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

作     者：Binfan Jiang Hao Pei Dehong Xia Haiyang Wang Binfan Jiang;Hao Pei;Dehong Xia;Haiyang Wang

作者机构：School of Energy and Environmental EngineeringUniversity of Science and Technology BeijingBeijing 100083China Shunde Graduate School of University of Science and Technology BeijingGuangdong 528399China Jianlong Group&USTB Joint LaboratoryBeijing 100083China 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2024年第89卷第6期

页      面：109-116页

核心收录：

学科分类：080701[工学-工程热物理] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by National Natural Science Foundation of China(grant Nos.52106070,52276048) Guangdong Basic and Applied Basic Research Foundation(grant No.2020A1515111014) Fundamental Research Funds for the Central Universities(grant No.FRF-TP-20-058A1,FRF-EYIT-23-07) 

主　　题：Waste heat recovery High-temperature granule Granule migration Heat transfer enhancement Industry energy saving 

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 *** migration and the enhanced heat transfer induced by two types of agitators(i.e.,agitator with slanted stick A_(s)and with plow-shaped surface A_(p))in the MBIHE are analyzed based on DEM coupled with *** to the effective agitation,the average heat transfer coefficient in the granule side is enhanced to∼3 times compared to that without *** heat recovery efficiency in the moving bed reached more than 70%with the agitations of either A_(s)or A_(p).The heat efficiency of A_(s)is∼7%higher than that of A_(p),but with at least 60%greater rotational *** ensure reliable agitation,the A_(p)is suggested to be adopted in the MBIHE to induce granule migration.