nanofluid challenge & its applications supervisor : dr.sarreshtedari presented by matin ghadiri...
TRANSCRIPT
Nanofluid Challenge & its applications
Supervisor : Dr.Sarreshtedari
Presented by Matin Ghadiri
December 2013 – Shahrood university of technology
In the name of my lovelyGod
1.Introduction• Nanofluids are a relatively new class of fluids which consist of a base fluid
with nano-sized particles (1–100 nm) suspended within them
• Nanofluids possess the following advantages : High dispersion stability Reduced pumping power Reduced particle clogging Adjustable properties
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Introduction Challenge Application
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Introduction Challenge Application
2.Challenges of nanofluids
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Introduction Challenge ApplicationChallenge
• Long term stability of nanoparticles dispersion1. Surfactant or activator adding2. pH control (surface chemical effect)3. Ultrasonic vibration
2.Challenges of nanofluids
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Introduction Challenge ApplicationChallenge
• Increased pressure drop and pumping power
2.Challenges of nanofluids
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Introduction Challenge ApplicationChallenge
• Nanofluids thermal performance in turbulent flow and fully developed region
• Higher viscosity
• Lower specific heat
• Thermal conductivity
• High cost of nanofluids
2.Application
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Introduction Challenge ApplicationChallenge
a) Cooling of electronics
Application
2.Application
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Introduction Challenge ApplicationChallenge
b) Biomedical applications (e.g. Drug delivery)
Application
References :
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• A review of nanofluid stability properties and characterization in stationary conditions by A. Ghadimi. International Journal of Heat and Mass Transfer 2011
• A review on applications and challenges of nanofluids by R.Saidur. Renewable and Sustainable Energy Reviews 2011
• A review on how the researchers prepare their nanofluids by Zoubida Haddad. International Journal of Thermal Sciences 2014
• A review on Nanofluids: Preparation, Stability Mechanisms and Applications by Wei Yu . Journal of Nanomaterials 2012
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Speacial thanks to your attention
Matin GhadiriFall 2013
Shahrood university of technology