Review on Enhancement of CoP of Refrigeration System by Inclusion of Nano particles in Refrigerant

Abstract

Nanofluid is the stable suspensions of nano particles in base fluids. Nanofluid exhibits many interesting
properties and can be applied in many applications for enhancing performance and effectiveness. This article discusses
the enhancement of CoP of refrigeration system by inclusion of nano particles in refrigerant. The novel nanorefrigerant
is a nanofluid that shows better heat transfer performance over conventional refrigerants. Low volume concentration of
Nano particles in refrigerant can improve the performance of a refrigeration system in the temperature range from 4C
to 160C. It decreases the energy consumption and improves efficiency of system. It was observed that addition of nano
particles in refrigerant reduced energy consumption up to 26.1% and improved performance by 4.4%. Moreover it is
observed that it increase CoP and 11% reduction in compressor work. However, increased density of nanorefrigerant,
stability of nano particle in refrigerant, lower specific heat and increased pressure drop & pumping powers are the
major challenges associated with inclusion of nano particles in refrigerant. Nano refrigerant can be employed in
industry only after carefully addressing these few barriers and challenges which have been identified in this article