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@ARTICLE{Tatsumoto:1006444,
author = {Tatsumoto, H. and Lyngh, D. and Arnold, P. and Segerup, M.
and Tereszkowski, P. and Beßler, Y.},
title = {{D}esign of a hydrogen vent line for {ESS} cryogenic
moderator system},
journal = {IOP conference series / Materials science and engineering},
volume = {1240},
number = {1},
issn = {1757-8981},
address = {London [u.a.]},
publisher = {Institute of Physics},
reportid = {FZJ-2023-01678},
pages = {012116 -},
year = {2022},
abstract = {The ESS cryogenic moderator system (CMS) circulates
subcooled liquid hydrogen at 17 K and 1 MPa to remove
nuclear heating at two hydrogen moderators. All the hydrogen
will be safely released to the atmosphere on the roof top of
the Target building through a hydrogen vent line (HVL) with
a total length of 36 m. Two-phase hydrogen would flow
through the HVL because the hydrogen expands by isenthalpic
process. The HVL has been designed to avoid decreasing the
wall penetration temperature below 253 K and to be sized big
enough to limit the backpressure below the design pressure.
One-dimensional transient thermohydraulic analysis code that
can treat two-phase flow heat transport behavior has been
developed. A natural convection heat transfer from air to
the cold surface is considered. In this work, the wall
temperature reductions and the pressure drop along the HVL
during release of cryogenic hydrogen are analyzed. The size
and thickness of the HVL have been verified based on the
analysis results.},
cin = {ZEA-1},
ddc = {530},
cid = {I:(DE-Juel1)ZEA-1-20090406},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4)},
pid = {G:(DE-HGF)POF4-6G4},
typ = {PUB:(DE-HGF)16},
doi = {10.1088/1757-899X/1240/1/012116},
url = {https://juser.fz-juelich.de/record/1006444},
}