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Title: Full-scale model of cooling and heating system for JT-60 vacuum vessel

Abstract

A full-scale model of a rigid sectorial ring and a set of bellows which was covered with a temperature control layer and a coolant supply equipment was constructed to verify the adequacy of the heating and cooling system designed for JT-60. To cool and heat it effectively and to decrease the temperature differences among the various parts in the vacuum vessel, heater units and cooling pipes were located on the surface of the ring. The temperature control layer is to heat the vessel to 500/degree/sub //C within 70 hours and to maintain it at the temperature for 48 hours for simulating the state of bakeout. Subsequently the vessel is cooled down within about the same time as in heating. Prior to the series of tests, numerical analyses were performed to predict the cooling and heating efficiencies on the model and to examine the method of the temperature regulation.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Hitachi Ltd, Jpn
OSTI Identifier:
6360043
Alternate Identifier(s):
OSTI ID: 6360043
Report Number(s):
CONF-811040-
Journal ID: CODEN: PSERD
Resource Type:
Conference
Journal Name:
Proc. Symp. Eng. Probl. Fusion Res.; (United States)
Additional Journal Information:
Conference: 9. symposium on engineering problems of fusion research, Chicago, IL, USA, 26 Oct 1981
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; JT-60 REACTORS; VACUUM SYSTEMS; COOLING SYSTEMS; HEATING SYSTEMS; ENERGY SYSTEMS; THERMONUCLEAR REACTORS; TOKAMAK TYPE REACTORS 700209* -- Fusion Power Plant Technology-- Component Development & Materials Testing

Citation Formats

Kajiura, S., Owada, K., Sato, H., Furuyama, M., Yamamoto, M., Shimizu, M., Ohta, M., and Iijima, T. Full-scale model of cooling and heating system for JT-60 vacuum vessel. United States: N. p., 1981. Web.
Kajiura, S., Owada, K., Sato, H., Furuyama, M., Yamamoto, M., Shimizu, M., Ohta, M., & Iijima, T. Full-scale model of cooling and heating system for JT-60 vacuum vessel. United States.
Kajiura, S., Owada, K., Sato, H., Furuyama, M., Yamamoto, M., Shimizu, M., Ohta, M., and Iijima, T. Thu . "Full-scale model of cooling and heating system for JT-60 vacuum vessel". United States.
@article{osti_6360043,
title = {Full-scale model of cooling and heating system for JT-60 vacuum vessel},
author = {Kajiura, S. and Owada, K. and Sato, H. and Furuyama, M. and Yamamoto, M. and Shimizu, M. and Ohta, M. and Iijima, T.},
abstractNote = {A full-scale model of a rigid sectorial ring and a set of bellows which was covered with a temperature control layer and a coolant supply equipment was constructed to verify the adequacy of the heating and cooling system designed for JT-60. To cool and heat it effectively and to decrease the temperature differences among the various parts in the vacuum vessel, heater units and cooling pipes were located on the surface of the ring. The temperature control layer is to heat the vessel to 500/degree/sub //C within 70 hours and to maintain it at the temperature for 48 hours for simulating the state of bakeout. Subsequently the vessel is cooled down within about the same time as in heating. Prior to the series of tests, numerical analyses were performed to predict the cooling and heating efficiencies on the model and to examine the method of the temperature regulation.},
doi = {},
journal = {Proc. Symp. Eng. Probl. Fusion Res.; (United States)},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

Conference:
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