Heat Transfer Rate Optimisation of Ionanofluid Based Heat Sink Using ANSYS

Authors

  • Balaji Bakthavatchalam Department of Mechanical Engineering, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia
  • Khairul Habib Department of Mechanical Engineering, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia
  • O. A. Hussein Department of Mechanical Engineering, College of Engineering, Tikrit University, Tikrit, Iraq
  • R. Saidur Research Centre for Nano-materials and Energy Technology (RCNMET), School of Science and Technology, Sunway University, Malaysia
  • Kashif Irshad Center of Research Excellence in Renewable Energy, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia

DOI:

https://doi.org/10.15282/ijame.17.4.2020.09.0629

Keywords:

Heat sink; Ionanofluid; ANSYS; Cooling; Thermal resistance

Abstract

Heat dissipation of various electrical and electronic devices has been a significant concern in the current years of modernisation. Many researchers proved that a liquid-cooled microchannel heat sink (MCHS) is an effective way of removing high heat load. Due to ionic liquids’ unique properties such as negligible volatility, non-flammability, high thermal stability, and ionic conductivity, this liquid is combined with nanofluids to synthesise a new class of potential fluids termed Ionanofluids (ionic liquid-based nanofluids). In this research, a numerical simulation of fluid flow and heat transfer characteristics of MWCNT (Multiwalled Carbon Nanotubes) based Ionanofluids as a coolant in a rectangular-shaped microchannel heat sink is analysed. The Two-step method is used for preparing the studied Ionanofluids consisting of 0.5 wt.% of MWCNT nanoparticles ultra-sonicated with a mixture of propylene glycol and 1-Butyl-3-methylimidazolium chloride ([Bmim][Cl]-ionic liquid) fluids. Copper micro channelled heat sink comprising 1 m channel height, 25 μm of channel diameter, and 0.7 m channel width is modelled and simulated with ANSYS-Fluent. The results showed that the heat transfer coefficient increases about 11.4% while the thermal resistance decreases about 15.18% by using the proposed ionanofluids with the concentration of 0.5 wt.% at Re=2000 compared with that of an MCHS with propylene glycol. Moreover, the pressure drop along the studied MCHS increased up to a maximum of 30 kPa for higher heat gradients. Ionanofluids decreased the thermal resistance and temperature difference between the heated surface of the MCHS and Ionanofluids inlet to a greater extent when validated with pure base fluid and previous studies. From the simulated results, a better cooling performance is observed with Ionanofluids compared to pure propylene glycol (PG) for the proposed microchannel heat sink.

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Published

2020-12-29

How to Cite

Bakthavatchalam, B., Habib, K., Hussein, O. A., Saidur, R., & Irshad, K. (2020). Heat Transfer Rate Optimisation of Ionanofluid Based Heat Sink Using ANSYS. International Journal of Automotive and Mechanical Engineering, 17(4), 8326 –. https://doi.org/10.15282/ijame.17.4.2020.09.0629