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Fluoride salts and container materials for thermal energy storage applications in the temperature range 973 - 1400 KMulticomponent fluoride salt mixtures were characterized for use as latent heat of fusion heat storage materials in advanced solar dynamic space power systems with operating temperatures in the range of 973 to 1400 K. The melting points and eutectic composition for many systems with published phase diagrams were verified, and several new eutectic compositions were identified. Additionally, the heats of fusion of several binary and ternary eutectics and congruently melting intermediate compounds were measured by differential scanning calorimetry. The extent of corrosion of various metals by fluoride melts was estimated from thermodynamic considerations, and equilibrium conditions inside a containment vessel were calculated as functions of the initial moisture content of the salt and free volume above the molten salt. Preliminary experimental data on the corrosion of commercial, high-temperature alloys in LiF-19.5CaF2 and NaF-27CaF2-36MgF2 melts are presented and compared to the thermodynamic predictions.
Document ID
19880024577
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Misra, Ajay K.
(NASA Lewis Research Center Cleveland, OH, United States)
Whittenberger, J. Daniel
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Energy Production And Conversion
Meeting Information
Meeting: IECEC ''87
Location: Philadelphia, PA
Country: United States
Start Date: August 10, 1987
End Date: August 14, 1987
Accession Number
88A11804
Distribution Limits
Public
Copyright
Other

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