A novel method to evaluate dispersion stability of nanofluids
作者： Joohyun Lee , Kisoo Han , Junemo Koo
DOI: 10.1016/J.IJHEATMASSTRANSFER.2013.11.029
关键词:
摘要: Abstract The thermal conductivity of nanofluids is known to be a function the nanoparticle concentration and particle size vary with time due sedimentation aggregation induced by particle–particle interaction. Therefore, it crucial measure nanofluid together temporal variation volume fraction. However, researchers have reported only estimation initial fraction based on mass added base fluids primary size, which could cause deviation between measurements from different research groups. In this study, new method introduced track changes distribution, effects change are scrutinized. Five generated: DI water/Al 2 O 3 , water/SiO water/Ag, EG/Al EG/ZnO. identified monitoring suspension density using hydrometer, distribution analyzed dynamic light scattering (DLS) method. each measured transient hot-wire From analysis data, found affected in distribution.
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