摘要
Aluminum nitride nanoparticles （AINs） have been found to be a good additive for enhancing the thermal conductivity of traditional heat exchange fluids. At a volume fraction of 0.1, the thermal conductivity enhancement ratios are 38.71% and 40.2%, respectively, for ethylene glycol and propylene glycol as the base fluids. Temperature does not have much influence on the enhanced thermal conductivity ratios of the nanofluids, though a volume fraction of 5.0% appears to signify a critical concentration for rheology： for 〈5.0vo1% for Newtonian behavior, and for 〉5.0vo1% for obvious shear-shinning behavior, for both ethylene glycol and propylene glycol.
Aluminum nitride nanoparticles （AINs） have been found to be a good additive for enhancing the thermal conductivity of traditional heat exchange fluids. At a volume fraction of 0.1, the thermal conductivity enhancement ratios are 38.71% and 40.2%, respectively, for ethylene glycol and propylene glycol as the base fluids. Temperature does not have much influence on the enhanced thermal conductivity ratios of the nanofluids, though a volume fraction of 5.0% appears to signify a critical concentration for rheology： for 〈5.0vo1% for Newtonian behavior, and for 〉5.0vo1% for obvious shear-shinning behavior, for both ethylene glycol and propylene glycol.
基金
supported by Program for New Century Excellent Talents in University (NECT-10-883)
the National Natural Science Foundation of China (50876058)
the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
