基于 CFD-DEM 的移动床集热器太阳能驱动钙循环多物理场蓄热性能建模研究

IF 10.1 1区 工程技术 Q1 ENERGY & FUELS
Chao Song , Jinbo Che , Fengnian Wang , Rui Wang , Yinshi Li
{"title":"基于 CFD-DEM 的移动床集热器太阳能驱动钙循环多物理场蓄热性能建模研究","authors":"Chao Song ,&nbsp;Jinbo Che ,&nbsp;Fengnian Wang ,&nbsp;Rui Wang ,&nbsp;Yinshi Li","doi":"10.1016/j.apenergy.2024.124898","DOIUrl":null,"url":null,"abstract":"<div><div>Conventional solar thermochemical heat collector with direct solar-heating usually faces an issue of aperture being contaminated and the difficulty of real-time particle velocity control. Here, a three-dimensional multi-physics numerical solver coupling with optical and thermal stress sub-models is developed towards heat storage mechanization of calcium looping, considering discrete particle flow, continuous gas flow, solar radiation, temperature field, particle collision force and chemical reaction. Based on the CFD-DEM method, the particle velocity and temperature distribution in the moving bed collector present non-uniformity with a parabolic profile. Numerical simulation results show that the energy carriers can reach the high temperature of 1350 K with a calcination rate of 1.1 × 10<sup>−8</sup> kmol s<sup>−1</sup> under the incident power of 6.68 kW, exhibiting an efficient performance. Thermal stress sub-model of energy carriers, implemented by coupling the in-house code with CFD-DEM, reveals that high temperatures lead to a better conversion rate of CaL but with a higher risk of thermal fragmentation. A new wedge-shaped structure of redistributor is further proposed to effectively alleviate the non-uniformity of the particles flow and temperature distribution. The effect of solar energy input flux, particles absorptivity and emissivity are systematically investigated, laying a solid foundation for the further research on industrial amplification processes.</div></div>","PeriodicalId":246,"journal":{"name":"Applied Energy","volume":"379 ","pages":"Article 124898"},"PeriodicalIF":10.1000,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modelling investigation for multi-physics heat storage performance of solar-driven calcium looping in moving bed collector based on CFD-DEM\",\"authors\":\"Chao Song ,&nbsp;Jinbo Che ,&nbsp;Fengnian Wang ,&nbsp;Rui Wang ,&nbsp;Yinshi Li\",\"doi\":\"10.1016/j.apenergy.2024.124898\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Conventional solar thermochemical heat collector with direct solar-heating usually faces an issue of aperture being contaminated and the difficulty of real-time particle velocity control. Here, a three-dimensional multi-physics numerical solver coupling with optical and thermal stress sub-models is developed towards heat storage mechanization of calcium looping, considering discrete particle flow, continuous gas flow, solar radiation, temperature field, particle collision force and chemical reaction. Based on the CFD-DEM method, the particle velocity and temperature distribution in the moving bed collector present non-uniformity with a parabolic profile. Numerical simulation results show that the energy carriers can reach the high temperature of 1350 K with a calcination rate of 1.1 × 10<sup>−8</sup> kmol s<sup>−1</sup> under the incident power of 6.68 kW, exhibiting an efficient performance. Thermal stress sub-model of energy carriers, implemented by coupling the in-house code with CFD-DEM, reveals that high temperatures lead to a better conversion rate of CaL but with a higher risk of thermal fragmentation. A new wedge-shaped structure of redistributor is further proposed to effectively alleviate the non-uniformity of the particles flow and temperature distribution. The effect of solar energy input flux, particles absorptivity and emissivity are systematically investigated, laying a solid foundation for the further research on industrial amplification processes.</div></div>\",\"PeriodicalId\":246,\"journal\":{\"name\":\"Applied Energy\",\"volume\":\"379 \",\"pages\":\"Article 124898\"},\"PeriodicalIF\":10.1000,\"publicationDate\":\"2024-11-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0306261924022815\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0306261924022815","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0

摘要

传统的太阳能直接加热热化学集热器通常面临着孔径被污染和颗粒速度难以实时控制的问题。本文针对钙循环蓄热机械化问题,考虑离散粒子流、连续气体流、太阳辐射、温度场、粒子碰撞力和化学反应等因素,建立了光学和热应力子模型耦合的三维多物理场数值求解器。基于 CFD-DEM 方法,移动床收集器中的颗粒速度和温度分布呈现出抛物线轮廓的非均匀性。数值模拟结果表明,在入射功率为 6.68 kW 的情况下,能量载体可以达到 1350 K 的高温,煅烧速率为 1.1 × 10-8 kmol s-1,表现出高效的性能。通过将内部代码与 CFD-DEM 相结合而实现的能量载体热应力子模型显示,高温可提高 CaL 的转化率,但热碎裂的风险较高。此外,还提出了一种新的楔形再分布器结构,以有效缓解颗粒流动和温度分布的不均匀性。系统研究了太阳能输入通量、粒子吸收率和发射率的影响,为进一步研究工业放大过程奠定了坚实的基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Modelling investigation for multi-physics heat storage performance of solar-driven calcium looping in moving bed collector based on CFD-DEM

Modelling investigation for multi-physics heat storage performance of solar-driven calcium looping in moving bed collector based on CFD-DEM
Conventional solar thermochemical heat collector with direct solar-heating usually faces an issue of aperture being contaminated and the difficulty of real-time particle velocity control. Here, a three-dimensional multi-physics numerical solver coupling with optical and thermal stress sub-models is developed towards heat storage mechanization of calcium looping, considering discrete particle flow, continuous gas flow, solar radiation, temperature field, particle collision force and chemical reaction. Based on the CFD-DEM method, the particle velocity and temperature distribution in the moving bed collector present non-uniformity with a parabolic profile. Numerical simulation results show that the energy carriers can reach the high temperature of 1350 K with a calcination rate of 1.1 × 10−8 kmol s−1 under the incident power of 6.68 kW, exhibiting an efficient performance. Thermal stress sub-model of energy carriers, implemented by coupling the in-house code with CFD-DEM, reveals that high temperatures lead to a better conversion rate of CaL but with a higher risk of thermal fragmentation. A new wedge-shaped structure of redistributor is further proposed to effectively alleviate the non-uniformity of the particles flow and temperature distribution. The effect of solar energy input flux, particles absorptivity and emissivity are systematically investigated, laying a solid foundation for the further research on industrial amplification processes.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Applied Energy
Applied Energy 工程技术-工程:化工
CiteScore
21.20
自引率
10.70%
发文量
1830
审稿时长
41 days
期刊介绍: Applied Energy serves as a platform for sharing innovations, research, development, and demonstrations in energy conversion, conservation, and sustainable energy systems. The journal covers topics such as optimal energy resource use, environmental pollutant mitigation, and energy process analysis. It welcomes original papers, review articles, technical notes, and letters to the editor. Authors are encouraged to submit manuscripts that bridge the gap between research, development, and implementation. The journal addresses a wide spectrum of topics, including fossil and renewable energy technologies, energy economics, and environmental impacts. Applied Energy also explores modeling and forecasting, conservation strategies, and the social and economic implications of energy policies, including climate change mitigation. It is complemented by the open-access journal Advances in Applied Energy.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信