Experimental investigations addressing steam release in the water pool through a multi-hole sparger and spray water activation in the gas space

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Design Pub Date : 2025-05-26 DOI:10.1016/j.nucengdes.2025.114175

A. Oliva , D. Paladino , S. Carnevali , S. Paranjape , D. Grishchenko , P. Kudinov , S. Mimouni

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Abstract

This article presents the experimental results and the phenomenological analyses of the H2P4 tests performed in the PANDA facility, within the OECD/NEA HYMERES project. H2P4 series is characterized by two phases: (i) the steam injection in the water pool with development of thermally stratified layer and pressurization of the system, and (ii) water spray injection above the pool to depressurize the gas space. This article analyzes two tests that are characterized by different sparger submergence levels. The results indicate that the sparger submergence affects the pool’s thermal behavior, and the pressurization history. A decrease in submergence height leads to a faster pressurization of the vessel. An analysis of the experimental data is carried out using mass and energy balances for the liquid and gas volumes. This analysis contributes to the understanding of the pool phenomena and suggests that mass and energy are lost through vaporization at the liquid–gas interface and a significant amount of steam is condensed at the walls.

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实验研究了通过多孔喷射器在水池中释放蒸汽和在气体空间中激活喷雾水的问题

本文介绍了在OECD/NEA HYMERES项目的PANDA设施中进行的H2P4测试的实验结果和现象学分析。H2P4系列具有两个阶段的特征：(1)池内注汽，形成热分层层，使系统增压；(2)池上方喷水，使气空间减压。本文分析了两种不同浸没水平的试验。结果表明，分散体的浸入影响了池的热行为和加压历史。下潜高度的降低导致了容器更快的加压。利用液体和气体体积的质量和能量平衡对实验数据进行了分析。这一分析有助于对池现象的理解，并表明质量和能量是通过在液气界面蒸发而损失的，大量的蒸汽在壁上凝结。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Engineering and Design 工程技术-核科学技术

CiteScore

3.40

自引率

11.80%

发文量

377

审稿时长

5 months

期刊介绍： Nuclear Engineering and Design covers the wide range of disciplines involved in the engineering, design, safety and construction of nuclear fission reactors. The Editors welcome papers both on applied and innovative aspects and developments in nuclear science and technology. Fundamentals of Reactor Design include: • Thermal-Hydraulics and Core Physics • Safety Analysis, Risk Assessment (PSA) • Structural and Mechanical Engineering • Materials Science • Fuel Behavior and Design • Structural Plant Design • Engineering of Reactor Components • Experiments Aspects beyond fundamentals of Reactor Design covered: • Accident Mitigation Measures • Reactor Control Systems • Licensing Issues • Safeguard Engineering • Economy of Plants • Reprocessing / Waste Disposal • Applications of Nuclear Energy • Maintenance • Decommissioning Papers on new reactor ideas and developments (Generation IV reactors) such as inherently safe modular HTRs, High Performance LWRs/HWRs and LMFBs/GFR will be considered; Actinide Burners, Accelerator Driven Systems, Energy Amplifiers and other special designs of power and research reactors and their applications are also encouraged.