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Title: Evaluation of thermal-energy storage media for advanced compressed-air energy-storage systems

Conference ·
OSTI ID:6651157

Proposed designs of adiabatic and hybrid compressed air energy storage (CAES) plants have utilized sensible heat storage systems to store the heat developed during the air compression phase of the operation cycle for subsequent use during the power generation phase. This study was performed to experimentally evaluate the performance and durability of several heat storage materials proposed for these systems. Materials considered were: (1) 3/8 in. sintered iron oxide pellets; (2) 1/2-in. Denstone spheres; (3) 1-in. cast iron alloy balls; and (4) crushed rock. The results indicated that, from the standpoint of performance and durability, Denstone, cast iron containing 27% or more chromium, or crushed rock (Dresser basalt) would be satisfactory. However, considering material costs in addition to performance and durability, crushed rock would probably be the most desirable heat storage material for these types of CAES plants.

Research Organization:
Pacific Northwest Lab., Richland, WA (USA); FluiDyne Engineering Corp., Minneapolis, MN (USA)
DOE Contract Number:
AC06-76RL01830
OSTI ID:
6651157
Report Number(s):
PNL-SA-10531; CONF-820969-1; ON: DE83002058
Resource Relation:
Conference: AIAA/EPRI international conference on UPH and compressed air energy storage, San Francisco, CA, USA, 21 Sep 1982; Other Information: Portions of document are illegible
Country of Publication:
United States
Language:
English