A novel experimental investigation to enhance the performance of thermal energy storage system using active heat transfer

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress Pub Date : 2025-02-20 DOI:10.1016/j.tsep.2025.103419

Abhishek Agrawal , Dibakar Rakshit , Man Pun Wan

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Abstract

The present experimental research focuses on active thermal enhancement for efficient energy storage. The effect of mixing the PCM during the charging process using a rotating stirrer is investigated. During the experimental study, D-mannitol is selected as PCM for energy storage inside an LHTES system suitable for solar absorption-based cooling applications. The result illustrates that stirring is an effective method to achieve faster melting by creating forced convection currents and developing thermal equilibrium between the PCM layers. The 1200 s reduction in charging time of D-mannitol as PCM is observed when the stirrer rotating at 200 RPM is introduced in the PCM tube. It is observed that the 65 % melt fraction of PCM is achieved in 9600 s and 8460 s with and without stirring, respectively. However, with a further increase in melt fraction by 35 %, 1280 s less time is taken while comparing the stirring case with the non-stirring case. Further, it is also reported that the net energy saving due to the implantation of the stirrer is 52 kJ, which is responsible for enhancing the charging efficiency by 3.4 %. Hence, this experimental study indicates the efficacy of active stirring in developing an efficient LHTES system.

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来源期刊

Thermal Science and Engineering Progress Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

7.20

自引率

10.40%

发文量

327

审稿时长

41 days

期刊介绍： Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.