2.1. Solar assisted mashing process for the brewery Goess
The solar thermal system designed for the brewery Goess, Austria was commissioned in June 2013 and implies
several innovative approaches: Two steam supplied vessels (mash tuns) were retrofitted by especially designed
internal plate heat exchanger templates which enable a supply system based on hot water instead of steam. The new
hot water supply is fed by waste heat from a nearby biomass CHP plant as well as by a large scale ground mounted
solar thermal system (100 collectors summing up to a total of 1,500 m² gross collector area) which is hydraulically
connected to a 200 m³ pressurized solar energy storage tank. Fig. 2 next schematically shows the hydraulic
integration of the new hot water supply system to the retrofitted mash tuns.