A Review on Performance of Refrigeration System using Nanofluids

Recently scientists used nanoparticles in refrigeration systems because of theirs remarkable improvement in thermo-physical and heat transfer capabilities to enhance the efficiency and reliability of refrigeration and air conditioning system. Heat transfer performance of different nanorefrigerants with varying concentrations was reviewed and review results are presented as well. Pressure drop and pumping power of a refrigeration system with nanorefrigerants were obtained from different sources and reported in this review. Based on results available in the literatures, it has been found that nanorefrigerants have a much higher and strongly temperature-dependent thermal conductivity at very low particle concentrations than conventional refrigerant. This can be considered as one of the key parameters for enhanced performance for refrigeration and air conditioning systems. Because of its superior thermal performances, latest up to date literatures on this property has been summarized and presented in this paper as well.