期刊
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
卷 45, 期 8, 页码 11352-11383出版社
WILEY
DOI: 10.1002/er.5378
关键词
convective heat transfer; effective thermal conductivity; experimental investigations; flow characteristics; pebble-bed-type nuclear reactors
资金
- China Postdoctoral Science Foundation [2019M661513]
- Natural Science Foundation of China [11475132]
Pebble-bed-type nuclear reactors have gained more attention recently due to their inherent safety characteristics and multiple applications. Experimental investigations on the thermal-hydraulics of different fluids in the reactor core have been reviewed, providing important insights for safety evaluation and design. Main factors influencing flow, convective heat transfer, and effective thermal conductivity in the pebble bed have been discussed.
Merits in the inherent safety characteristics and multiple applications, cause the pebble-bed-type nuclear reactors, including the High-Temperature Gas-cooled Reactors, Fluoride-salt-cooled High-temperature Reactors and Water-cooled Pebble-bed Reactors, to gain more focus in recent years. Thermal-hydraulic characteristics in the pebble bed reactor core are of great significance to the safety evaluation and design of such reactors. Experimental investigations on the thermal-hydraulics of different fluids in the pebble-bed-type of nuclear reactor core have been reviewed in this paper. Main experimental methods to determine the flow regime transition, convective heat transfer coefficients, and effective thermal conductivity have been summarized, with the merits and disadvantages discussed. Discussions are given on the main factors that can influence the flow, convective heat transfer and effective thermal conductivity in the pebble bed.
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