How does an industrial Chiller Work?
BRS are specialist suppliers and installers of both York and Daikin chillers, but just how does an industrial chiller work?
Well, in most process cooling systems, a cool water or a water/glycol solution is circulated from the chiller to the process. The cool fluid being pumped through the system removes heat from the process and the warm fluid returns to the chiller. The process water being circulated is the means by which heat transfers from the process to the chiller.
Process chillers contain a refrigerant, of which there are many types and variations of applications depending on the target temperatures required – however, they all basically work on the same principle of compression and phase-change of the refrigerant from a liquid to a gas and back to a liquid. The process of heating and cooling the refrigerant and changing it from a gas to a liquid and back again is most commonly termed the refrigeration cycle.
The Refrigeration Cycle
The actual refrigeration cycle itself begins life with a low-pressure liquid or gas mix. This takes place in the evaporator, where heat from the process water or water/glycol solution boils the refrigerant, which changes it from a low-pressure liquid to a low-pressure gas. The low-pressure gas enters a compressor where it is compressed to high-pressure gas. The high-pressure gas enters the condenser where ambient air or condenser water removes heat to cool it to a high-pressure liquid. The residual high-pressure liquid circulates to the expansion valve, which controls how much liquid refrigerant enters the evaporator. Once complete, the refrigeration cycle starts again!
Types of Chillers
There are two types of condensers used in industrial chillers; either air-cooled or water-cooled. In a water-cooled condenser, water from a cooling tower cools and condenses the refrigerant. Alternatively, an air-cooled condenser uses ambient air to cool and condense the hot refrigerant gas back down to a liquid. It can either be located inside the chiller or it can be remotely positioned on the outside, but ultimately it expels the heat from the chiller to the air. For more information and advice on our York Commercial Chillers and Daikin Chillers, feel free to give us a call and speak to one of our experienced team. Alternatively, to enquire about ordering a York chiller online or for York Chiller spare parts, simple complete an online form and one of our team will be in touch.