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MEASUREMENT OF POST DRYOUT HEAT TRANSFER COEFFICIENT IN A DOUBLE HEATEAD ANNULUS WITH FLOW OBSTACLES
KTH, School of Engineering Sciences (SCI), Physics, Reactor Technology.
KTH, School of Engineering Sciences (SCI), Physics, Reactor Technology.ORCID iD: 0000-0001-5595-1952
2011 (English)In: Proceedings of the 14th International Topical Meeting on Nuclear Reactor Thermal-Hydraulics, 2011Conference paper, Published paper (Refereed)
Abstract [en]

An experimental study on post dryout heat transfer regime in annuli with flow obstacles was conducted in the High-pressure Water Test (HWAT) loop at the Royal Institute of Technology in Stockholm, Sweden. The experimental investigations were performed in a wide range of the operational conditions: mass flux (500-750) kg/(m2s), inlet subcooling (10-40) K and system pressure (5-7) MPa. The wall superheat was measured at 88 different axial and azimuthal positions (40 on the inner tube and 48 on the outer tube). The results show an enhancement of heat transfer downstream of flow obstacles. The biggest influence has been observed in case of pin spacers. This result is consistent with blockage area of various obstacles, which was the highest in case of pin spacers

Place, publisher, year, edition, pages
2011.
National Category
Energy Engineering
Research subject
SRA - Energy
Identifiers
URN: urn:nbn:se:kth:diva-80422OAI: oai:DiVA.org:kth-80422DiVA: diva2:496309
Conference
NURETH-14. Toronto, Canada. Sept. 25-30 2011
Funder
StandUp
Note
QC 20120412Available from: 2012-02-09 Created: 2012-02-09 Last updated: 2012-04-12Bibliographically approved

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Anglart, Henryk

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