Li, RunfengZhou, YangDuan, Xili2018-11-082018-11-08May-18978-1-77355-023-7http://hdl.handle.net/10315/35340http://dx.doi.org/10.25071/10315/35340Paper presented at 2018 Canadian Society of Mechanical Engineers International Congress, 27-30 May 2018.Nanoparticle-enhanced tailing-paraffin composite phase change material (NCPCM) is fabricated by spontaneous melt infiltration. Industrial waste-iron tailing is used as raw material to prepare ceramic porous carrier with a foam-gel casting method. By adjusting the fabrication parameters, optimal NCPCM properties are obtained with paraffin content of 70%~88% and thermal conductivity of 0.351~0.490 W/(m·K), which is nearly 200% the thermal conductivity of paraffin wax. After 25 melting/solidification cycles, the nanoparticles remain well dispersion with overall stability in the composite phase change material, and the thermal conductivity slightly decreased from 0.349 to 0.317 W/ m·K. With multiple melting and solidification cycles, a low weight loss of 2.3~7.8 wt.% is demonstrated. The strength of ceramic frame is found to have a direct effect on the weight loss. Compared with exisiting nanoparticle-enhanced phase change material, the new NCPCM shows significantly improved thermal conductivity and better nanoparticle stability due to its ability to prevent nanoparticles from disposition.enThe copyright for the paper content remains with the authorHeat TransferNanoparticlePhase change materialsCeramic porous mediaThermophysical propertiesDispersionArticle