LiH thermal-storage capsule/heat exchanger
This invention provides a thermal-storage system using lithium hydride as the heat sink material. The unique discovery of the present invention is that small, lightweight, lithium-compatible and hydrogen impermeable spheres for encapsulating lithium hydride can be made by placing a thin layer of refractory metal on the inner and outer surfaces of a ceramic spherical shell. The high surface area-to-volume ratio of the spheres provides high heat transfer rates and their small size reduces the forces of expansion. Accordingly, this invention is directed to a thermal-storage apparatus comprising a generally spherically shaped hollow shell containing a heat-sink material wherein the hollow shell comprises an inner-shell layer of metal, a middle-shell layer of ceramic, and an outer-shell layer of metal. The inner- and outer-shell layers may be molybdenum and the middle shell layer silicon carbide.
- Research Organization:
- Department of the Air Force, Washington, DC (USA)
- Assignee:
- Dept. of the Air Force, Washington, DC
- OSTI ID:
- 5990548
- Resource Relation:
- Other Information: This Government-owned invention available for U.S. licensing and, possibly, for foreign licensing. Copy of application available NTIS
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
HEAT EXCHANGERS
HEAT SINKS
HEAT STORAGE
LITHIUM HYDRIDES
HEAT TRANSFER
ENCAPSULATION
HEAT RESISTANT MATERIALS
HIGH TEMPERATURE
HYDROGEN
LAYERS
MOLYBDENUM
PERMEABILITY
POWER SUPPLIES
REFRACTORY METALS
SHAPE
SPHERES
SURFACES
VOLUME
ALKALI METAL COMPOUNDS
ALLOYS
ELECTRONIC EQUIPMENT
ELEMENTS
ENERGY STORAGE
ENERGY TRANSFER
EQUIPMENT
HYDRIDES
HYDROGEN COMPOUNDS
LITHIUM COMPOUNDS
MATERIALS
METALS
NONMETALS
SINKS
STORAGE
TRANSITION ELEMENTS
250600* - Energy Storage- Thermal
420400 - Engineering- Heat Transfer & Fluid Flow