[2021-Vol.18-Issue 5]Magnetic Field-induced Enhancement of Phase Change Heat Transfer via Biomimetic Porous Structure for Solar-thermal Energy Storage
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Journal of Bionic Engineering (2021) 18:1215–1224

Magnetic Field-induced Enhancement of Phase Change Heat Transfer via Biomimetic Porous Structure for Solar-thermal Energy Storage

 Juan Li1,2 · Zhangyu Zhu1  · Adeel Arshad2  · Shuai Zhang2  · Lei Shi2,3 · Yuying Yan2 

1 School of Mechanical and Electrical Engineering, Nanjing Forestry University, Nanjing 210037, People’s Republic of China
2 Fluids and Thermal Engineering Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
3 School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, People’s Republic of China

AbstractMultifunctional phase change composites are in great demand for all kinds of industrial technologies and applications, which have both superior latent heat capacity and excellent solar-thermal conversion capability. In this research, biomimetic phase change composites are made by inspired by natural systems, successfully getting the high thermal conductivity of carbon foam and magnetism of composites together, to establish a novel solar-thermal energy storage method. The morphology and the thermal characteristics of biomimetic phase change composites have been characterized. The results showed that the maximum storage efciency of the biomimetic phase change materials increased by 56.3% compared to that of the based materials, and it can further be improved by the application of magnetic feld. Meanwhile the heat transfer process of solarthermal conversion and energy storage in biomimetic porous structure under the external physical felds has been explained by simulation. Thus, the magnetic feld-induced method applied in this research has better solar-thermal energy storage characteristics within a porous structure by dynamically controlling the magnetism, which has potential uses for various sustainable applications, including waste-heat recovery, energy conservation in building, and solar-thermal energy storage. 

Keywords Bionic porous structure · Solar-thermal conversion · Thermal energy storage · Phase change materials · Magnetic nanoparticles

Fig. 2

Schematic and experimental devices of the bio-inspired solar-thermal conversion and storage process

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