期刊
NUCLEAR ENGINEERING AND DESIGN
卷 271, 期 -, 页码 444-458出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.nucengdes.2013.12.015
关键词
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资金
- South African Research Chairs Initiative of the Department of Science and Technology
- National Research Foundation
- PBMR SOC Ltd.
- M-Tech Industrial (Pty) Ltd.
Thermal-fluid simulations are used extensively to predict the maximum fuel temperatures, flows, pressure drops and thermal capacitance of pebble bed gas cooled reactors in support of the reactor safety case. The PBMR company developed the HTTU non-nuclear test facility in cooperation with M-Tech Industrial (Pty) Ltd. and the North-West University in South Africa to conduct comprehensive separate effects tests as well as integrated effects tests to study the different thermal-fluid phenomena. This paper describes the separate effects tests that were conducted to determine the effective thermal conductivity through the pebble bed under near-vacuum conditions and temperatures up to 1200 degrees C. It also presents the measured temperature distributions and the methodology applied in the data analysis to derive the resultant values of effective thermal conductivity and its associated uncertainty. (C) 2013 Elsevier B.V. All rights reserved.
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