Numerical Parametric Study of Heat Sink Filled with Multiple Phase Change Materials

This present study proposed a study of a multiple-phase change materials-based heat sink. The model was composed of four PCM cavities separated by a 2 mm plate fin. Two heat values were adopted to define the effect of the heat flux over the performances of the single PCM-based heat sink and multiple PCM-based heat sink. Three PCMs: RT44, RT64, and Salt hydrate were tested. First, the performances of the three single PCMs were performed. Then, three pairs of PCMs are studied; Salt hydrate-RT44, Salt hydrate-RT64, and RT44-RT64. The results demonstrated that the low melting temperature PCMs, RT44, and Salt hydrate, showed an efficient performance at the heating phase, benefiting from the early melting of the PCMs. The RT64 revealed a rapid temperature drop at the discharge phase. Consequently, the combination of the salt hydrate with RT44 and RT64 improves the performances of the heat sink at the charge and discharge phases.