{"title":"微通道平板换热器热水热化学储能系统的实验研究","authors":"Yong Zhang , Ziwei Chen , Jianbin Chen , Michele Bottarelli , Yuehong Su , Saffa Riffat","doi":"10.1016/j.energy.2025.136539","DOIUrl":null,"url":null,"abstract":"<div><div>Integrating open thermochemical energy storage (TCES) with domestic central heating system remains challenging due to differences in heat transfer media. To overcome these, two distinct TCES system configurations for water heating were previously developed: one incorporating a detached finned microchannel heat exchanger (DFHEX-TCES) and another utilizing an internal bare microchannel heat exchanger (IBHEX-TCES), both validated through simulation. In this study, a versatile TCES experimental platform was developed to evaluate and compare these configurations under various operating conditions. Results demonstrated that while both single-layer configurations achieved comparable peak water temperature lifts, the DFHEX-TCES significantly outperformed the IBHEX-TCES by maintaining temperature lifts for approximately 1.5 times longer. At a low airflow rate (17 m<sup>3</sup> h<sup>−1</sup>), both reactors reached peak temperature lifts around 5.7 °C, but DFHEX-TCES maintained lifts above 5 °C nearly twice as long. Increasing airflow to 34 m<sup>3</sup> h<sup>−1</sup> enhanced the DFHEX-TCES peak temperature lift to approximately 9 °C, and extended the duration to nearly 90 min, roughly triple that of IBHEX-TCES under identical conditions. Furthermore, adopting a multilayer DFHEX-TCES extended this duration by more than twofold. This study demonstrates the practical feasibility of DFHEX-TCES for domestic water heating and highlights the advantages of the multilayer modular design in enhancing thermal performance.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"328 ","pages":"Article 136539"},"PeriodicalIF":9.0000,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental study on a thermochemical energy storage system for water heating with microchannel flat tube heat exchangers\",\"authors\":\"Yong Zhang , Ziwei Chen , Jianbin Chen , Michele Bottarelli , Yuehong Su , Saffa Riffat\",\"doi\":\"10.1016/j.energy.2025.136539\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Integrating open thermochemical energy storage (TCES) with domestic central heating system remains challenging due to differences in heat transfer media. To overcome these, two distinct TCES system configurations for water heating were previously developed: one incorporating a detached finned microchannel heat exchanger (DFHEX-TCES) and another utilizing an internal bare microchannel heat exchanger (IBHEX-TCES), both validated through simulation. In this study, a versatile TCES experimental platform was developed to evaluate and compare these configurations under various operating conditions. Results demonstrated that while both single-layer configurations achieved comparable peak water temperature lifts, the DFHEX-TCES significantly outperformed the IBHEX-TCES by maintaining temperature lifts for approximately 1.5 times longer. At a low airflow rate (17 m<sup>3</sup> h<sup>−1</sup>), both reactors reached peak temperature lifts around 5.7 °C, but DFHEX-TCES maintained lifts above 5 °C nearly twice as long. Increasing airflow to 34 m<sup>3</sup> h<sup>−1</sup> enhanced the DFHEX-TCES peak temperature lift to approximately 9 °C, and extended the duration to nearly 90 min, roughly triple that of IBHEX-TCES under identical conditions. Furthermore, adopting a multilayer DFHEX-TCES extended this duration by more than twofold. This study demonstrates the practical feasibility of DFHEX-TCES for domestic water heating and highlights the advantages of the multilayer modular design in enhancing thermal performance.</div></div>\",\"PeriodicalId\":11647,\"journal\":{\"name\":\"Energy\",\"volume\":\"328 \",\"pages\":\"Article 136539\"},\"PeriodicalIF\":9.0000,\"publicationDate\":\"2025-05-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0360544225021814\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0360544225021814","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
摘要
由于传热介质的不同,开放式热化学储能(TCES)与家庭集中供暖系统的集成仍然具有挑战性。为了克服这些问题,之前开发了两种不同的水加热TCES系统配置:一种采用分离式翅片微通道热交换器(DFHEX-TCES),另一种采用内部裸微通道热交换器(IBHEX-TCES),两者都通过模拟验证。在本研究中,开发了一个通用的TCES实验平台,以评估和比较不同操作条件下的这些配置。结果表明,虽然两种单层结构都能获得相当的峰值水温提升,但DFHEX-TCES的性能明显优于IBHEX-TCES,其维持温度提升的时间约为1.5倍。在低气流速率下(17 m3 h - 1),两个反应器的峰值温度升程都在5.7°C左右,但DFHEX-TCES在5°C以上的温度升程几乎是前者的两倍。当气流增加到34 m3 h−1时,DFHEX-TCES的峰值温升提高到约9°C,持续时间延长到近90 min,大约是相同条件下IBHEX-TCES的三倍。此外,采用多层DFHEX-TCES将该持续时间延长了两倍以上。本研究论证了DFHEX-TCES用于生活热水加热的实际可行性,并突出了多层模块化设计在提高热工性能方面的优势。
Experimental study on a thermochemical energy storage system for water heating with microchannel flat tube heat exchangers
Integrating open thermochemical energy storage (TCES) with domestic central heating system remains challenging due to differences in heat transfer media. To overcome these, two distinct TCES system configurations for water heating were previously developed: one incorporating a detached finned microchannel heat exchanger (DFHEX-TCES) and another utilizing an internal bare microchannel heat exchanger (IBHEX-TCES), both validated through simulation. In this study, a versatile TCES experimental platform was developed to evaluate and compare these configurations under various operating conditions. Results demonstrated that while both single-layer configurations achieved comparable peak water temperature lifts, the DFHEX-TCES significantly outperformed the IBHEX-TCES by maintaining temperature lifts for approximately 1.5 times longer. At a low airflow rate (17 m3 h−1), both reactors reached peak temperature lifts around 5.7 °C, but DFHEX-TCES maintained lifts above 5 °C nearly twice as long. Increasing airflow to 34 m3 h−1 enhanced the DFHEX-TCES peak temperature lift to approximately 9 °C, and extended the duration to nearly 90 min, roughly triple that of IBHEX-TCES under identical conditions. Furthermore, adopting a multilayer DFHEX-TCES extended this duration by more than twofold. This study demonstrates the practical feasibility of DFHEX-TCES for domestic water heating and highlights the advantages of the multilayer modular design in enhancing thermal performance.
期刊介绍:
Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics.
The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management.
Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.