Numerical simulation analysis of the impact of cold-cap coverage on energy consumption in a HLLW joule-heating ceramic melter

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2025-04-23 DOI:10.1016/j.net.2025.103664

Lifeng Li , Xiaorui Qu , Zizheng Zhou , Dongqing Xu , Hongmei Xu , Qingbin Zhao , Kai Xu , Jing Ma

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引用次数: 0

Abstract

Computational fluid dynamics (CFD) technology was utilized to conduct a numerical simulation of the Joule-Heating Ceramic Melter (JHCM) employed in vitrification plants in China (VPC), with the aim of evaluating the effects of varying cold-cap coverage on energy consumption and efficiency. The simulation models were developed based on a representative glass formula for high-level liquid waste (HLLW) with elevated sulfur and sodium content, incorporating critical material parameters such as density, specific heat capacity, conversion degree, thermal conductivity, electrical conductivity, and kinematic viscosity. These parameters were essential for accurate predictions of temperature distribution and energy dynamics within the melter. The CFD model results indicate that increasing the cold-cap coverage significantly reduces energy loss by improving system heat retention, thereby decreasing the power input required to sustain operational temperatures. This result highlights the necessity of optimizing cold-cap coverage to enhance the efficiency and cost-effectiveness of HLLW vitrification processes. The findings offer valuable guidance for the design and operation of advanced JHCM systems, promoting more sustainable and efficient nuclear waste management approaches.

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冷帽覆盖对高温焦耳加热陶瓷熔体能耗影响的数值模拟分析

利用计算流体动力学（CFD）技术对焦耳加热陶瓷熔炼机（JHCM）进行了数值模拟，以评估不同冷帽覆盖范围对能耗和效率的影响。仿真模型基于高硫、高钠高含量废液（HLLW）的代表性玻璃公式，纳入了密度、比热容、转化率、导热系数、电导率和运动粘度等关键材料参数。这些参数对于准确预测熔体内的温度分布和能量动态至关重要。CFD模型结果表明，增加冷帽覆盖范围可以通过提高系统保热性显著减少能量损失，从而降低维持运行温度所需的功率输入。这一结果强调了优化冷帽覆盖的必要性，以提高高低温玻璃化工艺的效率和成本效益。这些发现为先进的JHCM系统的设计和运行提供了有价值的指导，促进了更可持续和高效的核废料管理方法。

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 Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development