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U.S. Department of Energy
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High-temperature thermal energy storage: including a discussion of TES integrated into power plants

Book ·
OSTI ID:6109940

Part I of this monograph presents some papers on basic considerations dealing with high-temperature thermal energy storage. These are: Energy perspective; Thermal energy storage: general considerations; Thermal energy storage integrated into power plants; Thermal energy storage techniques and Technical considerations; and Economic considerations. Candidate means of storing thermal energy that are described in Part I include sensible and latent heat, chemical reactions, and heat of dilution. (32 references). Part II presents descriptions of 15 concepts of sensible or latent heat mechanisms only. The 10 sensible heat systems are storage in unpressurized fluids (oil and salt or oil bath); storage of pressurized fluids (prestressed cast iron vessels or steel tanks, underground lined cavern for water storage, thin insulated steel shell under ocean containing pressurized water); storage in stationary solid (gas passage through rocks or solid blocks, rock bed with liquid heat transport fluid, hollow steel ingots, heat storage in concrete or sand with tube intensiveness); storage in moving solid (sand in a fluidized bed, sand poured over pipes). Five concepts discussed dealing with phase change material systems are stationary bulk PCM medium surrounding high packing density tubes (thermal energy storage heat exchangers or steel ingots immersed in PCM bath); stationary encapsulated PCM (PCM macroencapsulation, heat of fusion energy storage boiler tank); moving PCM (moving scrapers to remove solid PCM from heat transfer pipes); and direct contact (direct contact between PCM and transport fluid). 48 references. (MCW)

OSTI ID:
6109940
Country of Publication:
United States
Language:
English