Külmjahutajatel

Külmjahutajatel, more commonly known as chillers, are refrigeration units used to remove heat from a liquid, typically water or a water-glycol mixture. This chilled liquid is then circulated through a heat exchanger to cool air or equipment. Chillers are essential components in a wide range of applications, including air conditioning for buildings, industrial process cooling, and medical equipment.

The fundamental principle behind a chiller is the refrigeration cycle, which involves the evaporation and condensation of a refrigerant. A compressor increases the pressure and temperature of the refrigerant gas. This hot gas then passes through a condenser, where it releases heat to the surrounding environment and turns into a liquid. The liquid refrigerant then flows through an expansion valve, where its pressure and temperature drop significantly. Finally, the cold, low-pressure refrigerant enters an evaporator, where it absorbs heat from the chilled liquid, causing it to evaporate back into a gas, thus completing the cycle.

Chillers come in various types, including air-cooled and water-cooled. Air-cooled chillers dissipate heat directly into the ambient air using fans, while water-cooled chillers use a separate cooling tower to remove heat from the condenser water. The choice between these types depends on factors such as climate, available space, and energy efficiency requirements.

The capacity of a chiller is measured in tons of refrigeration, which is equivalent to the rate of heat removal required to freeze one ton of water in 24 hours. Chillers are critical for maintaining optimal operating temperatures, preventing equipment failure, and ensuring comfort in various environments.