TY - CONF
T1 - CHF enhancement using spherical porous materials in saturated pool boiling of nanofluid
AU - Mori, Shoji
AU - Yokomatsu, Fumihisa
AU - Okuyama, Kunito
N1 - Funding Information:
A part of this study is the result of “Establishment of In-Vessel Retention for a next generation PWR by heater surface modification” carried out under the Initiatives for Atomic Energy Basic and Generic Strategic Research by the Ministry of Education, Culture, Sports, Science and Technology of Japan
Publisher Copyright:
© 2016 Association for Computing Machinery Inc. All Rights Reserved.
PY - 2017
Y1 - 2017
N2 - One strategy for severe accidents is in-vessel retention (IVR) of corium debris. IVR consists of external cooling of the reactor vessel in order to remove decay heat from the molten core through the lower head of the vessel. However, heat removal is limited by the occurrence of the critical heat flux condition (CHF) at the outer surface of the reactor vessel. Therefore we proposed the CHF enhancement technique in a saturated pool boiling by attachment of a honeycomb porous plate (HPP) on the heated surface. However, the reactor vessel to install HPP has curvature, so the key succeeding in IVR depends on how to place the HPP on the surface of reactor vessel with curvature. Accordingly, we propose the way using porous cellulose beads and nanofluid. As a result, the CHF is shown to be enhanced double compared with that of a plain surface of distilled water.
AB - One strategy for severe accidents is in-vessel retention (IVR) of corium debris. IVR consists of external cooling of the reactor vessel in order to remove decay heat from the molten core through the lower head of the vessel. However, heat removal is limited by the occurrence of the critical heat flux condition (CHF) at the outer surface of the reactor vessel. Therefore we proposed the CHF enhancement technique in a saturated pool boiling by attachment of a honeycomb porous plate (HPP) on the heated surface. However, the reactor vessel to install HPP has curvature, so the key succeeding in IVR depends on how to place the HPP on the surface of reactor vessel with curvature. Accordingly, we propose the way using porous cellulose beads and nanofluid. As a result, the CHF is shown to be enhanced double compared with that of a plain surface of distilled water.
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M3 - Paper
AN - SCOPUS:85052522558
T2 - 17th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2017
Y2 - 3 September 2017 through 8 September 2017
ER -