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Recent Progress in Alkali Nitrate/Nitrite Developments for Solar Thermal Power Applications

Bauer, Thomas and Laing, Doerte and Tamme, Rainer (2011) Recent Progress in Alkali Nitrate/Nitrite Developments for Solar Thermal Power Applications. Molten Salts Chemistry and Technology (MS9), 5 - 9 June 2011, Trondheim, Norway.

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The paper presents recent developments of alternative anhydrous alkali metal and alkaline earth nitrate and nitrite mixtures with low melting temperatures and high thermal stabilities for concentrating solar power (CSP) applications. First, known minimum melting temperatures of the relevant binary and ternary systems are reported. These systems have typical liquidus temperatures above 100 °C. The paper summarizes minimum melting temperatures of subsystems of the quinary reciprocal system Ca, K, Li, Na // NO2, NO3. Own measurements on the quaternary reciprocal system K, Li, Na // NO2, NO3 with a differential scanning calorimeter (DSC) and an optical melting point apparatus (MPA) are reported. Phase diagram details of this system with a minimum liquidus temperature of around 80 °C are presented. Finally, the thermal stability of nitrates, nitrites and minimum melting temperature mixtures are examined by thermogravimetry with coupled gas analysis (mass spectrometer).

Document Type:Conference or Workshop Item (Speech)
Title:Recent Progress in Alkali Nitrate/Nitrite Developments for Solar Thermal Power Applications
AuthorsInstitution or Email of Authors
Bauer, Thomasthomas.bauer@dlr.de
Laing, Doertedoerte.laing@dlr.de
Tamme, Rainerrainer.tamme@dlr.de
Date:June 2011
Refereed publication:No
Keywords:Nitrate, Nitrite, Multi-component, Salt, Phase diagram
Event Title:Molten Salts Chemistry and Technology (MS9)
Event Location:Trondheim, Norway
Event Type:international Conference
Event Dates:5 - 9 June 2011
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 Technical Thermodynamics > Thermal Process Technology
Deposited By: Dr.phil. Thomas Bauer
Deposited On:24 Nov 2011 12:42
Last Modified:12 Aug 2014 09:34

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