M-49: Old-fashioned processing integrated in a brand new brewhouse

J. PREISS (1), M. Lindner (1); (1) Kaspar Schulz, Bamberg, Germany


A directly heated mash and wort kettle with a bottom made of copper, a copper coolship and baudelot cooler, and turbid mashing technology—no, you’re not reading a historical description of an old brewery, last year these components were requested at Kaspar-Schulz, Bamberg in the course of a brewery project in Oxford, CT. Mr. Neidhart, owner of B. United International, Inc. wanted to start a new brewery based on very traditional craftsmanship components and processes. Kaspar-Schulz, a 337 year old supplier of the brewing industry, accepted the challenge and started to engineer according to the customer’s ideas. At first the team had to collect information on these old technologies. The Kaspar-Schulz archive was combed through. Ink drawings that were 100 years old were restored and reproduced in a 3D CAD system. After that, old breweries in the south of Germany were visited to get a better impression of these old components—how they were produced, installed, and integrated into the whole brewing process. Furthermore, experienced experts in historical brewing equipment were consulted. Besides the research regarding the configuration of the equipment, the realization according to state-of-the-art manufacturing technology and hygienic design demanded several hours of brainstorming, discussions, and test trials. Many of the old manufacturing technologies do not really match modern beer production, just mentioning copper brazing or rivet connections. Also the choice of materials, especially regarding the combustion chamber, was not easy. Many traditional materials are forbidden today or no longer available on the market. To solve this problem the construction team drew inspiration from other industrial combustion processes—for example, crematories or porcelain companies. The results of this project are impressive. Welding connections between copper and stainless steel, a coolship without any non-hygienic fixtures such as rivets, and a baudelot cooler completely welded and made of copper are just a few examples of the technical expertise and achievements generated in this project. After one year of engineering, tests, manufacturing, installation, and commissioning the brewery became operational in March 2014. This work will present the proceedings of this great project, as well as some impressions of the test trials, commissioning, and first month of production.

Johannes Preiss’s career in brewing began in Weihenstephan, Germany, where he studied at the Technische Universität München. Johannes graduated with a degree in brewing and beverage technology. He started working in 2008 at Krones AG, Germany, as a project manager in the Department of Research & Development. The main focus of his work lay in brewhouse and cleaning technology, as well as energy optimization. Topics included “Lautering Technology” and “Integration of Solar Heat into Breweries.” As result of his work Johannes published several patents and scientific papers. Since the end of 2012 he has been working as technical director for Kaspar Schulz in Bamberg, Germany. In addition to his profession Johannes is a talented musician. In 2009 he received the cultural award from the City of Nuremberg, Germany.

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