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Research on Optimized Design of In-Vessel Retention–External Reactor Vessel Cooling Strategy and Negative Effect Assessment [PDF]
Frontiers in Energy Research, 2022 Due to large uncertainty, the effectiveness of in-vessel retention (IVR) with external reactor vessel cooling (ERVC) for high-power reactors cannot be fully demonstrated during the transient process. To optimize the current IVR-ERVC strategy, the concept
Peng Chen +4 more
doaj +7 more sources
Experimental Research for CHF Sensitivity of Heat Flux Distribution under IVR Conditions
Science and Technology of Nuclear Installations, 2022 In-vessel retention (IVR) through external reactor vessel cooling (ERVC) is one of the most effective severe accident mitigation measures in the nuclear power plants.
Shilei Han +3 more
doaj +3 more sources
Can a nanofluid enhance the critical heat flux if the recirculating coolant contains debris?
Nuclear Engineering and Technology, 2022 In-vessel corium retention (IVR) during external reactor vessel cooling (ERVC) is a key severe accident management strategy adopted in advanced nuclear power plants. The injection of nanofluids has been regarded as a means of enhancing CHF when using the
Jihoon Han, Giju Nam, Hyungdae Kim
doaj +2 more sources
Uncertainty analysis of molten corium In-Vessel Retention under External Reactor Vessel Cooling
International Journal of Advanced Nuclear Reactor Design and Technology, 2023 External Reactor Vessel Cooling (ERVC) is a key measure to realize molten corium In-Vessel Retention (IVR). The uncertainty of severe accident in core leads to the uncertainty of molten pool parameters in lower head, which may threat the reliability of ...
Shihao Wu +6 more
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Influence of an in-vessel debris bed on the heat load to a reactor vessel under an IVR condition
Nuclear Engineering and Technology, 2023 We measured the heat load to a reactor vessel with and without the in-vessel debris bed under an IVR-ERVC condition. Mass transfer methodology was adopted based on heat and mass transfer analogy to achieve high Ra′H of order ∼1015 with compact test rigs.
Joon-Soo Park +2 more
doaj +1 more source
Coupled Analysis of Heat Transfer in a Molten Pool With Three-Layer Configuration
Frontiers in Energy Research, 2022 Understanding a reliable description of the heat transfer in the molten pool with three-layer configuration is inevitable for the design of severe accident mitigation measures in research reactors, such as IVR-ERVC.
Jian Deng +9 more
doaj +1 more source
Heat transfer characteristics of single-layer and two-layer corium pool in elliptical lower head
International Journal of Advanced Nuclear Reactor Design and Technology, 2022 In this study, we investigated the characteristics of natural convection heat transfer of single-layer and two-layer corium pool in the elliptical lower head by the numerical method.
Y.P. Zhang +6 more
doaj +1 more source
Effect of finned structure on critical heat flux (CHF) in downward-face pool boiling
Mechanical Engineering Journal, 2020 Critical heat flux (CHF) plays an important role as the upper limit of heat dissipation process during the in-vessel reactor external reactor vessel cooling (IVR-ERVC). IVR-ERVC is regarded as a very effective way to release the decay heat after the core
Kai WANG, Nejdet ERKAN, Koji OKAMOTO
doaj +1 more source
Nuclear Engineering and Technology, 2023 In the late in-vessel phase of a nuclear reactor severe accident, the internal heat transfer and crust evolution during the debris bed melting process have important effects on the thermal load distribution along the vessel wall, and further affect the ...
Chao Lv +4 more
doaj +1 more source
Science and Technology of Nuclear Installations, Volume 2020, Issue 1, 2020., 2020 In order to enhance the ability of severe accident mitigation for Pressurised Water Reactor (PWR), different kinds of severe accident mitigation strategies have been proposed. In‐Vessel Retention (IVR) is one of the important severe accident management means by External Reactor Vessel Cooling. Reactor cavity would be submerged to cool the molten corium
Dekui Zhan +5 more
wiley +1 more source