Air & Water cooled chillers
Air and water cooled Chillers are refrigeration systems used to cool fluids and are used both in commercial and industrial sectors. Chilled water has a lot of applications ranging from space cooling to process uses. The components of air and water cooled systems are almost similar with each consisting of an evaporator, compressor, condenser, and an expansion valve. The primary difference is whether air or water is used to provide the condenser cooling. An air-cooled chiller has a condenser that is cooled by the environment air. The air-cooled chillers are preferred for small or medium installations but lately the quality improvement in their structure, allows the usage, in modular type, for large installations also. An air-cooled chiller is preferred especially in cases that there is not enough water or the water is very expensive. The water-cooled chillers have water cooled condenser connected with cooling tower and are usually preferred for medium and large installations where there is sufficient water.
Working mechanism for chillers:
The cycle begins in the evaporator where a liquid refrigerant flows over the evaporator tube bundle and evaporates, absorbing heat from the chilled water circulating through the bundle. The refrigerant vapour is drawn out of the evaporator by the compressor. The compressor then “pumps” the refrigerant vapour to the condenser raising its pressure and temperature. The refrigerant condenses on or in the condenser tubes, giving up its heat to the cooling water (or air). The high-pressure liquid refrigerant from the condenser then passes through the expansion device that reduces the refrigerant pressure and temperature as it enters the evaporator. The refrigerant again flows over the chilled water coils absorbing more heat and completing the cycle.
Al Arif representatives are more than happy to work with clients in deciding the best chiller system that is best fit for your needs.