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. Some applications also require the coolant to be an electrical insulator.

In the industrial or industry context, a "coolant" is a substance used to remove heat from a system or process. Here are some examples of coolants used in industry:

  1. Water: Water is a commonly used coolant in many industrial processes, such as power generation, manufacturing, and electronics. It is readily available and inexpensive, but may not be suitable for high-temperature applications.

  2. Refrigerants: Refrigerants are coolants used in refrigeration and air conditioning systems. They absorb heat from the environment and release it outside the system. Examples include R-22, R-134a, and R-410A.

  3. Oil: Oil is used as a coolant in many industrial applications, such as machining and metalworking. It is a good thermal conductor and can withstand high temperatures, but can be expensive and require careful disposal.

  4. Coolant mixtures: Coolant mixtures are often used in automotive and other engine applications to prevent overheating and freezing. They typically consist of a mixture of water, antifreeze, and other additives.

Here are some similar things to coolant in the industrial context:

  1. Heat transfer fluids: Heat transfer fluids are substances used to transfer heat from one location to another, often in industrial processes such as oil and gas, chemical processing, and food and beverage production. Examples include thermal oils, glycols, and brines.

  2. Lubricants: Lubricants are substances used to reduce friction and heat in moving parts in industrial machinery. They are commonly used in automotive, aerospace, and manufacturing applications.

  3. Insulating materials: Insulating materials are used to prevent the transfer of heat between two materials or systems. They are commonly used in building construction, industrial equipment, and electronics.

  4. Thermal barriers: Thermal barriers are used to protect equipment and structures from high temperatures. They are often made of materials such as refractory ceramics, metal alloys, and thermal coatings.

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