Refrigerant is a substance that create cool because the substance will spread to all relevant parts in the refrigeration system as aforementioned. The ability of convection by evaporation and vice versa into a refrigeration system without losing its function.

Once the refrigerant is at low temperature, the substance need stability and durability to heat and to conversion. It should not contain corrosive that is sensitive to metal of the refrigeration system in order to prevent from deterioration. Lastly, the refrigerant must be non-flammable and non-blast.

Refrigerants circulate in refrigeration system and change its form, temperature, and pressure constantly in order to remove the heat from the specified area that need to replace with the cool.

Refrigerant properties
Refrigerant is a liquid that has the property of cooling by absorbing heat from objects or things that need to cool a good refrigerant. Must have physicochemical properties that are safe to use.

Safety is the first thing to consider. Some refrigerants have good cooling properties. But there is a limit to use A good refrigerant must not be chemically reactive, non-flammable or explosive, and non-toxic. In particular, it must not react with lubricants, compressors, or other system components.
Refrigerant Toxicity It can be said that no gas is as safe for humans as air. The toxicity of the refrigerant depends on the amount and duration of the refrigerant mixed with air.
Flammability and explosion of refrigerants Refrigerants containing hydrocarbon compounds are rapidly flammable and explosive. Therefore, the use of this type of substance Therefore, there must be experts to control all the time.
Savings and other features of the refrigerant The refrigerant has to be able to absorb heat well and require minimal compressor compression. This will increase the efficiency of the system.