Chillers are spe­cial devices in the range of cli­mate equip­ment. The name of these machines comes from the Eng­lish word chillmean­ing “cold, cool”, and from it you can imme­di­ate­ly guess about their pur­pose.

Chillers are spe­cial refrig­er­a­tion units often used in indus­try, in var­i­ous indus­tries and wher­ev­er there are pow­er­ful cli­mate sys­tems that need cool­ing. The chiller is respon­si­ble for this, tak­ing heat from any liq­uid — water, gly­col solu­tion or indus­tri­al brine, after which the cooled liq­uid enters through the pipes to where it is nec­es­sary to low­er the tem­per­a­ture. Chillers that can oper­ate with liq­uid tem­per­a­tures below freez­ing are often used in the food indus­try.

Often, chillers are used togeth­er with fan coil units — the instal­la­tion of such a sys­tem is advis­able, for exam­ple, in a large build­ing that needs to be equipped with an air con­di­tion­ing sys­tem, since the chiller-fan coil con­nec­tion allows large dis­tances between the com­po­nents. One chiller may be enough for sev­er­al rooms. Thus, the cool­ing effi­cien­cy of the build­ing will be quite high at a rel­a­tive­ly low cost.

As with most tem­per­a­ture con­trol devices, the most impor­tant part of the chiller is the com­pres­sor. There are sev­er­al types of chiller com­pres­sors — screw, cen­trifu­gal, scroll.

The range of chillers is quite large. They are dis­tin­guished not only by the type of com­pres­sor, but also by ways of low­er­ing the tem­per­a­ture of the con­denser. It can be cooled by air using axi­al or cen­trifu­gal fans. Remote con­densers are also air-cooled. There are also liq­uid-cooled con­densers.

As a rule, chillers are designed for work­loads of 500 kW and above.

In order to make your choice among the whole vari­ety of chillers, deter­mine what type of device you need, what liq­uid it will work with, what tem­per­a­ture results you expect from it. The instal­la­tion of the chiller must be car­ried out exclu­sive­ly by qual­i­fied per­son­nel.