Abstract
Comparative experiments were conducted in order to investigate the effects of the mass flow rate and wall heating flux on the cooling performance of water-based suspensions of microencapsulated phase change material (MEPCM) flowing through rectangular minichannels. MEPCM particles with an average size of 4.97 μm were used to form suspensions with mass concentrations ranging from 0% to 20%. The comparative experiments were performed for varying mass flow rates in the laminar region and varying thermal conditions. It was found out that the mass flow rate and wall heating flux play a significant role in the cooling performance of MEPCM suspensions. It is believed that the decreased thermal conductivity of MEPCM suspensions with the concentration and the different thermally developing flow patterns are mainly responsible for the dependence of the cooling performance of MEPCM suspensions of those parameters.
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