基于圆柱封装单元的水合盐相变储热填充床的储释特性实验研究

doi:10.19799/j.cnki.2095-4239.2024.0187

储能科学与技术 ›› 2024, Vol. 13 ›› Issue (8): 2623-2633.doi: 10.19799/j.cnki.2095-4239.2024.0187

基于圆柱封装单元的水合盐相变储热填充床的储释特性实验研究

刘云汉¹^,²(), 王亮²^,³, 张双², 林曦鹏², 葛志伟², 白亚开², 林霖², 王艺斐⁴(), 陈海生¹^,²^,³()

^1.华北电力大学能源动力与机械工程学院，北京 102206
^2.中国科学院工程热物理研究所，北京 100190
^3.中国科学院大学，北京 100049
^4.毕节高新技术产业开发区国家能源大规模物理储能技术研发中心，贵州毕节 551700

收稿日期:2024-03-05 修回日期:2024-03-19 出版日期:2024-08-28 发布日期:2024-08-15
通讯作者: 王艺斐,陈海生 E-mail:120192102106@ncepu.edu.cn;wangyifei@iet.cn;chen_hs@mail.etp.ac.cn
作者简介:刘云汉（1994—），男，博士研究生，主要研究方向为相变储热，E-mail：120192102106@ncepu.edu.cn；
基金资助:
国家自然科学基金项目(52106277);贵州省科技计划项目（黔科合基础-ZK［2023］001）

Experimental study on heat storage and discharge characteristics of packed bed based on hydrated salt using cylindrical encapsulation units

Yunhan LIU¹^,²(), Liang WANG²^,³, Shuang ZHANG², Xipeng LIN², Zhiwei GE², Yakai BAI², Lin LIN², Yifei WANG⁴(), Haisheng CHEN¹^,²^,³()

^1.School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
^2.Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
^3.University of Chinese Academy of Sciences, Beijing 100049, China
^4.National Energy Large Scale Physical Energy Storage Technologies R&D Center of Bijie High-tech Industrial Development Zone, Bijie 551700, Guizhou, China

Received:2024-03-05 Revised:2024-03-19 Online:2024-08-28 Published:2024-08-15
Contact: Yifei WANG, Haisheng CHEN E-mail:120192102106@ncepu.edu.cn;wangyifei@iet.cn;chen_hs@mail.etp.ac.cn

摘要/Abstract

摘要：

水合盐相变储热技术具有储热密度高、成本低等优势，在清洁供暖中具有广阔应用前景。本研究设计并搭建了以三水合乙酸钠作为储热材料，以圆柱形相变材料封装单元作为基础单元的填充床相变储热装置。通过实验研究填充床储热装置的运行特性，研究了流量和储热温度对装置的储释热用时、出口温度、热效率及储热密度的影响。实验结果表明：提高储热温度和增大流量可缩短储热用时、提升热效率和储热密度。储热装置的热效率可达94.73%，储能密度可达71.77 kW·h/m³。

关键词: 无机水合盐, 相变材料, 储热装置, 填充床

Abstract:

Latent heat thermal energy storage technology based on hydrated salt phase-change materials (PSMs) characterized by high energy storage density and low cost, holds significant promise for widespread application in clean heating. In this study, we designed and constructed a packed-bed phase-change thermal storage system using sodium acetate trihydrate as the thermal storage material and cylindrical PSM encapsulation units as the fundamental building blocks. Through experimental investigations of the operational characteristics of the packed-bed thermal storage system, we explored the impact of the flow rate and thermal storage temperature on the charging/discharging duration, outlet temperature, thermal storage efficiency, and energy storage density of the system. The experimental results indicate that elevating the thermal storage temperature and increasing the flow rate can reduce the charging duration, enhance the thermal storage efficiency, and increase the energy storage density. The thermal efficiency of the storage system can reach 94.73%, and the energy storage density can achieve 71.77 kWh/m³.

Key words: inorganic hydrated salt, phase change material, thermal storage device, packed bed

中图分类号:

TK 121

刘云汉, 王亮, 张双, 林曦鹏, 葛志伟, 白亚开, 林霖, 王艺斐, 陈海生. 基于圆柱封装单元的水合盐相变储热填充床的储释特性实验研究[J]. 储能科学与技术, 2024, 13(8): 2623-2633.

Yunhan LIU, Liang WANG, Shuang ZHANG, Xipeng LIN, Zhiwei GE, Yakai BAI, Lin LIN, Yifei WANG, Haisheng CHEN. Experimental study on heat storage and discharge characteristics of packed bed based on hydrated salt using cylindrical encapsulation units[J]. Energy Storage Science and Technology, 2024, 13(8): 2623-2633.

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基于圆柱封装单元的水合盐相变储热填充床的储释特性实验研究

Experimental study on heat storage and discharge characteristics of packed bed based on hydrated salt using cylindrical encapsulation units

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