Performance in the Discharge Process of a Novel Zeolite-Water Adsorption Thermal Energy Storage System

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  • 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. National Energy Large Scale Physical Energy Storage Technologies R&D Center (Bijie), Bijie 551712, China

网络出版日期: 2023-11-27

基金资助

This study is financially supported by National Key R&D Plan (Grant No. 2017YFB0903605), the National Science Fund for Distinguished Young Scholars (Grant No. 51925604), International Partnership Program, Bureau of International Cooperation of Chinese Academy of Sciences (Grant No. 182211KYSB20170029), Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA21070302) and Beijing Key Laboratory of Distributed Combined Cooling Heating and Power System.

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Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023

Performance in the Discharge Process of a Novel Zeolite-Water Adsorption Thermal Energy Storage System

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  • 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. National Energy Large Scale Physical Energy Storage Technologies R&D Center (Bijie), Bijie 551712, China

Online published: 2023-11-27

Supported by

This study is financially supported by National Key R&D Plan (Grant No. 2017YFB0903605), the National Science Fund for Distinguished Young Scholars (Grant No. 51925604), International Partnership Program, Bureau of International Cooperation of Chinese Academy of Sciences (Grant No. 182211KYSB20170029), Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA21070302) and Beijing Key Laboratory of Distributed Combined Cooling Heating and Power System.

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023

摘要

为了有效回收中低温热能,提出了一种新型的沸石-水冷热联供系统。该系统巧妙地将释能过程中的沸石-水吸附过程与水蒸发制冷过程耦合起来,实现了冷能和热能的同时产生。建立了更精确的沸石与水吸附动力学模型,并对该系统释能过程的热力学性能进行了数值分析。结果表明,该系统具有较高的能量转换系数为1.49,能量密度为1216.6 kJ/(kg-沸石)。揭示了系统能量生成、能量转换系数和能量密度等性能随释能过程关键参数的变化规律。该研究为低中品位热能的高效利用提供了途径。

本文引用格式

YUE Xiuyan, XU Yujie, ZHOU Xuezhi, ZHANG Xinjing, LINGHU Youqiang, WANG Xiang, CHEN Haisheng . Performance in the Discharge Process of a Novel Zeolite-Water Adsorption Thermal Energy Storage System[J]. 热科学学报, 2023 , 32(4) : 1626 -1634 . DOI: 10.1007/s11630-023-1727-9

Abstract

In order to effectively recover low and medium grade heat energy, a novel combined cooling and heating storage system based on zeolite-water is proposed in this paper. The system coupled the zeolite-water adsorption process with the water evaporation refrigeration process during discharging process to realize generating cold energy and heat energy simultaneously. A more accurate kinetic model of zeolite and water adsorption is developed, and the thermodynamic performance of discharging process of the system is numerically analyzed. The results show the system has the higher energy conversion coefficient of 1.49 and the higher energy density of 1216.6 kJ/kg-zeolite. The change laws of system performances, such as energy generated, energy conversion coefficient and energy density, with key parameters during discharging process are revealed. The study provides a way for efficient utilization of low and medium grade heat energy.  

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