Numerical insight into heat transfer enhancement by granules inner-migration in a moving bed:A performance comparison between slanted-stick and plow-shaped agitator

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外文摘要：Waste heat recovery of high-temperature granules is one of the most promising sustainable energy supply and carbon reduction ways for industry.A moving bed indirect heat exchanger(MBIHE)with inner-migration was proposed for granular heat recovery.Granule migration and the enhanced heat transfer induced by two types of agitators(i.e.,agitator with slanted stick As and with plow-shaped surface Ap)in the MBIHE are analyzed based on DEM coupled with CFD.Owing to the effective agita-tion,the average heat transfer coefficient in the granule side is enhanced to～3 times compared to that without agitation.The heat recovery efficiency in the moving bed reached more than 70％with the agitations of either As or Ap.The heat efficiency of As is～7％higher than that of Ap,but with at least 60％greater rotational torque.To ensure reliable agitation,the Ap is suggested to be adopted in the MBIHE to induce granule migration.

外文关键词：

Waste heat recoveryHigh-temperature granuleGranule migrationHeat transfer enhancementIndustry energy saving

作者：

Binfan Jiang、Hao Pei、Dehong Xia、Haiyang Wang

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作者单位：

School of Energy and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China

Shunde Graduate School of University of Science and Technology Beijing,Guangdong 528399,China

Jianlong Group & USTB Joint Laboratory,Beijing 100083,China

基金：

国家自然科学基金国家自然科学基金Guangdong Basic and Applied Basic Research Foundation中央高校基本科研业务费专项中央高校基本科研业务费专项Jianlong Group & USTB Joint Laboratory

项目编号：

52106070522760482020A1515111014FRF-TP-20-058A1FRF-EYIT-23-07

出版年：

2024

DOI：

10.1016/j.partic.2023.10.009

颗粒学报(英文版)

中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD

影响因子：0.632

ISSN：1674-2001

年,卷(期)：2024.89(6)

参考文献量30