Abstract
A numerical model for laminar forced-convection heat transfer of microencapsulated phase-change material (PCM) suspensions in a circular tube with external convection boundary condition is presented in this paper. Melting in the microcapsule was solved by using a temperature-transforming model and convection of the suspension was solved using a finite difference method. The results showed that heat transfer of PCM suspensions is controlled by the external convective conditions, as well as the latent heat of PCM and concentration. This research extends the capability of effectively evaluating the performance of engineering heat transfer devices based on PCM.
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