What – A substance used to transfer heat away from an object or system.
Why – Coolants are used in cooling systems to remove excess heat and maintain a stable temperature range.
When – Coolants are used whenever heat-producing equipment is in use.
How – Coolants can be either liquid or gas and come in various types, such as water, ethylene glycol, and refrigerants. The choice of coolant will depend on the specific application and equipment being cooled.