The QUEOS facility consists of the test vessel, the furnace and the valve system separating the two. The spheres are heated in an electric radiation furnace in an argon atmosphere. The PREMIX facility consists of a vertical cylindrical vessel with four venting pipes at the top. Inside the vessel there is a melt generator. This vessel is installed inside a large containment (FAUNA pressure vessel) to protect against explossions.
Liquid melt is simulated by a mixture of solid spheres. Three types of spheres with two different densities (zirconia and molybdenum)
References: [1] L. Meyer, “QUEOS, an experimental investigation of premixing phase with hot spheres"", Nuclear Engineering and Design 189, pp. 191-204, 1999,
https://www.sciencedirect.com/science/article/pii/S0029549398002660
[2] Huber F., Kaiser A., Steinbrueck M., Will H., “PREMIX, Documentation of the Results of Experiments PM01 to PM06”, Forschungszentrum Karlsruhe, Wissenschaftliche Berichte, FZKA 5756, 1996
https://publikationen.bibliothek.kit.edu/270039084
[3] Kaiser A., Schuetz W., Will H., “PREMIX Experiments PM12-PM18 to Investigate the Mixing of a Hot Melt with Water”, Forschungszentrum Karlsruhe, Wissenschaftliche Berichte, FZKA 6380, 2001,
https://publikationen.bibliothek.kit.edu/270050172
[4] Teyssier, P, et al. ""SIMMER-III code verification with the `QUEOS` premixing and the `KATS` core melt spreading experiments."" , Dec. 1997.
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