Glychol / Secondary Systems
Glycol Refrigeration Systems (Secondary Refrigeration Systems) can highly enhance performance and reduce energy consumption considerably, in return saving you money on your electrical bills. A glycol system can consist of independantly controlled refrigerated units, cabinets, counters, or coldrooms that are linked together. A chilled glycol solution is then circulated within a closed loop using a pump or pumps depending on size of system. In return this allows the use of a single refrigeration unit/charge to chill the glycol.
Glycol Chillers can come in high, medium and low temperature configurations depending on the application. e.g. a freezer unit will require a low temperature unit and a medium will require a medium temperature application.
Glycol Systems are a refrigeration system that is used to cool a tank of an antifreeze called "propylene glycol", or "glycol" . This cooled liquid is pumped though a looped circuit of tubing connected to the input and output sections of the glycol chiller (Head Splitter). For every cabinet you want cooled, just connect the heat-exchanger(evaporator) with a flow and return line. Once connected, glycol will now circulate through the heat-exchanger and the vessel will be cooled.
Glycol is usually chilled below the freezing point of water, this makes it very effective for cooling/heat transfer.
In this type of application alternate/power saving refrigerants (hydrocarbons) can be used safely and will also help lower your power consumption.