Nanofluid Challenge & its applications In the name of my lovely God Nanofluid Challenge & its applications Supervisor : Dr.Sarreshtedari Presented by Matin Ghadiri December 2013 – Shahrood university of technology

Introduction Challenge Application 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

Introduction Challenge Application

2.Challenges of nanofluids Introduction Challenge Challenge Application 2.Challenges of nanofluids Long term stability of nanoparticles dispersion 1. Surfactant or activator adding 2. pH control (surface chemical effect) 3. Ultrasonic vibration

2.Challenges of nanofluids Introduction Challenge Challenge Application 2.Challenges of nanofluids Increased pressure drop and pumping power

2.Challenges of nanofluids Introduction Challenge Challenge Application 2.Challenges of nanofluids Nanofluids thermal performance in turbulent flow and fully developed region Higher viscosity Lower specific heat Thermal conductivity High cost of nanofluids

2.Application a) Cooling of electronics Introduction Challenge

2.Application b) Biomedical applications (e.g. Drug delivery) Introduction Challenge Challenge Application Application 2.Application b) Biomedical applications (e.g. Drug delivery)

References : 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

Speacial thanks to your attention Matin Ghadiri Fall 2013 Shahrood university of technology