DOI: 10.55176/2414-1038-2021-4-195-202
Authors & Affiliations
Molotova I.A.1,2, Zabirov A.R.1,2, Vinogradov M.M.1, Yagov V.V.1
1 National Research University Moscow Power Engineering Institute, Moscow, Russia
2 Joint Institute for High Temperatures of Russian Academy of Sciences, Moscow, Russia
Molotova I.A.1,2 – Student of the Department Engineering Thermophysics, National Research University Moscow Power Engineering Institute; Research Intern of the Laboratory no. 5 of Engineering Thermophysics; Joint Institute for High Temperatures of Russian Academy of Sciences. Contacts: 14, Krasnokazarmennaya st., Moscow, 111250, Russia. Tel.: +7 (495) 484-25-92, (985) 545-02-25; e-mail:
Zabirov A.R.1,2 – Senior Researcher, Cand. Sci. (Techn.) of the laboratory no. 5 of Engineering Thermophysics, Joint Institute for High Temperatures of Russian Academy of Sciences; National Research University Moscow Power Engineering Institute.
Vinogradov M.M.1 – Student of the Department of Engineering Thermophysics.
Yagov V.V.1 – Professor, Dr. of Sci. (Techn.).
Abstract
The process of cooling high-temperature bodies in liquids is an important physical process, in particular, for the safety of nuclear plants. After the accident at the Fukushima-1 nuclear power plant in 2011, large-scale research was launched to find a new accident tolerant fuel. Studying the effect of the properties of new materials on heat transfer during cooling in the case of repeated flooding of the active zone and the possibility of accurately predicting the transition temperature to the intensive cooling regime will allow substantiating the choice of a new type of tolerant fuel from the standpoint of thermophysics. The aim of this work was an experimental study of the cooling processes of high-temperature cylindrical bodies made of various metals in liquids, as well as determining the effect of coating properties on heat transfer during cooling. A large experimental data array was obtained on the cooling of cylindrical samples; experiments were carried out on smooth cylinders made of various metals, as well as on copper cylinders with various coatings and different degrees of roughness (gold coating, stainless steel coatings).
Keywords
NPP safety, accident tolerant fuel, unsteady heat transfer, microbubble boiling, subcooled liquid
Article Text (PDF, in Russian)
UDC 536.24