Hostname: page-component-7bb8b95d7b-qxsvm Total loading time: 0 Render date: 2024-09-11T22:48:20.324Z Has data issue: false hasContentIssue false

Influence of Gas-Filled Gaps on the Thermal Behaviour of Dual Purpose Casks

Published online by Cambridge University Press:  26 July 2019

Christian Dinkel*
Affiliation:
University of Bayreuth;
Daniel Billenstein
Affiliation:
University of Bayreuth;
Frank Rieg
Affiliation:
University of Bayreuth;
Bernd Roith
Affiliation:
Swiss Federal Nuclear Safety Inspectorate ENSI
*
Contact: Dinkel, Christian, University of Bayreuth, Chair of Engineering Design and CAD, Germany, christian.dinkel@uni-bayreuth.de

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Basically, the safe dissipation of heat is among others an important protection objective of dual purpose casks. Gas-filled gaps within such casks can play a major role for the thermal behavior as they act as thermal barriers due to the lower heat conductivity of gaseous fluids in comparison to metallic materials. However, additional heat transmission mechanisms, such as natural convection and radiation can also occur in a gaseous medium. This leads to both an expanded modelling and a prolonged computing time in numerical simulations. Within the scope of a research project in cooperation with Swiss Federal Nuclear Safety Inspectorate ENSI a simulation tool for the fast thermal evaluation of dual purpose casks is developed which combines analytical methods and FEA. The innovation is that the thermal effects of gas-filled gaps are considered by using analytical equations. Main focus lies on the implementation of heat radiation as a non-linear transfer mechanism. Therefore, an iterative calculation process is used and the effects of the iteration number is investigated. Furthermore, the influence of radiation in comparison to pure conduction is examined depending on the gap width.

Type
Article
Creative Commons
Creative Common License - CCCreative Common License - BYCreative Common License - NCCreative Common License - ND
This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is unaltered and is properly cited. The written permission of Cambridge University Press must be obtained for commercial re-use or in order to create a derivative work.
Copyright
© The Author(s) 2019

References

Cook, R., Malkus, D., Plesha, M. and Witt, R. (2002), Concepts and Applications of Finite Element Analysis, John Wiley & Sons, Madison.Google Scholar
Dinkel, C., Frisch, M., Billenstein, D., Roith, B. and Rieg, F. (2016), “Development of a simulation tool for the thermal evaluation of transport and storage casks”, Proceedings of the 18th International Symposium on the Packaging and Transportation of Radioactive Materials PATRAM, Kobe, 18.09.2016 - 23.09.2016.Google Scholar
Droste, B., Komann, S., Wille, F., Rolle, A., Probst, U. and Schubert, S. (2014), “Consideration of aging mechanism influence on transport safety of dual purpose casks for spent nuclear fuel or HLW”, Packaging, Transport, Storage & Security of Radioactive Material, Vol. 25, pp. 105112. https://doi.org/10.1179/1746510914y.0000000070.Google Scholar
Holtec International (n.d.), Safety Analysis Report on the HI-STAR 180 Package, Non-proprietary Version, Report HI-2073681, Revision 3, United States Nuclear Regulatory Commission, Marlton.Google Scholar
Incropera, F., Dewitt, D., Bergman, T. and Lavine, A. (2007), Fundamentals of Heat and Mass Transfer, John Wiley & Sons, Hoboken.Google Scholar
International Atomic Energy Agency IAEA (2005), Regulations for the Safe Transport of Radioactive Material: Safety Requirements No. TS-R-1, Wien.Google Scholar
Koch, F., Bletzer, C. and Wieser, G. (2007), “Consideration of asymmetrical heat transmission and distribution using numerical methods”, Proceedings of the 15th International Symposium on the Packaging and Transportation of Radioactive Materials PATRAM, Miami, 21.10.2007 - 26.10.2007.Google Scholar
Müller, U. and Ehrhard, P. (1999), Freie Konvektion und Wärmeübertragung, C. F. Müller Verlag, Heidelberg.Google Scholar
Rust, W. (2011), Nichtlineare Finite-Elemente-Berechnungen, Vieweg+Teubner Verlag, Wiesbaden. https://doi.org/10.1007/978-3-8348-8148-9.Google Scholar
Verein Deutscher Ingenieure VDI (2013), VDI-Wärmeatlas, Springer Vieweg, Berlin, Heidelberg.Google Scholar
Ziegler, A. and Allelein, H.-J. (2013), Reaktortechnik, Springer Vieweg, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33846-5.Google Scholar
Zienkiewicz, O., Taylor, R. and Zhu, J. (2013), The Finite Element Method: Its Basis and Fundamentals, Elsevier, Amsterdam, Boston, Heidelberg, London, New York, Oxford, Paris, San Diego, San Francisco, Singapore, Sydney, Tokyo.Google Scholar