German Contribution to Item 2 of the Agenda “Status of ... - IAEA
German Contribution to Item 2 of the Agenda “Status of ... - IAEA
German Contribution to Item 2 of the Agenda “Status of ... - IAEA
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Lehrstuhl für Reak<strong>to</strong>rsicherheit und –technik<br />
Univ.-Pr<strong>of</strong>. Dr. rer. nat. Hans-Josef Allelein<br />
Institut für Energie- und Klimaforschung<br />
Nukleare Entsorgung und Reak<strong>to</strong>rsicherheit (IEK-6)<br />
NACOK2- Pebble Bed 1000°C<br />
• simple “chimney” set up<br />
• heating rate 30°C/h<br />
• 8 layers <strong>of</strong> ceramic pebbles<br />
• 200 <strong>to</strong>tal with half spheres<br />
• T max = 1000°C (upper pebble layer)<br />
• gas flow variation: 20, 30, 40 m³/h<br />
• four sets <strong>of</strong> PIV measurements at:<br />
1. 20 m³/h, 1000°C (layer 8)<br />
2. 30 m³/h, same furnace temperature<br />
→ T drop<br />
3. 30 m³/h, 1000°C (layer 8)<br />
4. 40 m³/h, 1000°C (layer 8)<br />
• 120 h experimental time<br />
H.-J. Allelein<br />
TWG-GCR-23<br />
March 5-7, 2013, Vienna<br />
16
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