Nanofluid Challenge & its applications

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

2. 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

3. Introduction Challenge Application

4. 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

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

6. 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

7. Introduction Challenge Challenge Application Application 2.Application a) Cooling of electronics

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

9. 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

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