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Status
Electronic Resource
Call number
Publication
DOE NASA 0156 83 1; Report; July 1983.
Language
Library's review
ABSTRACT:
Experimental results of compatibility screening studies of 100 salt/ containment/thermal conductivity enhancement (TCE) combinations for the high-temperature solar thermal application range of 704° to 871°C (1300° to 1600°F) are presented. Nine candidate containment/RX alloy materials
A need for more reliable, and in some cases first-time-determined, thermophysical and transport property data was also identified for molten carbonates in the 704° to 871°C temperature range. In particular, accurate melting point (mp) measurements were performed for Li 2co 3 and NazC03 while melting point, heat of fusion, and specific heat determinations were conducted on 81.3 weight percent Na2co 3-1s.7 weight percent K2co3 and 52.2 weight percent Baco3-47.8 weight percent,Na 2co3 to support future TES system design and ultimate scale-up of solar thermal energy storage (TES) subsystems.
Experimental results of compatibility screening studies of 100 salt/ containment/thermal conductivity enhancement (TCE) combinations for the high-temperature solar thermal application range of 704° to 871°C (1300° to 1600°F) are presented. Nine candidate containment/RX alloy materials
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and two TCE materials were tested with six candidate solar thermal alkali and alkaline earth carbonate storage salts (both reagent- and technical-grade of each). Compatibility tests were conducted with salt encapsulated in ~6.0-inch x 1-inch welded containers of test material from 300 to 3000 hours. Compatibility evaluations were end-application oriented, considering the potential 30-year lifetime requirement of solar thermal power plant components. Analyses were based on depth and nature of salt-side corrosion of materials, containment alloy thermal aging effects, weld integrity in salt environment, air-side containment oxidation, and chemical and physical analyses of the salt.A need for more reliable, and in some cases first-time-determined, thermophysical and transport property data was also identified for molten carbonates in the 704° to 871°C temperature range. In particular, accurate melting point (mp) measurements were performed for Li 2co 3 and NazC03 while melting point, heat of fusion, and specific heat determinations were conducted on 81.3 weight percent Na2co 3-1s.7 weight percent K2co3 and 52.2 weight percent Baco3-47.8 weight percent,Na 2co3 to support future TES system design and ultimate scale-up of solar thermal energy storage (TES) subsystems.
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