DocumentCode :
2564552
Title :
Flight experiment of thermal energy storage
Author :
Namkoong, David
Author_Institution :
NASA Lewis Res. Center, Cleveland, OH, USA
fYear :
1989
fDate :
6-11 Aug 1989
Firstpage :
953
Abstract :
Thermal energy storage (TES), which enables a solar dynamic system to deliver constant electric power through periods of sun and shade, is discussed. Brayton and Stirling power systems under current considerations for missions in the near future require working fluid temperatures in the range from 1100 to above 1300 K range. Tests of the fluoride family of salts which meet these requirements are described. The principal feature of fluorides that must be taken into account is the change in volume that occurs with melting and freezing. Analysis of the transient, two-phase phenomenon, which is being incorporated into a three-dimensional computer code, is discussed. The objective of a planned flight program is to verify the predictions of the code, particularly the void location and its effect on containment temperature. The four experimental packages comprising the program represent the first tests of melting and freezing conducted under microgravity
Keywords :
aerospace computing; aerospace simulation; aerospace testing; digital simulation; heat engines; physics computing; solar absorber-convertors; space vehicle power plants; thermal energy storage; Brayton cycle; Stirling cycle; aerospace computing; aerospace testing; computer code; freezing; heat engines; melting; microgravity; packages; phase change materials; physics computing; solar absorber-convertors; solar dynamic system; space power; thermal energy storage; working fluid; Energy storage; Fluid dynamics; Packaging; Power system dynamics; Power system transients; Power systems; Sun; Temperature distribution; Testing; Transient analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Energy Conversion Engineering Conference, 1989. IECEC-89., Proceedings of the 24th Intersociety
Conference_Location :
Washington, DC
Type :
conf
DOI :
10.1109/IECEC.1989.74583
Filename :
74583
Link To Document :
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