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U.S. Department of Energy
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Single Primary Heat Extraction and Removal Emulator (SPHERE) Long Duration Testing

Technical Report ·
DOI:https://doi.org/10.2172/2472941· OSTI ID:2472941
For heat-pipe cooled microreactor development, it is essential to understand the characteristics of heat pipes and how they function under a wide range of operating conditions. An important process for heat-pipe cooled microreactor development is the passive heat removal and how the performance may change over long periods of time. Increased experimental data provides additional information to assess the operational lifetime of alkali metal heat pipes. Idaho National Laboratory has completed testing over a long duration of a high-performance sodium filled heat pipe while monitoring axial temperature profile, power supplied by the heaters, and heat removed by a gas-gap calorimeter. The results from this testing can aid in heat pipe validation efforts.
Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE)
DOE Contract Number:
AC07-05ID14517
OSTI ID:
2472941
Report Number(s):
INL/RPT--24-81103-Rev000; INL/RPT-24-05019
Country of Publication:
United States
Language:
English

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