How Does Chiller System Work
How Does Chiller System Work: Chiller is a device used in cooling systems and is typically used in places such as large buildings, industrial facilities, and supermarkets. Chillers use a coolant to remove hot air from spaces or heat generated in processes. The operating principle of chillers is often similar to that of refrigerators. Here is the basic operating principle of a chiller:
Coolant: A chiller uses a coolant, which can be water or a special chemical mixture. The coolant should be a substance that can evaporate at low temperatures.
Evaporation: In a chiller, the coolant is compressed through a compressor. The compression process increases the pressure and temperature of the coolant. This high pressure and temperature allow the coolant to remain in a gaseous state.
Condensation: The coolant in a gaseous state at high pressure and temperature enters a section called a condenser. The condenser facilitates the condensation of the coolant by releasing heat to the surrounding environment. During this process, the chiller may use a cooling tower or a water-cooled system to remove heat from the surrounding environment.
Expansion: The coolant, now in liquid form due to condensation, is sent to an evaporator by reducing its pressure through an expansion valve or an orifice.
Evaporation and Cooling: The evaporator receives the low-pressure coolant and lowers the temperature of the surroundings through a heat exchanger. The coolant evaporates back into a gas, absorbing heat from the surroundings in the process. Thus, the evaporator cools the water or air flow that needs to be cooled by the chiller.
This cycle is a continuous system in which the chiller operates and maintains the cooling process. Chillers come in different types and capacities and can have various designs depending on their intended use. However, the basic operating principle is based on the steps described above.