Old technology, new applications
The brewing process requires a significant amount of heating and cooling at different stages. Many breweries use relatively simple heat recovery processes to capture waste heat from boiling, wort cooling, and other processes but these methods are reaching a point where recovery of heat is uneconomic or impractical to reuse.
Absorption cooling is a very old technology used in refrigerators where electricity was unreliable, costly, or unavailable. They are powered by heat from the combustion of fuel. Waste heat available from a brewery process provides an opportunity to "power" an absorption cooling system.