Thermal Characteristics of High Temperature Naturally Circulating Helium Cooling Loop

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The paper deals with the process properties in terms of the heat transfer, i.e. the thermal performance of the thermal-process units within a helium loop intended for the testing of the decay heat removal (DHR) from the model of the gas-cooled fast reactor (GFR). The system is characterised by a natural circulation of helium, as a coolant, and assume the steady operating conditions of the circulation. The helium loop consists of four main components: the model of the gas-cooled fast reactor, the model of the heat exchanger for the decay heat removal, hot piping branch and cold piping branch. Using the thermal calculations, the thermal performance of the heat exchanger model and the thermal performance of the gas-cooled fast reactor model are determined. The calculations have been done for several defined operating conditions which correspond to the different helium flow rates within the system.

[1] M. Miletić, R. Fukač, I. Pioro, A. Dragunov. Development of gas cooled reactors and experimental setup of high temperature helium loop for in-pile operation. Nuclear Engineering and Design, 2014 (276), 87 - 97

[2] J. Berka, T. Hlinčík, I. Víden, T. Hudský, J. Vít. The design and utilization of a hightemperature helium loop and other facilities for the study of advanced gas-cooled reactors in the Czech Republic. Progress in Nuclear Energy, 2015 (85), 156 - 163

[3] I. A. Said, M. M. Taha, S. Usman, M. H. Al-Dahhan. Effect of helium pressure on natural convection heat transfer in a prismatic dual-channel circulation loop. International Journal of Thermal Sciences, 2018 (124), 162 - 173

[4] B. Knížat, P. Hlbočan, M. Mlkvik. CFD simulation of a natural circulation helium loop. In Scientific Proceedings Faculty of Mechanical Engineering STU in Bratislava, Nakladateľstvo STU, Bratislava, 2015, 57 - 62

[5] F. Urban, et al. Modelovanie prirodzenej cirkulácie hélia v experimentálnej héliovej slučke. Výskumná správa projektu Výskumné centrum ALLEGRO, Strojnícka fakulta STU v Bratislave, Bratislava, 2016

[6] V. Kutiš, J. Jakubec, J. Paulech, G. Gálik, T. Sedlár. CFD Analysis of Downcomer of Nuclear Reactor VVER 440. Journal of Mechanical Engineering - Strojnícky časopis, 2016 (66), No. 2, 55 - 62

[7] F. Dzianik, Š. Gužela. Hydrodynamic properties of high temperature natural circulating helium cooling loop. Journal of Mechanical Engineering - Strojnícky časopis, 2017 (67), No. 1, 29 - 36

[8] Š. Gužela, F. Dzianik, M. Juriga, J. Kabát. Shell and tube heat exchanger - the heat transfer area design process. Journal of Mechanical Engineering - Strojnícky časopis, 2017 (67), No. 2, 13 - 24

[9] VDI-Wärmeatlas. 10th edition. VDI-Gesellschaft Verfahrenstechnik und Chemieingenieurwesen (Ed.), Springer-Verlag, Berlin - Heidelberg - New York, 2006

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