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Table 3.
Components of nuclear heating in the ISABELLE structure and summary of the heat balance in the ETALISA experiment, revisited with the high-fidelity modelling using TRIPOLI-4 and compared with the original engineering method.
| Plateau | Method | Nuclear Heating of ISABELLE (W/g) |
Heat Balance (W) |
Max LHGR | |||||||
| Neutron | Gamma |
Corrections |
REFLET |
W/cm | |||||||
| Water | Water | Steel | Zircaloy | C(γ) | C(n) | TL | Q.Cp.ΔT | P | ff.P/L | ||
| Low | High-Fidelity | 0.36 | 0.71 | 0.67 | 0.77 | −90.9 | −32 | −67.5 | 5844.7 | 5654.3 | 176 |
| Engineering | − | 0.78 | 0.84 | 0.99 | –90.8 | –113.7 | –68.5 | 5845.5 | 5572.5 | 173 | |
| Discrepancy (%) | – | 10% | 25% | 29% | 0% | 255% | 1.5% | 0.0% | −1.4% | −1.4% | |
| High | High-Fidelity | 0.81 | 1.08 | 1.02 | 1.19 | −125.3 | −85.2 | 107.7 | 13172.6 | 13069.8 | 409 |
| Engineering | − | 1.05 | 1.12 | 1.33 | -118.6 | -263.1 | 117.9 | 13155.6 | 12891.8 | 403 | |
| Discrepancy (%) | − | −3% | 10% | 12% | −5% | 209% | 9.5% | −0.1% | −1.4% | −1.4% | |
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