Coolant vs. Refrigerant

Coolantnoun

A medium, usually fluid, used to draw heat from an object.

‘Coolant is used in car engines and industrial processes, where excess heat could cause machine damage.’;

Refrigerantnoun

A substance used in a heat cycle that undergoes a phase change between gas and liquid to allow the cooling, as in refrigerators, air conditioners, etc.

Coolantnoun

a fluid (gas or liquid) used to cool a device by transferring heat away from one part to another.

Refrigerantnoun

That which makes cool or cold, such as a medicine for allaying the symptoms of fever.

Coolantnoun

a fluid agent (gas or liquid) that produces cooling; especially one used to cool a system by transfering heat away from one part to another;

‘he added more coolant to the car's radiator’; ‘the atomic reactor used a gas coolant’; ‘lathe operators use an emulsion of oil and water as a coolant for the cutting tool’;

Refrigerantadjective

(obsolete) That cools or freezes; providing relief from heat or fever.

Coolant

A coolant is a substance, typically liquid or gas, that is used to reduce or regulate the temperature of a system. An ideal coolant has high thermal capacity, low viscosity, is low-cost, non-toxic, chemically inert and neither causes nor promotes corrosion of the cooling system.

Refrigerantadjective

Cooling; allaying heat or fever.

Refrigerantnoun

That which makes to be cool or cold; specifically, a medicine or an application for allaying fever, or the symptoms of fever; - used also figuratively.

Refrigerantnoun

a substance used to provide cooling (as in a refrigerator)

Refrigerantadjective

causing cooling or freezing;

‘a refrigerant substance such as ice or solid carbon dioxide’;

Refrigerant

A refrigerant is a working fluid used in the refrigeration cycle of air conditioning systems and heat pumps where in most cases they undergo a repeated phase transition from a liquid to a gas and back again. Refrigerants are heavily regulated due to their toxicity, flammability and the contribution of CFC and HCFC refrigerants to ozone depletion and that of HFC refrigerants to climate change.