Experimental study on the delivery rate and recovery rate of ZrCo hydride for ITER application
- KAERI, 1045 Daedeokdaero, Yuseong, Daejeon 305-353 (Korea, Republic of)
- Tritium Plant Consultant, 3288-10 Sakado-cho, Mito-shi 310-0841, Tbakaki-ken (Japan)
- NFRI, 113 Gwahakro, Yuseong, Daejeon 305-353 (Korea, Republic of)
To investigate the key design aspects of the storage and delivery system (SDS) bed in ITER, rates of a hydriding, de-hydriding and isotope effects on the H/D composition during a rapid delivery were experimentally investigated by using small tube-type reactors with different packing heights. Hydrogen recovery times for a shorter packing-height bed (20-40 mm) decreased exponentially with an increasing initial hydrogen pressure, but increased by approximately two orders of a magnitude in a longer packing-height bed (145 mm). De-hydriding rate increases exponentially with an increase in the relative heating area per unit weight of ZrCo powder and decreases in the packing-height of ZrCo hydride. Continuous isotopic compositional change inevitably occurs during the entire delivery time due to the known isotope effect in the metal-hydrogen systems. To overcome the isotope effect during a delivery from the SDS beds, an alternative operation method was suggested for the fuel supply from the SDS. (authors)
- OSTI ID:
- 22109328
- Journal Information:
- Fusion Science and Technology, Vol. 54, Issue 1; Conference: 8. international conference on tritium science and technology, Rochester, NY (United States), 16-21 Sep 2007; Other Information: Country of input: France; 14 refs; ISSN 1536-1055
- Country of Publication:
- United States
- Language:
- English
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