**Table 1.**

*Properties of refrigerants [21, 71].*

*Impact of Working Fluids and Performance of Isobutane in the Refrigeration System DOI: http://dx.doi.org/10.5772/intechopen.99121*


The halogen-free refrigerant is applicable in a closed system with relatively less mass charge. It attains a high level of recognition in the '90s and is used in significant engineering systems such as water dispensers, deep freezers, air-ventilation machines, domestic refrigerators, and industrial refrigeration systems [62, 63].

The refrigerants are classified based on their chemical composition and safety [64]. Refrigerant properties are shown in **Table 1**.
