Recycled Aluminum Paraffin Composite for Passive Cooling Application in Buildings.

This paper presents a new composite phase change material made of paraffin and recycled aluminum sawing chips. Aluminum sawing chips were selected as a thermal conductivity enhancer, the volume fraction (~15%) of which, in the paraffin composite material, was minimized by selecting a fraction with shape that minimizes its packing density. Therefore, the particles remained in contact inside the composite, and thus, their sinking in the liquid state was avoided.