nanofluid challenge & its applications supervisor : dr.sarreshtedari presented by matin ghadiri...

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