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Nukleonika
Volume 66 (2021): Numero 4 (December 2021)
Accesso libero
Preliminary computational and experimental design studies of the ISHTAR thermostatic rig for the high-temperature reactors materials irradiation
Anna Talarowska
Anna Talarowska
,
Maciej Lipka
Maciej Lipka
e
Grzegorz Wojtania
Grzegorz Wojtania
| 25 nov 2021
Nukleonika
Volume 66 (2021): Numero 4 (December 2021)
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Article Category:
Original Paper
Pubblicato online:
25 nov 2021
Pagine:
127 - 132
Ricevuto:
04 gen 2021
Accettato:
07 feb 2021
DOI:
https://doi.org/10.2478/nuka-2021-0019
Parole chiave
High-temperature reactor
,
HTR
,
Irradiation
,
Materials
,
Reactor MARIA
© 2021 Anna Talarowska et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Fig. 1
Results of the pressure drop vs. coolant flow measurement in the mockup of the irradiation channel.
Fig. 2
One-dimensional code validation. Measured to computed temperature differences as a function of the rig power. Note that the last point on the horizontal axis is out of the scale.
Fig. 3
Result of the 1D heat transfer calculation of the ISHTAR rig. The dimensions of the layers in the radial direction are marked approximately.
Fig. 4
Graphite specimen assembly with thermocouples attached.
Fig. 5
Top: Isometric view of the instrumented material sample containers. Bottom: Isometric view of the electrical heater coils.
Fig. 6
ISHTAR thermostatic rig overview.
Fig. 7
Allotted irradiation locations for the ISHTAR irradiation rig in MARIA reactor core marked in green. The scheme covers the core without the reflector blocks. The fuel elements are marked with dark gray circles, e.g., j-5.
Fig. 8
Geometrical model. 1 – inner shell, 2 – electrical heater, 3 – samples with holder, 4 – outer shell, 5 – “crown”.
Fig. 9
Normalized nuclear heating applied to the model.
Fig. 10
Temperature field in the core part of the irradiation rig.
Natural convection parameters [12]
Gr·Pr
<10
3
10
3
–10
6
10
6
–10
10
C
1
0.105
0.4
N
0
0.3
0.2