Investigation on Effect of Nanoparticles Sedimentation on Thermal Conductivity of SiO2 Nanofluids
Publish place: 07th International Congress on Chemical Engineering
Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICHEC07_044
تاریخ نمایه سازی: 25 فروردین 1394
Abstract:
Nanofluid is defined as conventional fluid with suspended particles at nanometer size (normally below 100 nm) in it. These fluids possess great potential for heat transfer enhancement. Some of the main issues related to nanofluids and their preparation are stability, particle sedimentation and clustering. In this study effect of parameters such as base fluid, particle size and concentration on nanofluid stability and effect of particle sedimentation through time from nanofluid preparation on its thermal conductivity have been investigated. For example the amount of thermal conductivityof sample with 3% valume fraction SiO2 in the base fluid with initial value 0/415 w/m.k is decrese to 0/365 w/m.k. Also results showed that nanofluid thermal conductivity reduction caused by particle sedimentation decrease with increase in particle size and concentration
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Authors
mohsen mansouri
Department of Energy, Material and Energy Research Center (MERC)Meshkindasht, Karaj, Iran
Amirhosein Zamzamian
Department of Energy, Material and Energy Research Center (MERC)Meshkindasht, Karaj, Iran
Arya Shafiefarhood
Department of Energy, Material and Energy Research Center (MERC)Meshkindasht, Karaj, Iran
Omid Tavakoli
Department of Energy, Material and Energy Research Center (MERC)Meshkindasht, Karaj, Iran
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