沸石-液态水吸附储热系统的释热特性

doi:10.19799/j.cnki.2095-4239.2021.0028

储能科学与技术 ›› 2021, Vol. 10 ›› Issue (3): 1103-1108.doi: 10.19799/j.cnki.2095-4239.2021.0028

沸石-液态水吸附储热系统的释热特性

令狐友强¹(), 徐德厚¹, 岳秀艳^2,³, 周学志¹(), 徐玉杰^1,^2,³, 盛勇^2,³, 左志涛^1,^2,³, 陈海生^1,^2,³

^1.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 551712
^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

收稿日期:2021-01-18 修回日期:2021-02-07 出版日期:2021-05-05 发布日期:2021-04-30
通讯作者: 周学志 E-mail:458149717@qq.com;zhouxuezhi@iet.cn
作者简介:令狐友强（1988—），男，硕士研究生，研究方向为吸附式储热技术，E-mail：458149717@qq.com
基金资助:
国家重点研发计划项目(2017YFB0903605);国家自然科学基金青年科学基金项目(51706222);贵州省科技基金计划项目(［2017］1160);中国科学院国际合作局国际伙伴计划(182211KYSB20170029);贵州省科技基金计划项目(［2017］1163)

Study on characteristics of the discharge process for zeolite-liquid water adsorption heat storage system

Youqiang LINGHU¹(), Dehou XU¹, Xiuyan YUE^2,³, Xuezhi ZHOU¹(), Yujie XU^1,^2,³, Yong SHENG^2,³, Zhitao ZUO^1,^2,³, Haisheng CHEN^1,^2,³

^1.Bijie High-tech Industrial Development Zone National Energy Large Scale Physical Energy Storage Technologies R&D Center, Bijie 551712, Guizhou, China
^2.Institute of Engineering Thermophysics, Beijing 100190, China
^3.Chinese Academy of Science, Beijing 100049, China

Received:2021-01-18 Revised:2021-02-07 Online:2021-05-05 Published:2021-04-30
Contact: Xuezhi ZHOU E-mail:458149717@qq.com;zhouxuezhi@iet.cn

摘要/Abstract

摘要：

吸附储热是一种有着较高储热密度和较低热损失的储热方式。沸石-液态水吸附储热系统以沸石颗粒作为储热介质，具有系统简单、换热性能好和储热密度大等优点。利用Fluent建立了反应器二维轴对称对流换热模型，分析了进水流速、反应器高径比和颗粒粒径对系统释热过程出口水温的影响。研究表明，在计算条件下，该系统能够获得最大70 °C的温升幅度，且进口流速越小，温升幅度越大；高径比越大，温升幅度越大，当高径比≥1.5时，温升不再随高径比的增加而增大；此外，粒径越小，反应速率和温升幅度越大，也越有利于沸石与水的充分反应。本研究有助于完善固-液吸附过程释热特性，为沸石-液态水吸附储热系统的设计和应用提供理论指导。

关键词: 储热技术, 吸附储热, 沸石颗粒, 释热特性, 出口水温

Abstract:

Adsorption heat storage is a heat storage method with high-heat storage density and low-heat loss. Zeolite-liquid water adsorption heat storage system with zeolite particles, as heat storage medium, has the advantages of a simple system, good circulation performance, and high efficiency. In this study, the characteristics of the discharge process in the zeolite-liquid water adsorption heat storage system were investigated. The two-dimensional axisymmetric convection heat transfer model of the reactor was established using Fluent. The influence of the inlet velocity, reactor aspect ratio, and particle size on the water temperature at the outlet during the discharge process was analyzed. The results showed that the maximum temperature rise of 70 ℃ can be obtained during the system's discharge process under the present calculation conditions. The smaller the inlet velocity, the larger the temperature rise, and the larger the ratio of height to diameter, the larger the temperature rise. When the aspect ratio exceeds 1.5, the temperature rise will not increase with the increase in aspect ratio. Besides, the smaller the particle size, the higher the reaction rate, and the higher the temperature rise, the more favorable it is for zeolite to fully react with water. This study improves the mechanism of the solid-liquid adsorption process and provides theoretical guidance for the design and application of the zeolite-liquid water adsorption heat storage system.

Key words: heat storage technology, adsorption heat storage, zeolite particles, discharge characteristics, water temperature at the outlet

中图分类号:

TK 02

令狐友强, 徐德厚, 岳秀艳, 周学志, 徐玉杰, 盛勇, 左志涛, 陈海生. 沸石-液态水吸附储热系统的释热特性[J]. 储能科学与技术, 2021, 10(3): 1103-1108.

Youqiang LINGHU, Dehou XU, Xiuyan YUE, Xuezhi ZHOU, Yujie XU, Yong SHENG, Zhitao ZUO, Haisheng CHEN. Study on characteristics of the discharge process for zeolite-liquid water adsorption heat storage system[J]. Energy Storage Science and Technology, 2021, 10(3): 1103-1108.

图/表 12

图1

图2

图3

表1

图4

图5

图6

图7

图8

图9

图10

图11

参考文献 14

1	汪翔, 陈海生, 徐玉杰, 等. 储热技术研究进展与趋势[J]. 科学通报, 2017, 62(15): 1602-1610.WANG X, CHEN H S, XU Y J, et al. Research progress and trend of heat storage technology[J]. Chinese Science Bulletin, 2017, 62(15): 1602-1610.
2	吴娟, 龙新峰. 太阳能热化学储能研究进展[J]. 化工进展, 2014, 33(12): 3238-3245.WU J, LONG X F. Research progress of solar thermal chemical energy storage[J]. Chemical Industry Progress, 2014, 33(12): 3238-3245.
3	LUCA S, HERBERT Z, JOHAN V B, et al. Sorption heat storage for long-term low-temperature applications: A review on the advancements at material and prototype scale[J]. Applied Energy, 2017, 12(190): 920-948.
4	闫霆, 王文欢, 王如竹. 化学吸附储热技术的研究现状及进展[J]. 材料导报, 2018, 32(12): 4107-4120.YAN T, WANG W H, WANG R Z. Present status and progress of research on chemical adsorption heat storage[J]. Materials Bulletin A: Review, 2018, 32(12): 4107-4120.
5	YEBOAH S K, DARKWA J. A critical review of thermal enhancement of packed beds for water vapour adsorption[J]. Renewable and Sustainable Energy Reviews, 2016, 4(58): 1500-1520.
6	CABEZA L F, SOLÉ A, BARRENECHE C. Review on sorption materials and technologies for heat pumps and thermal energy storage[J]. Renewable Energy, 2016, 14(32): 1-37.
7	GAEINI M, ZONDAG H A, RINDT C C. Effect of kinetics on the thermal performance of a sorption heat storage reactor[J]. Applied Thermal Engineering, 2016, 18(102): 520-531.
8	SCHAEFER M, THESS A. Modeling and simulation of closed low-pressure zeolite adsorbers for thermal energy storage[J]. International Journal of Heat and Mass Transfer, 2019, 22(139): 685-699.
9	FRÉDÉRIC K, DAMIEN G, KÉVYN J, et al. Sensitivity analysis of a zeolite energy storage model: Impact of parameters on heat storage density and discharge power density[J]. Renewable Energy, 2020, 25(149): 468-478.
10	谢云云. 基于水合盐复合材料的热化学储热性能试验和数值研究[D]. 北京: 华北电力大学, 2018.XIE Y Y. Experimental and numerical study of thermochemical heat storage performance based on hydrated salt composites[D]. Beijing: North China Electric Power University, 2018.
11	马小琨. 基于水合盐吸附的跨季节储热待性数值研究[D]. 北京: 华北电力大学, 2016.MA X K. Numerical study on interseasonal heat storage receptance based on hydrated salt adsorption[D]. Beijing: North China Electric Power University, 2016.
12	刘华, 彭佳杰, 余凯, 等. 活性氧化铝基质新型复合吸附剂的制备和储热性能[J]. 化工学报, 2020, 71(7): 3354-3361.LIU H, PENG J J, YU K, et al. Preparation and heat storage properties of novel composite adsorbents for activated alumina matrix[J]. CIESC Journal, 2020, 71(7): 3354-3361.
13	赵晓杰. 沸石分子筛吸附特性与影响因素的研究[D]. 天津: 天津科技大学, 2014.ZHAO X J. Study of zeolite adsorption characteristics and affecting factors[D]. Tianjin: Tianjin University of Science & Technology, 2005.
14	高瑞恒. 沸石在储能中的应用试验研究[D]. 北京: 北京工业大学, 2014.GAO R H. Experimental study on the application of zeolite in energy storage[D]. Beijing: Beijing University of Technology, 2005.

参数	取值
沸石密度, ρ_s/kg·m^-3	694.2
沸石比热容, c_s/J·kg^-1·K^-1	836
沸石热导率, k_s/W·m^-1·K^-1	0.2
初始床温, T₀/K	290
孔隙率, ε	0.4
进口水温, T_i/K	290
吸附热, ?H/kJ·kg^-1	1230
扩散系数, D_s0/m²·s^-1	2.92×10^-6
反应活化能E/J·mol^-1	28035

[1]	董浩晖, 王丽伟. 沸石13X在开式吸附储热中“反应波”现象研究[J]. 储能科学与技术, 2021, 10(2): 497-505.
[2]	王子逸, 徐玉杰, 周学志, 陈海生, 盛勇, 徐德厚, 令狐友强, 丁捷. 跨季节复合储热系统储/释热特性[J]. 储能科学与技术, 2020, 9(6): 1837-1846.
[3]	王会春，凌子夜，方晓明，苑坤杰，张正国. 六水氯化镁相变储热材料的研究进展[J]. 储能科学与技术, 2017, 6(2): 204-212.
[4]	徐勇, 柯秀芳, 张仁元, 黎天标. 基于储热技术的高温电蓄热产品的应用可行性分析[J]. 储能科学与技术, 2015, 4(6): 627-631.
[5]	于海涛, 高建民, 陈瑶. 锂储热技术在木材太阳能干燥中的应用与发展趋势[J]. 储能科学与技术, 2015, 4(4): 382-387.
[6]	王淑萍, 徐涛, 高学农, 方晓明, 汪双凤, 张正国. 膨胀石墨基复合相变储能材料的研究进展[J]. 储能科学与技术, 2014, 3(3): 210-215.

沸石-液态水吸附储热系统的释热特性

Study on characteristics of the discharge process for zeolite-liquid water adsorption heat storage system

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

图/表 12

参考文献 14

相关文章 6

编辑推荐

Metrics

本文评价