Investigation of Thermal Conductivity of NaHCO3 Modified Activated Carbon Nanofluids

Abstract

Recent research has focused on enhancing the effectiveness of activated carbon by modifying their specific properties in order to enable the carbon to develop stable nanofluid. Commercial carbons were modified by wetness modification with aqueous solutions of NaHCO₃, followed by sonications at low temperature. The materials were characterized using XRD, SEM, EDX, size distribution, UV dispersion and thermal conductivity test. Their performance for thermal conductivity was evaluated at room temperature. the thermal conductivity of nanofluid is enhanced up to 12 % at 5 wt. % of activated carbon. The results indicate that activated carbons modified with NaHCO₃ solution and sonication treatment can be used for the nanofluid.