Lämönsiirtoneste

Lämönsiirtoneste, often translated as heat transfer fluid or coolant, is a substance used to transport thermal energy from one location to another. Its primary function is to absorb heat from a source and release it at a desired destination. These fluids are essential in a wide range of applications, including industrial processes, heating and cooling systems, and automotive engines.

The properties of a heat transfer fluid are critical to its effectiveness. Key characteristics include a high specific heat capacity, which allows it to absorb and store a significant amount of heat, and good thermal conductivity, enabling efficient heat transfer. Low viscosity is also desirable for ease of pumping and flow, while a wide operating temperature range ensures functionality in various conditions. Additionally, stability, non-toxicity, and resistance to corrosion are important considerations for longevity and safety.

Common types of heat transfer fluids include water, glycols (such as ethylene glycol and propylene glycol), oils, and molten salts. Water is a widely used and cost-effective option, though its freezing point and boiling point can limit its application in extreme temperatures. Glycols are often added to water to lower its freezing point and raise its boiling point, making them suitable for colder climates or higher temperature applications. Various types of oils are employed in systems requiring higher operating temperatures or where water is not suitable. Molten salts are used in specialized high-temperature applications. The selection of the appropriate heat transfer fluid depends heavily on the specific requirements and operating parameters of the system.