Heat Storage and Release Characteristics of Carbon Nanotube Dispersed Latent Heat Storage Material

Abstract

It is desired to improve the storage/release rate to shorten the heat exchange time in the latent heat storage system. This study is aimed at latent heat storage materials including the carbon nanotube (CNT) dispersoid with high thermal conductivity. Carbon nanotubes (CNTs) can be expected to increase the apparent thermal conductivity when dispersed in latent heat storage materials. In addition, since it is a dispersed system, it does not interfere with convection during heat storage in the melt. As the CNT dispersed latent heat storage material, tetracosane (melting point 50.6°C) was used as a continuous phase, and a sample containing multi-walled CNT in the range of 0.25 to 1.00 mass% was used. This paper deals with the evaluation results of temperature rising melting and temperature falling solidification characteristics using a differential scanning calorimeter (DSC).