Development of encapsulated lithium hydride thermal energy storage for space power systems
Inclusion of thermal energy storage in a pulsed space power supply will reduce the mass of the heat rejection system. In this mode, waste heat generated during the brief high-power burst operation is placed in the thermal store; later, the heat in the store is dissipated to space via the radiator over the much longer nonoperational period of the orbit. Thus, the radiator required is of significantly smaller capacity. Scoping analysis indicates that use of lithium hydride as the thermal storage medium results in system mass reduction benefits for burst periods as long as 800 s. A candidate design for the thermal energy storage component utilizes lithium hydride encapsulated in either 304L stainless steel or molybdenum in a packed-bed configuration with a lithium or sodium-potassium (NaK) heat transport fluid. Key issues associated with the system design include phase-change induced stresses in the shell, lithium hydride and shell compatibility, lithium hydride dissociation and hydrogen loss from the system, void presence and movement associated with the melt-freeze process, and heat transfer limitations on obtaining the desired energy storage density. 58 refs., 40 figs., 11 tabs.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5716312
- Report Number(s):
- ORNL/TM-10413; ON: DE88004762
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Development of encapsulated lithium hydride sink-side thermal energy storage for pulsed space power systems
Development of encapsulated lithium hydride thermal energy storage
Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
42 ENGINEERING
36 MATERIALS SCIENCE
CONTAINERS
SHAPE
STRESS ANALYSIS
LITHIUM HYDRIDES
ENERGY STORAGE
SPACECRAFT POWER SUPPLIES
THERMAL ENERGY STORAGE EQUIPMENT
CRACKS
ENCAPSULATION
EXPERIMENTAL DATA
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MOLYBDENUM
PHASE TRANSFORMATIONS
SPHERICAL CONFIGURATION
STAINLESS STEEL-304
WASTE HEAT
ALKALI METAL COMPOUNDS
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CONFIGURATION
CORROSION RESISTANT ALLOYS
DATA
ELECTRONIC EQUIPMENT
ELEMENTS
ENERGY
EQUIPMENT
HEAT
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LITHIUM COMPOUNDS
MATERIALS
METALS
NICKEL ALLOYS
NUMERICAL DATA
POWER SUPPLIES
STAINLESS STEELS
STEELS
STORAGE
TRANSITION ELEMENTS
WASTES
NESDPS Office of Nuclear Energy Space and Defense Power Systems
250600* - Energy Storage- Thermal
320201 - Energy Conservation
Consumption
& Utilization- Transportation- Air & Aerospace
420400 - Engineering- Heat Transfer & Fluid Flow
360602 - Other Materials- Structure & Phase Studies