潜热储存的革命性变革:在立式壳管系统中采用创新的波状 PCM 容器形状提高排放性能

IF 4.8 2区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Journal of Computational Design and Engineering Pub Date : 2024-02-26 DOI:10.1093/jcde/qwae020
Hakim S. Sultan, H. Mohammed, Nirmalendu Biswas, Hussein Togun, Raed Khalid Ibrahem, Jasim M. Mahdi, W. Yaïci, Amir Keshmiri, P. Talebizadehsardari
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引用次数: 2

摘要

本文研究了各种参数(包括框架、之字形数字和外壳形状)对相变材料 (PCM) 的凝固过程和热能储存率的影响。研究还评估了导热流体流速以及在 RT35 和 RT35HC 之间改变 PCM 材料的影响。此外,该研究还比较了有框架系统和无框架系统,随后,在将人字形结构更改为弧形和反向弧形之前,使用各种人字形间距数对最佳情况进行了测试。通过对比不同情况下的液体分数、温度分布、凝固率和蓄热率,对研究结果进行了检验。结果表明,与无框架的几何形状相比,有框架的几何形状达到目标温度的速度要快 66%,在 PCM 中采用人字形外壳可以显著提高凝固时间和热回收率。随着 "之 "字形外壳中间距数的增加,改善率有所下降,但仍能改善凝固时间和热回收率。与其他起伏面相比,反弧形结构的性能最好。采用 RT35HC 的系统与采用 RT35 的系统相比,放电时间增加了 55%,而在放电过程的前 3000 秒,前者的放电率增加了 8.2%。
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Revolutionizing latent heat storage: boosting discharge performance with innovative undulated PCM container shapes in vertical shell-and-tube systems
This paper examines the impact of various parameters, including frames, zigzag number, and enclosure shape, on the solidification process and thermal energy storage rate of phase change materials (PCM). The study also assesses the effects of the flow rate of the heat transfer fluid as well as changing the materials of the PCM between RT35 and RT35HC. In addition, the study compares the framed vs unframed systems and, subsequently, the best case was tested with various zigzag pitch numbers before changing the zigzag shape structure to arc and reversed arc. The findings are examined by contrasting the different scenarios' liquid fractions, temperature distributions, solidification rates, and heat storage rates. The results show that the framed geometry is 66% faster to reach the target temperature compared to the unframed geometry and employing a zigzag enclosure in a PCM can significantly improve its solidification time and heat recovery rate. As the number of pitches in the zigzag enclosure increases, the improvement rate decreases but still improves the solidification time and heat recovery rate. The reverse arc-shaped structure has the best performance compared with the other undulated surfaces. For the system with RT35HC, the discharge time is 55% higher compared to that of the system with RT35, while the discharge rate is 8.2% higher for the former during the first 3000s of the discharging process.
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来源期刊
Journal of Computational Design and Engineering
Journal of Computational Design and Engineering Computer Science-Human-Computer Interaction
CiteScore
7.70
自引率
20.40%
发文量
125
期刊介绍: Journal of Computational Design and Engineering is an international journal that aims to provide academia and industry with a venue for rapid publication of research papers reporting innovative computational methods and applications to achieve a major breakthrough, practical improvements, and bold new research directions within a wide range of design and engineering: • Theory and its progress in computational advancement for design and engineering • Development of computational framework to support large scale design and engineering • Interaction issues among human, designed artifacts, and systems • Knowledge-intensive technologies for intelligent and sustainable systems • Emerging technology and convergence of technology fields presented with convincing design examples • Educational issues for academia, practitioners, and future generation • Proposal on new research directions as well as survey and retrospectives on mature field.
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