Thermal performance of microheat sink with nano-encapsulated PCM slurry

In order to deal with ever-growing demand for smaller high performance cooling devices, laminar steadyliquid flow in microchannels is analyzed. In this study, the influence of using nano-encapsulated phase change materialslurry (NEPCM-slurry) with core (octadecan) and shell (polymethylmethacrylat) of NEPCM in a rectangularmicrochannel heat sink has been investigated three-dimensionally. NEPCM-slurry in different volume fractions hasbeen used. The physical properties of NEPCM and its base fluid have been intended as the temperature dependence.The results show that PCM nano-encapculation with 20% of volume fraction improves PCM thermal conductivityaround 41.4%. In addition, by comparing NEPCM-slurry with water, it can be seen that for the same heat sinktemperature, the NEPCM-slurry requires lower inlet velocity. As for thermal performance, it is better to use NEPCMslurryto enhance microchannel cooling efficiency.

کلیدواژه ها:

NEPCM-slurry ، Microheat sink ، Thermal conductivity ، Heat flux