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Status
Electronic Resource
Call number
Publication
SAND Report: SAND82-8203, January 1982.
Collection
Language
Library's review
ABSTRACT:
This report documents the preliminary examination of the use of solid carriers, e.g., pebbles or sand, as both a working fluid and storage medium for high temperature (T 600C) solar receivers. Advantages of such a scheme include direct absorption of the incident radiation, direct heat
This report documents the preliminary examination of the use of solid carriers, e.g., pebbles or sand, as both a working fluid and storage medium for high temperature (T 600C) solar receivers. Advantages of such a scheme include direct absorption of the incident radiation, direct heat
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transfer, use of the working fluid as a storage medium, and ease of hybridizing with a fossil-fired system. Key parameters and materials concerns for solar as well as for commercial fossil-fired sand or pebble heaters are identified and discussed. Commercial experience in the fuels and chemical industries attests to the technical and economic viability of this concept, while also defining the most significant materials issue: breaking of the thermal carrier. Subsequent analysis indicates that the problem may be mitigated by careful selection/ development of carrier material and processing. Future R&D directions are briefly discussed. Show Less