Lämpönsiirtonesteen

Lämpönsiirtonesteen, often translated as heat transfer fluid or thermal fluid, is a substance used to transfer thermal energy from one location to another. These fluids are critical components in a wide range of applications, including heating, ventilation, and air conditioning (HVAC) systems, industrial processes, and renewable energy technologies like solar thermal systems. The primary function of a lämpönsiirtonesteen is to absorb heat at a source and release it at a point of use, thereby facilitating temperature regulation or energy conversion.

The selection of a lämpönsiirtonesteen depends heavily on the specific application requirements. Key properties considered include its thermal conductivity, specific heat capacity, viscosity, boiling point, and freezing point. The fluid must be able to efficiently absorb and transport heat without undergoing undesirable physical or chemical changes within the operating temperature range. Common lämpönsiirtonesteen include water, glycol solutions (such as ethylene glycol or propylene glycol), oils, and molten salts. Water is a cost-effective and efficient option for many applications, but its freezing point and tendency to corrode can be limiting. Glycol solutions are often used to lower the freezing point and raise the boiling point of water, making them suitable for colder climates or higher temperature applications. Organic oils are used in high-temperature systems where water or glycols would degrade. Molten salts are employed in specialized high-temperature applications, particularly in concentrated solar power plants.

The performance and longevity of a lämpönsiirtonesteen can be influenced by factors such as impurities, oxidation, and thermal degradation. Proper maintenance, including regular monitoring of fluid properties and system flushing, is essential to ensure optimal heat transfer efficiency and prevent equipment damage.