Lämönsiirtoliuos

Lämönsiirtoliuos, often translated as heat transfer fluid or thermal fluid, is a substance used to transport thermal energy from one location to another. These fluids are crucial in a wide range of applications, from industrial processes and heating systems to solar thermal collectors and refrigeration cycles. The primary function of a lämönsiirtoliuos is to absorb heat at a source and release it at a destination, thereby facilitating temperature regulation and energy management.

The choice of lämönsiirtoliuos depends heavily on the specific operating conditions and requirements of the system. Common types include water, glycols (such as ethylene glycol and propylene glycol), mineral oils, synthetic oils, and molten salts. Water is widely used due to its excellent heat transfer properties, low cost, and environmental friendliness, but its use is limited by its freezing point and boiling point. Glycols are often mixed with water to lower the freezing point and raise the boiling point, making them suitable for systems operating at sub-zero temperatures or elevated pressures.

Industrial applications frequently employ mineral or synthetic oils for high-temperature processes where water or glycols would vaporize or degrade. Molten salts are used in concentrated solar power plants and some industrial furnaces due to their ability to store and transport large amounts of thermal energy at very high temperatures. The properties of a lämönsiirtoliuos, such as its specific heat capacity, thermal conductivity, viscosity, and thermal stability, are critical for efficient and safe operation of the system. Corrosion inhibitors are often added to prevent damage to system components.