Glycol chillers have been widely accepted as one of the most efficient cooling systems due to the precision control they offer, and the low temperatures the systems can achieve.
A glycol chiller is a chilling system that uses a percentage of glycol mixed with water to create extremely low temperatures far beyond the freezing point of water. Referred to as antifreeze, glycol is an organic compound belonging to the alcohol family. Due to its excellent heat transfer properties, glycol is ideal for cooling and chilling applications. When glycol mixtures are used in chillers they are able to remove large amounts of heat quickly. Glycol chillers use advanced refrigeration technology to provide cooling solutions with maximum energy efficiency.
Heat is a normal byproduct of chemical reactions and has to be removed rapidly in order to maintain the stability of the reaction. In such instances, glycol chillers are used due to their quick reaction and excellent heat transfer properties. In addition to providing excellent heat transfer parameters, glycol tends to discourage algae growth in heat transfer equipment.
Glycol-based coolants consist of either ethylene glycol or propylene glycol. However, due to its toxicity, ethylene glycol is not approved for food processing. Propylene glycol has low toxicity, is biodegradable, and is a food-grade antifreeze. The most common use for glycol chillers is in the production of beverages, where the cooling process has to be at a specific level to ensure the quality of the final product.
Glycol chillers are often used in breweries, distilleries, wineries, cider mills, and dairy products in order to control fermentation, heat removal, cold stabilization, and cold storage of the final product. Chillers are capable of maintaining a consistent temperature, which is ideal for setups like breweries and wineries, in which the temperature of an alcohol product is crucial for its proper fermentation and storage.
Keeping products at a consistently low temperature can be expensive and require regularly scheduled monitoring. The introduction of glycol systems in their varied sizes has made it easier and less expensive to produce high-quality products without the need for continually checking the cooling process.