Lei Shi, Cunwen Huang, Ruibin Ning, Jiajun Chen, Nianben Zheng, Tian Zhou, Zhiqiang Sun
{"title":"Photo-thermal conversion and energy storage characteristics of magnetic phase change composites","authors":"Lei Shi, Cunwen Huang, Ruibin Ning, Jiajun Chen, Nianben Zheng, Tian Zhou, Zhiqiang Sun","doi":"10.1016/j.est.2024.114720","DOIUrl":null,"url":null,"abstract":"<div><div>The problem of solar intermittency can be effectively addressed by solar-to-thermal energy storage using phase change materials (PCMs). Nevertheless, intricate operating scenarios and the extreme environment of PCMs restrict their uses, and the solar energy selective absorption also impedes the attainment of high photo-thermal conversion. In this study, paraffin wax (PW) was combined with styrene-ethylene-butylene-styrene (SEBS) and magnetic nanoparticles Fe<sub>3</sub>O<sub>4</sub> to synthesize a novel kind of magnetic PCMs (PW/SEBS/Fe<sub>3</sub>O<sub>4</sub>). Experimental verification and simulation analysis were carried out. The results have showed that the PW/SEBS/Fe<sub>3</sub>O<sub>4</sub> achieved an overall solar absorptance of 95 %, whose energy storage capacity and photo-thermal conversion were superior to those of pure PW. The PW/SEBS/Fe<sub>3</sub>O<sub>4</sub> showed exceptional thermal and cyclic stability, completed phase transition rapidly, and reached a greater equilibrium temperature with the rise in light intensity. Although the PW/SEBS/Fe<sub>3</sub>O<sub>4</sub> with 1.2 g Fe<sub>3</sub>O<sub>4</sub> has better photo-thermal storage capacity, the PW/SEBS/Fe<sub>3</sub>O<sub>4</sub> with 2.4 g Fe<sub>3</sub>O<sub>4</sub> has more flexible application when considering the magneto-thermal effect. Furthermore, based on the thermo-physical property, the magneto-thermal effect of the magnetic PCMs was simulated using commercial software. This research offers a new concept for solar-thermal uses of building insulation and magnetic thermal switches.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114720"},"PeriodicalIF":8.9000,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of energy storage","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352152X24043068","RegionNum":2,"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
Abstract
The problem of solar intermittency can be effectively addressed by solar-to-thermal energy storage using phase change materials (PCMs). Nevertheless, intricate operating scenarios and the extreme environment of PCMs restrict their uses, and the solar energy selective absorption also impedes the attainment of high photo-thermal conversion. In this study, paraffin wax (PW) was combined with styrene-ethylene-butylene-styrene (SEBS) and magnetic nanoparticles Fe3O4 to synthesize a novel kind of magnetic PCMs (PW/SEBS/Fe3O4). Experimental verification and simulation analysis were carried out. The results have showed that the PW/SEBS/Fe3O4 achieved an overall solar absorptance of 95 %, whose energy storage capacity and photo-thermal conversion were superior to those of pure PW. The PW/SEBS/Fe3O4 showed exceptional thermal and cyclic stability, completed phase transition rapidly, and reached a greater equilibrium temperature with the rise in light intensity. Although the PW/SEBS/Fe3O4 with 1.2 g Fe3O4 has better photo-thermal storage capacity, the PW/SEBS/Fe3O4 with 2.4 g Fe3O4 has more flexible application when considering the magneto-thermal effect. Furthermore, based on the thermo-physical property, the magneto-thermal effect of the magnetic PCMs was simulated using commercial software. This research offers a new concept for solar-thermal uses of building insulation and magnetic thermal switches.
期刊介绍:
Journal of energy storage focusses on all aspects of energy storage, in particular systems integration, electric grid integration, modelling and analysis, novel energy storage technologies, sizing and management strategies, business models for operation of storage systems and energy storage developments worldwide.