热力发电2024，Vol.53Issue(9)：109-117,9.DOI:10.19666/j.rlfd.202403057
基于内管移动的卧式管壳式相变储热器储热性能优化研究
Optimization study on thermal storage performance of horizontal shell and tube latent heat thermal energy storage exchangers based on inner tube movement
摘要
Abstract
Latent heat thermal energy storage technology can realize recovery and supply of heat during solid-state hydrogen storage and release process,achieving self-thermal balance inside the solid-state hydrogen storage tank,and improve the hydrogen storage and release performance.For horizontal tube and shell latent heat thermal energy storage exchanger,a new movement method where the inner tube is placed eccentrically to rotate around the central axis is proposed.By the Fluent software,the user-defined function UDF is written using the dynamic mesh technique,and the influence of eccentric distance and rotation velocity of the inner tube on heat storage performance is focused.The results show that,compared with the conventional static arrangement of the central inner tube,the rotation movement of the eccentric inner tube can improve the heat storage performance significantly.The heat storage time reaches the shortest when the eccentric distance is 9 mm and the rotation velocity is 0.10 r/min,namely decreases by 92.16%,and the time average heat storage rate increases by 11.51 times.The heat storage time reduces by 13.57%when the eccentric distance is 9 mm and the rotation velocity is decreased from 0.30 r/min to 0.1 r/min,it decreases by 70.48%when the rotation velocity is 0.10 r/min and the eccentric distance is increased from 3 mm to 9 mm.The study results can provide a new idea for performance optimization of horizontal shell and tube latent heat thermal energy storage exchangers in hydrogen storage field.关键词
卧式管壳式相变储热器/固态储氢/内管移动/储热性能/数值模拟Key words
horizontal shell and tube latent heat thermal energy storage exchanger/solid-state hydrogen storage/inner tube movement/heat storage performance/numerical simulation引用本文复制引用
周少斌,曹红梅,付宁,张民,郭丰瑞,王晓龙,高明..基于内管移动的卧式管壳式相变储热器储热性能优化研究[J].热力发电,2024,53(9):109-117,9.基金项目
中国华能集团有限公司总部科技项目(HNKJ24-HF36) （HNKJ24-HF36）
山东省自然科学基金项目(ZR2023ME025) Science and Technology Project of China Huaneng Group Co.,Ltd.(HNKJ24-HF36) （ZR2023ME025）
Natural Science Foundation Project of Shandong Province(ZR2023ME025) （ZR2023ME025）
