Views: 8566 Author: Alice Publish Time: 2020-12-11 Origin: https://www.downtheroadbrewery.com/
How to control beer fermentation temperature with refrigeration unit?
In the brewing of alcoholic beverages, an often overlooked by-product of the fermentation phase is heat. It is important to note that the heat generated by normal beer fermentation can increase the process temperature by 10 to 15 ° C.
Ideally, the brewing process should be kept strictly within a narrow temperature range for best results. If not enough measures are taken to properly regulate the thermal aspects of beer production, this is a costly mistake and many new brewers may result in unsatisfactory products.
How does a brewery control fermentation temperature?
As every brewing enthusiast knows, the key to making a good beer is largely a matter of attention to detail, and in addition to choosing the ideal yeast strain, choosing and maintaining an optimal brewing temperature is crucial to achieving the ideal quality of the beer.
Although the beer fermentation temperature control homemade setting makes it easy to implement simple cooling fans and barrels, the commercial scale of fermented beer requires specialized temperature regulation equipment, and the brewery's refrigerating units are ideal for large-scale production.
Most brewery chillers use a solution of ethylene glycol in the water as a coolant (although other refrigerants are available). These units have the following advantages:
The glycol helps prevent circulation lines from freezing at low temperatures and clogging the refrigeration unit
Glycol has lubricating properties and can be used to keep the cooling pump running smoothly
Glycol retains more heat and helps cool the beer effectively
How does the brewery refrigeration unit work?
The beer cooler consists of a refrigerating unit, interconnect pipes and an automatic temperature regulator. The coolant is cooled in a cooling tank and pumped through a heat exchanger pipe that surrounds the fermentation vessel. Heat from the brewing vessel is transferred to the circulating coolant, which is then pumped back to the refrigerating unit for re-cooling. The overall effect of this heat exchange cycle is to reduce the fermentation temperature in the brewery vessel
How does the brewery's refrigeration unit adjust the fermentation temperature?
Although the use of frozen glycol as a coolant is highly beneficial, it can overcool the brewing process if left unchecked, and a suboptimal temperature can completely shut off the fermentation process or cause incomplete fermentation to occur. To avoid making poor quality beer, the temperature in the fermenter must be kept constant, which can be achieved by an automatic temperature controller.
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