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
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.).
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).
NPP safety, accident tolerant fuel, unsteady heat transfer, microbubble boiling, subcooled liquid
- Yagov V.V., Zabirov A.R., Kanin P.K. Heat Transfer at Cooling High-Temperature Bodies in Subcooled Liquids. International Journal of Heat and Mass Transfer, 2018, vol. 126, Part A, pp. 823–830.
- Zinkle S.J., Was G.S. Materials Challenges in Nuclear Energy. Acta Materialia, 2013, vol. 61, issue 3, pp. 735–758.
- Aziz S., Hewitt G.F., Kenning D.B.R. Heat Transfer Regimes in Forced-Convection Film Boiling on Spheres. Proc. 8th International Heat Transfer Conference, 1986, vol. 5, pp. 2149–2154.
- Zvirin Y., Hewitt G.F., Kenning D.B.R. Boiling on Free-Falling Spheres: Drag and Heat Transfer Coefficients. Experimental Heat Transfer, 1990, vol. 3, no. 3, pp. 185–214.
- Yagov V.V., Leksin M.A., Zabirov A.R., Denisov M.A. Film Boiling of Subcooled Liquids. Part II: Steady Regimes of Subcooled Liquids Film Boiling. International Journal of Heat and Mass Transfer, 2016, vol. 100, pp. 918–926.
- Yagov V.V., Zabirov A.R., Kaban'kov O.N., Minko M.V. Heat Transfer during Cooling of High Temperature Spheres in Subcooled Water at Different Pressures. International Journal of Heat and Mass Transfer, 2017, vol. 110, pp. 219–230.
- Dedov A.V., Zabirov A.R., Sliva A.P., Fedorovich S.D., Yagov V.V. Effect of Coating by a Carbon Nanostructure on Heat Transfer with Unsteady Film Boiling. High Temperature, 2019, vol. 57, pp. 57–63.