Heat-transfer characteristics of flowing and stationary particle-bed-type fusion-reactor blankets

Technical Report · Tue Feb 01 04:00:00 EST 1983

DOI:https://doi.org/10.2172/6231307· OSTI ID:6231307

Nietert, R E

The heat-transfer characteristics of flowing and stationary packed-particle beds have recently become of interest in connection with conceptual designs of fusion reactor blankets. A detailed literature survey has shown that the processes taking place in such beds are not fully understood despite their widespread use in the chemical industry and other engineering disciplines for more than five decades. In this study, two experimental investigations were pursued. In the first, a heat-transfer loop was constructed through which glass microspheres were allowed to flow by rgravity at controlled rates through an electrically heated stainless steel tubular test section. In the second, an annular packed bed was constructed in which heat was applied through the outer wall by electric heating of a stainless steel tube. Cooling occurred at the inner wall of the annular bed by flowing air through the central tube. A second air stream was allowed to flow through the voids of the packed bed. An error-minimization technique was utilized in order to obtain the two-dimensional one-parameter effective conductivity for the bed by comparing the experimental and theoretically predicted temperature profiles. Experiments were conducted for various modified Reynolds numbers less than ten.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6231307
• Report Number(s): UCRL-15521-Vol.2; ON: DE83009322
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700201* -- Fusion Power Plant Technology-- Blanket Engineering
ALLOYS
BREEDING BLANKETS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
ENERGY TRANSFER
GLASS
HEAT TRANSFER
IRON ALLOYS
IRON BASE ALLOYS
MICROSPHERES
PACKED BED
REACTOR COMPONENTS
STAINLESS STEELS
STEELS
TUBES