Jäähdytysfluidi

Jäähdytysfluidi, or coolant, is a liquid or gas used to transfer heat away from an object or system. In internal combustion engines, it circulates through the engine block and cylinder head, absorbing heat generated by combustion. This heat is then dissipated to the atmosphere, typically through a radiator.

The most common type of coolant used in vehicles is a mixture of water and ethylene glycol or propylene glycol. Glycols are added to water to lower its freezing point and raise its boiling point, preventing the coolant from freezing in cold temperatures and boiling over in hot conditions. These glycols also contain additives that inhibit corrosion and prevent cavitation within the cooling system.

Other types of cooling fluids exist for various applications. In industrial processes, water, oils, or specialized synthetic fluids may be used depending on the operating temperature and the materials involved. Air can also act as a coolant, as seen in air-cooled engines or the cooling fins on electronic components.

The performance of a cooling fluid is often measured by its heat capacity, thermal conductivity, and viscosity. A good coolant should be able to absorb and transfer heat efficiently with minimal energy loss. Regular maintenance and replacement of coolant are crucial to ensure the proper functioning and longevity of the system it serves. Contaminated or depleted coolant can lead to overheating, corrosion, and component damage.