RT info:eu-repo/semantics/article
T1 Methodology for measuring the thermal conductivity of insulating samples with small dimensions by heat flow meter technique
A1 Sánchez Calderón, Ismael
A1 Merillas Valero, Beatriz
A1 Bernardo García, Victoria
A1 Rodríguez Pérez, Miguel Ángel
K1 Thermal conductivity
K1 Heat fux
K1 Heat fow meter
K1 Thermal insulator
K1 22 Física
K1 2210 Química Física
AB Nowadays, developing advanced, highly insulating materials for minimizing heat losses in buildings is of utmost relevance. Thus, there is a constant research activity focused on developing new and enhanced solutions for thermal insulation. However, characterizing the behavior of new thermal insulation materials, usually produced at lab-scale with small dimensions, by a steady-state approach is a challenge. The reason is that commercial heat fow meters require large samples (hundred on mm side) to provide accurate results of thermal conductivity because they are based on international standards. In this work, a new methodology to measure the thermal conductivity of small prototypes of thermal insulating materials (as low as 50×50 mm2) is developed by using an external heat fow sensor placed into a standard heat fow meter apparatus. Four diferent thermal insulators were used to validate the developed methodology by performing measurements in the heat fow meter with and without the external sensor. From these results, a calibration curve that relates both methods was calculated. Furthermore, the efect of the sample size was studied to explore the limits of the technique. Results show that the self-developed method is an accurate procedure to determine the thermal conductivity of samples with small dimensions via a steady-state condition.
PB Springer
SN 1388-6150
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/54408
UL https://uvadoc.uva.es/handle/10324/54408
LA eng
NO Journal of Thermal Analysis and Calorimetry, 2022.
NO Producción Científica
DS UVaDOC
RD 22-nov-2024