Single-pass core design of a low-temperature Super LWR
| Autor: | Jianhui Wu, Yoshiaki Oka, Nobuhiro Maekawa |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Journal of Nuclear Science and Technology. 50:1129-1138 |
| ISSN: | 1881-1248 0022-3131 |
| DOI: | 10.1080/00223131.2013.836462 |
| Popis: | A supercritical-pressure light water cooled and moderated reactor (Super LWR) with a single-pass flow scheme is developed for simplifying upper core structures. Both coolant in the fuel channels and the water rods flow upward and are mixed in the upper plenum. It eliminates the moderator guide/distribution tubes in the upper core that were used in the previous Super LWR design adopting two-pass coolant flow scheme. This core design adopts a four-batch fuel management scheme and an out–in fuel loading pattern. One hundred and twenty-one fuel assemblies with an active height of 3.7 m are included. The flow rate fraction for water rods is 3.5%, and the thermal insulator is used to keep the moderator temperature below pseudocritical temperature. The equilibrium core is analyzed by using neutronic and thermal-hydraulic coupled calculation. The results show that the maximum cladding surface temperature (MCST) is limited to 485 °C with the average outlet temperature of 400 °C. The inherent safety is fulfilled by... |
| Databáze: | OpenAIRE |
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