Imperial College London

ProfessorChristosMarkides

Faculty of EngineeringDepartment of Chemical Engineering

Professor of Clean Energy Technologies
 
 
 
//

Contact

 

+44 (0)20 7594 1601c.markides Website

 
 
//

Location

 

404ACE ExtensionSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Le:2015:10.1007/s10765-015-1986-0,
author = {Le, Brun N and Markides, CNM},
doi = {10.1007/s10765-015-1986-0},
journal = {International Journal of Thermophysics},
pages = {3222--3238},
title = {A Galinstan-Filled Capillary Probe for Thermal Conductivity Measurements and its Application to Molten Eutectic KNO3-NaNO3-NO2 (HTS) up to 700 K},
url = {http://dx.doi.org/10.1007/s10765-015-1986-0},
volume = {36},
year = {2015}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - The successful measurement of the thermal conductivity of molten salts isa challenging undertaking due to the electrically conducting and possibly alsoaggressive nature of the materials, as well as the elevated temperatures atwhich these data are required. For accurate and reproducible measurementsit is important to develop a suitable experimental apparatus and methodology.In this study we explore a modified version of the transient hot-wiremethod, which employs a molten-metal-filled capillary in order to circumventsome of the issues encountered in previous studies. Specifically, by using anovel flexible U-shaped quartz-capillary, filled with a eutectic mixture of gallium,indium and tin, commercially known as Galinstan, we proceed to measurethe thermal conductivity of molten eutectic KNO3−NaNO3−NaNO2.The new probe is demonstrated as being able to measure the thermal conductivityof this molten salt, which is found to range from 0.48 W/m K at500 K to 0.47 W/m K at close to 700 K, with an overall expanded uncertainty(95% confidence) of 3.1%. The quartz is found to retain its electricallyinsulating properties and no current leakage is detected in the sample overthe investigated temperature range. The thermal conductivity data reportedin the present study are also used to elucidate a partial disagreement foundin the literature for this material.
AU - Le,Brun N
AU - Markides,CNM
DO - 10.1007/s10765-015-1986-0
EP - 3238
PY - 2015///
SN - 1572-9567
SP - 3222
TI - A Galinstan-Filled Capillary Probe for Thermal Conductivity Measurements and its Application to Molten Eutectic KNO3-NaNO3-NO2 (HTS) up to 700 K
T2 - International Journal of Thermophysics
UR - http://dx.doi.org/10.1007/s10765-015-1986-0
UR - http://hdl.handle.net/10044/1/27461
VL - 36
ER -