Thermal Performance of Nano Refrigerants: A Short Review


Daniel R.E. Ewim†,*, Adeola S. Shote‡, Ekene J. Onyiriuka‡†, Saheed A Adio‡‡, Suvanjan Bhattacharyya‡†‡, Amr Kaood‡‡‡


†Department of Mechanical Engineering, Durban University of Technology, South Africa
‡Energy Research Group, Department of Mechanical Engineering, Olabisi Onabanjo University, Ago-Iwoye, Nigeria
‡†School of Mechanical Engineering, University of Leeds, Leeds, United Kingdom
‡‡Department of Mechanical Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria
‡†‡Department of Mechanical Engineering, Birla Institute of Technology and Science Pilani, Pilani – 333031, Rajasthan, India
‡‡‡Department of Mechanical Engineering, Faculty of Engineering, Fayoum University, Egypt

Corresponding Author Email: daniele@dut.ac.za

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

The efforts to promote energy-efficient and environmentally friendly nano-based refrigerants are now being favoured. To this effect, in this paper, the new trend, prospects, and investigations of nano-based refrigerants in refrigeration systems are reviewed. It was found that various thermal characteristics have been reported as favourable regarding nano refrigerants. These include a reduction in the power consumption, increase in the coefficient of performance (COPr), improved tribological pressure drop property of nano-lubricant, and increase in the thermal conductivity of the hybrid-refrigerant. The discussions here thus suggest that nano-particles are highly favoured to be included in a typical refrigeration system.