Effect of Nanoparticles on Performance Characteristics of Refrigeration Cycle

Abstract

Since few years, researchers are introduced nanorefrigerant in the recent development of refrigeration systems. This chapter briefly summarizes the behavior of different nanoparticles in vapor compression refrigeration cycle. The nanoparticles' infusion in refrigeration cycle affects the viscous behavior of the refrigerant. It is found that very limited studies have been done on viscosity characteristics of nanolubricants, but few reports states that viscosity increases with nanoparticles additive which improves the tribology of compressor. But inversely, the increment of viscosity promotes to the possible pressure drop in the system which eventually drops the cycle performance. The optimum contribution of nanorefrigerant with high thermal conductivity and low viscosity is the success key of system performance with nanoparticles. However, it is found that the contribution of nanoparticles on the basis of physical phenomena that are affecting the vapor compression cycle is limited in the literature. This chapter aims to make a review on the mechanism of improving vapor compression cycle by using nanorefrigerants.

Evaluation and Analysis of an Agro-Based Nano Refrigerant to Improve the Performance of a Domestic Refrigeration System

“…In comparison to other nanoparticles, carbon nanotubes are the best candidate for heat transfer enhancement of base refrigerants. The rate of heat transfer increases as the nanoparticle dimension reduces, while the pressure drop lowers as the nanoparticle dimension decreases [9].…”

The effect of nano-Lubricant TiO2 in cooling system R134a on vapour compression cooling system

“…The results also demonstrated a decrease in the viscosity of the lubricant when performing the viscosity test, which leads to a decrease in power consumption. A PH test was performed and it was found that an optimized compressor for cooling purposes was required [11]. The attempt to improve the performance of the compressive cooling system for the characteristics of heat transfer by adding ( AL2O3, R-134a, size 20 nanometers ) nano-cooling system was studied.…”

Investigation of SiO2 Nanoparticle Retention in Flow Channels, Its Remediation Using Surfactants and Relevance of Artificial Intelligence in the Future

“…The use of nanofluids as nano-refrigerants has the potential to lead to smaller, more compact refrigeration systems which would require less compressor capacity, use less fuel, be more energy efficient and hence, more eco-friendly [18]. Silica NPs also have the potential to increase the solubility between the lubricant and the refrigerant, which would reduce wear and tear and increase the compressor life [19][20][21]. Hence, silica NPs, in this regard, have been found to display exceptional properties and have been touted for future use in refrigeration systems [22,23].…”