Reactor core conceptual design for a scalable heating experimental reactor, LUTHER
| Autor: | Juhani Hyvärinen, Heikki Suikkanen, Thinh Truong |
|---|---|
| Přispěvatelé: | Lappeenrannan-Lahden teknillinen yliopisto LUT, Lappeenranta-Lahti University of Technology LUT, fi=School of Energy Systems|en=School of Energy Systems |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
business.industry
Nuclear engineering TK9001-9401 small modular reactor System safety Nuclear power pressure-channel type reactor Enriched uranium Small modular reactor Electricity generation movable fuel assemblies Nuclear reactor core Conceptual design conceptual design district heating Nuclear engineering. Atomic power business Burnup |
| Zdroj: | Journal of Nuclear Engineering Volume 2 Issue 2 Pages 19-214 Journal of Nuclear Engineering, Vol 2, Iss 19, Pp 207-214 (2021) |
| Popis: | In this paper, the conceptual design and a preliminary study of the LUT Heating Experimental Reactor (LUTHER) for 2 MWth power are presented. Additionally, commercially sized designs for 24 MWth and 120 MWth powers are briefly discussed. LUTHER is a scalable light-water pressure-channel reactor designed to operate at low temperature, low pressure, and low core power density. The LUTHER core utilizes low enriched uranium (LEU) to produce low-temperature output, targeting the district heating demand in Finland. Nuclear power needs to contribute to the decarbonizing of the heating and cooling sector, which is a much more significant greenhouse gas emitter than electricity production in the Nordic countries. The main principle in the development of LUTHER is to simplify the core design and safety systems, which, along with using commercially available reactor components, would lead to lower fabrication costs and enhanced safety. LUTHER also features a unique design with movable individual fuel assembly for reactivity control and burnup compensation. Two-dimensional (2D) and three-dimensional (3D) fuel assemblies and reactor cores are modeled with the Serpent Monte Carlo reactor physics code. Different reactor design parameters and safety configurations are explored and assessed. The preliminary results show an optimal basic core design, a good neutronic performance, and the feasibility of controlling reactivity by moving fuel assemblies. Publishers version |
| Databáze: | OpenAIRE |
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