jäähdytystimi

Jäähdytystimi is a Finnish term that translates to "radiator" in English. In a mechanical context, a radiator is a heat exchanger device used to transfer thermal energy from one medium to another. This process is typically achieved by circulating a fluid, often water or a coolant mixture, through a series of tubes or fins. As the fluid flows through the radiator, heat is dissipated to the surrounding environment, usually air.

The most common application of a radiator is in internal combustion engines, where it plays a crucial role in preventing overheating. The engine coolant absorbs heat generated by combustion and then circulates to the radiator. Air passing over the radiator's fins cools the fluid, which then returns to the engine, continuing the cooling cycle. Radiators are also found in other systems requiring efficient heat dissipation, such as in air conditioning units, central heating systems, and electronic components like computers.

The design of a radiator varies depending on its intended use. Automotive radiators often feature a core made of many small tubes and thin fins, maximizing the surface area exposed to airflow. The materials used are typically aluminum or copper due to their excellent thermal conductivity. Regular maintenance, such as flushing and refilling the coolant, is essential for optimal radiator performance and longevity.