Advanced high-temperature molten-salt storage research
We are researching advanced high-temperature molten-salt thermal storage for use in direct absorption receiver and thermal storage (DARTS) solar thermal systems. A molten salt at 900/sup 0/C or higher is both the receiver heat transfer medium and the storage medium; a unique insulated platform (raft) separates the hot and cold medium in the thermocline thermal storage. We have measured raft performance experimentally, and it performs equally or better than a natural thermocline. Containment materials for the molten salts ae being experimentally screened. NaOH has a very high corrosion rate on ceramics and metals. Both carbonates and chlorides can be contained at 900/sup 0/C with relatively little corrosion. Based on the measured corrosion rates, the economic potential of molten-salt thermal storage was analyzed. Both the chlorides and carbonates have potential (i.e., cost less than value) at the capacity of storage expected for commercial-scale solar thermal systems.
- Research Organization:
- Solar Energy Research Inst., Golden, CO (USA)
- DOE Contract Number:
- AC02-77CH00178
- OSTI ID:
- 5793931
- Report Number(s):
- SERI/TP-252-2055; CONF-830974-8; ON: DE84000001
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
142000* -- Solar Energy-- Heat Storage-- (1980-)
ABSORPTION
ALKALI METAL COMPOUNDS
ALLOYS
CARBON COMPOUNDS
CARBONATES
CERAMICS
CORROSIVE EFFECTS
COST
DARTS
DATA
ENERGY STORAGE
EQUIPMENT
EXPERIMENTAL DATA
HEAT STORAGE
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
LATENT HEAT STORAGE
MOLTEN SALT
MOLTEN SALTS
NUMERICAL DATA
OXYGEN COMPOUNDS
PERFORMANCE
SALTS
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SOLAR THERMAL SYSTEMS
STORAGE
THERMAL ENERGY STORAGE EQUIPMENT
THERMAL INSULATION
THERMAL STORAGE