Nanoparticle enhanced paraffin and tailing ceramic composite phase change material for thermal energy storage. Issue 9 (29th June 2020)

• Record Type: Journal Article
• Authors: Li, Runfeng; Zhou, Yang; Duan, Xili
• Is Part Of: Sustainable energy & fuels. Volume 4:Issue 9(2020)
• Page Start: 4547
• Page End: 4557
• Publication Date: 2020-06-29
• Subjects: Renewable energy sources -- Periodicals; Fuel cells -- Periodicals; Electric batteries -- Periodicals; Electrochemistry -- Periodicals; 660.297
• DOI: 10.1039/d0se00753f
• Languages: English
• ISSNs: 2398-4902

Abstract

Abstract : A nanoparticle-paraffin-tailing ceramic composite phase change material is developed with good chemical and physical stability and enhanced heat transfer properties. Abstract : This paper presents the research results of a novel nanoparticle-paraffin-tailing ceramic composite phase change material (NCPCM) for latent heat thermal energy storage applications. The NCPCMs are fabricated by spontaneous melt infiltration of paraffin wax and highly conductive nanoparticles ( e.g., nano-graphene) in a porous ceramic framework. The porous ceramic media are made from iron ore tailing (IOT, an industrial waste) with a foam-gel casting method. The micron-sized pores allow the nanoparticles to pass through, with a capillary pressure facilitating fast infiltration during the NCPCM fabrication. The porosity of the ceramic framework can be adjusted for optimal NCPCM properties, including a thermal conductivity of 0.40–0.60 W (m K) −1, approximately twice higher than paraffin wax, and a latent heat up to 121 J g −1 . The new composite material also shows excellent mechanical strength, chemical stability, and durability in terms of thermophysical properties. After multiple melting-solidification cycles, the nanoparticles remain in a stable dispersion in the NCPCM, leading to consistently good thermal properties. Experimental results also confirmed easy handling, minimum weight loss and enhanced heat transfer rate for fast charging/discharging in thermal energy storage systems.