A chiller works by compressing refrigerant gas and condensing it into a liquid, which then triggers the metering device to decrease pressure. Once the pressure drops, the liquid evaporates and pulls heat out of the water.Know More
The functioning of a chiller depends on the type of chiller. The vapor compressor has four different components: compressor, condenser, metering device and evaporator. Once the warmed refrigerant liquid pulls heat from the water, it evaporates back into warm gas that then goes through the entire process all over again.
Another type of chiller is the absorption chiller, which substitutes the compressor with heat. This process starts when water and an absorbent combine. The mixture is put under pressure and heats. The water evaporates, becomes water vapor and condenses. The resulting super-pressurized liquid flows through an evaporator where it turns into a gas. While evaporating, it pulls heat from the water. The gas returns to repeat the cycle and recombines with the absorbent.
Both types of chillers contain liquid refrigerant, a necessity in the cooling process, an evaporator and a condenser. Cooling towers are sometimes used in large chillers. These devices help the chillers to release the heat that builds up in the system.Learn more about Refrigerators & Freezers
The condenser on a refrigerator removes heat from a gas coolant and condenses it into high-pressure liquid. Coolant evaporates at low temperatures and low pressure but condenses at high temperature and high pressure; because of this, heat can be transferred from inside the refrigerator to the room. The coolant is contained in a closed system, so the process can be repeated.Full Answer >
An air-cooled chiller is a refrigerating system used to cool or dehumidify air by flowing a refrigerant over an evaporator tube bundle. This process draws vapors out of the evaporator and ultimately allows the pressurized refrigerant to condense on a system of tubes and cool the air. When the refrigerant passes through an expansion device, it lowers its temperature. Air-cooled chillers are used in a number of professional settings.Full Answer >
An absorption chiller works by using a compressor to boil vapor out of a solution of water and lithium bromide. The refrigerant vapor is then compressed to a higher pressure.Full Answer >
Blast chillers rapidly cool food by circulating cold air through the unit until temperatures fall to safe levels. They are designed to lower the temperature of cooked foods quickly enough to minimize bacterial growth, ensuring the food is out of the 40 to 140 degree Fahrenheit danger zone within 90 minutes, rather than the hours it can take when foods are stored in a refrigerator.Full Answer >