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Characterization of Sodium Nitrate as Phase Change Material

Bauer, Thomas and Laing, Dörte and Tamme, Rainer (2011) Characterization of Sodium Nitrate as Phase Change Material. International Journal of Thermophysics (Online First). Springer. doi: 10.1007/s10765-011-1113-9.

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Official URL: http://www.springerlink.com/content/yn75588065857203/


In this article the results of material investigations of sodium nitrate (NaNO3) with a melting temperature of 306 ◦C as a phase change material (PCM) are presented. The thermal stability was examined by kinetic experiments and long-duration oven tests. In these experiments the nitrite formationwas monitored. Although some nitrite formation in the melt was detected, results show that the thermal stability ofNaNO3 is sufficient for PCMapplications.Various measurements of thermophysical properties of NaNO3 are reported. These properties include the thermal diffusivity by the laser-flash, the thermal conductivity by the transient hot wire, and the heat capacity by the differential scanning calorimeter method. The current measurements and literature values are compared. In this article comprehensive temperature-dependent thermophysical values of the density, heat capacity, thermal diffusivity, and thermal conductivity in the liquid and solid phases are reported.

Item URL in elib:https://elib.dlr.de/60889/
Document Type:Article
Title:Characterization of Sodium Nitrate as Phase Change Material
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Bauer, Thomasthomas.bauer (at) dlr.deUNSPECIFIED
Date:November 2011
Journal or Publication Title:International Journal of Thermophysics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1007/s10765-011-1113-9
Keywords:Hot wire, Laser-flash, Phase change material, Sodium nitrate · Thermal energy storage
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E EV - Energy process technology (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Thermochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Bauer, Dr.phil. Thomas
Deposited On:24 Nov 2011 13:10
Last Modified:26 Mar 2013 13:12

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