Modeling and analysis of alternative concept of ITER vacuum vessel primary heat transfer system

Juan Carbajo; Graydon Yoder; G. Dell'Orco; Warren Curd; Seokho Kim

doi:10.1016/j.fusengdes.2010.06.010

Modeling and analysis of alternative concept of ITER vacuum vessel primary heat transfer system

Juan Carbajo
, Graydon Yoder
, G. Dell'Orco
, Warren Curd
, Seokho Kim

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

A RELAP5-3D model of the ITER (Latin for "the way") vacuum vessel (VV) primary heat transfer system has been developed to evaluate a proposed design change that relocates the heat exchangers (HXs) from the exterior of the tokamak building to the interior. This alternative design protects the HXs from external hazards such as wind, tornado, and aircraft crash. The proposed design integrates the VV HXs into a VV pressure suppression system (VVPSS) tank that contains water to condense vapour in case of a leak into the plasma chamber. The proposal is to also use this water as the ultimate sink when removing decay heat from the VV system. The RELAP5-3D model has been run under normal operating and abnormal (decay heat) conditions. Results indicate that this alternative design is feasible, with no effects on the VVPSS tank under normal operation and with tank temperature and pressure increasing under decay heat conditions resulting in a requirement to remove steam generated if the VVPSS tank low pressure must be maintained.

Original language	English
Pages (from-to)	1852-1858
Number of pages	7
Journal	Fusion Engineering and Design
Volume	85
Issue number	10-12
DOIs	https://doi.org/10.1016/j.fusengdes.2010.06.010
State	Published - Dec 2010

Funding

This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.

Keywords

Alternative concept
Heat transfer
Safety

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10.1016/j.fusengdes.2010.06.010

Cite this

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title = "Modeling and analysis of alternative concept of ITER vacuum vessel primary heat transfer system",

abstract = "A RELAP5-3D model of the ITER (Latin for {"}the way{"}) vacuum vessel (VV) primary heat transfer system has been developed to evaluate a proposed design change that relocates the heat exchangers (HXs) from the exterior of the tokamak building to the interior. This alternative design protects the HXs from external hazards such as wind, tornado, and aircraft crash. The proposed design integrates the VV HXs into a VV pressure suppression system (VVPSS) tank that contains water to condense vapour in case of a leak into the plasma chamber. The proposal is to also use this water as the ultimate sink when removing decay heat from the VV system. The RELAP5-3D model has been run under normal operating and abnormal (decay heat) conditions. Results indicate that this alternative design is feasible, with no effects on the VVPSS tank under normal operation and with tank temperature and pressure increasing under decay heat conditions resulting in a requirement to remove steam generated if the VVPSS tank low pressure must be maintained.",

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author = "Juan Carbajo and Graydon Yoder and G. Dell'Orco and Warren Curd and Seokho Kim",

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AU - Carbajo, Juan

AU - Yoder, Graydon

AU - Dell'Orco, G.

AU - Curd, Warren

AU - Kim, Seokho

PY - 2010/12

Y1 - 2010/12

N2 - A RELAP5-3D model of the ITER (Latin for "the way") vacuum vessel (VV) primary heat transfer system has been developed to evaluate a proposed design change that relocates the heat exchangers (HXs) from the exterior of the tokamak building to the interior. This alternative design protects the HXs from external hazards such as wind, tornado, and aircraft crash. The proposed design integrates the VV HXs into a VV pressure suppression system (VVPSS) tank that contains water to condense vapour in case of a leak into the plasma chamber. The proposal is to also use this water as the ultimate sink when removing decay heat from the VV system. The RELAP5-3D model has been run under normal operating and abnormal (decay heat) conditions. Results indicate that this alternative design is feasible, with no effects on the VVPSS tank under normal operation and with tank temperature and pressure increasing under decay heat conditions resulting in a requirement to remove steam generated if the VVPSS tank low pressure must be maintained.

AB - A RELAP5-3D model of the ITER (Latin for "the way") vacuum vessel (VV) primary heat transfer system has been developed to evaluate a proposed design change that relocates the heat exchangers (HXs) from the exterior of the tokamak building to the interior. This alternative design protects the HXs from external hazards such as wind, tornado, and aircraft crash. The proposed design integrates the VV HXs into a VV pressure suppression system (VVPSS) tank that contains water to condense vapour in case of a leak into the plasma chamber. The proposal is to also use this water as the ultimate sink when removing decay heat from the VV system. The RELAP5-3D model has been run under normal operating and abnormal (decay heat) conditions. Results indicate that this alternative design is feasible, with no effects on the VVPSS tank under normal operation and with tank temperature and pressure increasing under decay heat conditions resulting in a requirement to remove steam generated if the VVPSS tank low pressure must be maintained.

KW - Alternative concept

KW - Heat transfer

KW - Safety

UR - https://www.scopus.com/pages/publications/78649692255

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DO - 10.1016/j.fusengdes.2010.06.010

M3 - Article

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EP - 1858

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

IS - 10-12

ER -

Modeling and analysis of alternative concept of ITER vacuum vessel primary heat transfer system

Abstract

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Keywords

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