Heat-storing medium
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United States of America Patent
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N/A
Issued Date -
Sep 14, 2006
app pub date -
Apr 15, 2004
filing date -
Apr 24, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Normally granulates of rare earth compounds are used as a heat-storing medium for a low-temperature range below 15 Kelvin. The material costs for rare earths are high. Further, rare earths are magnetic and thus not suitable for all applications. The present heat-storing medium for a very low temperature range is composed of a set (22) of pourable and gastight sealed hollow bodies (30). Each hollow body (30) contains a fill (34) of a low-boiling gas as a storing medium. The hollow body wall (32) is made of metal or ceramic. Thus a relatively inexpensive heat-storing medium is provided whose physical, chemical, magnetic and mechanical properties can be adapted to the respective use by corresponding material selection.
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