With wort boiling, beer production enters the hot phase. It is a partial process that is of particular importance for the beer quality. The lautered wort is boiled and thereby sterilized. Malt enzymes are inactivated. Hops are added to the wort and the undesirable aromas and flavouring compounds are evaporated.
The JETSTAR™ provides a completely innovative process in atmospheric kettles: 2-phase boiling. This method, with two separate steps, gently and efficiently boils the wort using an internal boiler in natural circulation. In the first phase, the conversion process, the innovative subjet system provides a more homogeneous circulation with minimum thermal stress. In the second phase, the two-level wort spreader ensures intensive evaporation. Intermediate cleaning during wort boiling is not required. JETSTAR™ can be supplied as part of a new installation or easily retrofitted to existing plants.
Dynamic process, optimum stripping
GEA Brewery Systems, Huppmann, has developed the low-pressure boiling system to a level suitable for practical application. We have consistently advanced this technology and developed the dynamic low-pressure boiling system (dyn. LPB); it still provides unmatched quality. The great advantage of dynamic low-pressure boiling is a more efficient evaporation of undesired aromas due to intensive boiling in intervals with stripping phases. When used with JETSTAR™ it provides completely new options for heating-up and thermal conversion and considerably reduces thermal stress.
Energy storage: More efficiency with less fuel
GEA Brewery Systems, Huppmann, has developed its unique energy storage system that allows energy to be recovered from the boiling process and reused in the brewhouse. This is achieved by combining a vapour condenser with an energy storage tank as well as a wort pre-run tank and a wort heater.
The low-pressure energy storage system is used worldwide for producing more than 200 million hectolitres of beer per year. Two factors contribute to its success: the reduced total evaporation rate and more efficient energy recycling in the brewhouse.
Let’s look inside the wort kettle
Let us now deal with the wort kettle. If the plant configuration does not require an external boiler, we would normally propose the JETSTAR™. This is a very important quality component for wort boiling. The new generation of internal boilers guarantees wort circulation with low shear forces owing to natural circulation, minimum temperatures of the interface region on the wort side and pulsation-free wort heating. No pumps or extensive pipework are required so there are no radiation losses, and it is easy to clean.