and their effect on the thermal conductivity results were analyzed, and appropriate cooling times were suggested, based on the findings....

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