Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
ENERGY ANALYSIS OF BEER BREWING UNDER BATCH PROCESS
Submission Author:
Paulo Rodolfo Buffon Ortiz , RS
Co-Authors:
Paulo Smith Schneider
Presenter: Paulo Smith Schneider
doi://10.26678/ABCM.ENCIT2016.CIT2016-0717
Abstract
This paper reports an energy assessment of an actual brewing process. A step by step description of the most relevant stages of the process is presented, performed in a laboratory scale facility. The hot stage of the cooking process is performed on three 304 stainless steel tanks, with an individual capacity of 65 liters, assembled on a vertical metal frame platform. The hot part of the process is driven by electric heaters and the cold one is performed on a domestic refrigerator, dedicated to the fermentation control. A 50 liters batch run required 7 hours and 30 minutes for the hot stage, followed by an additional 14 days for fermentation and maturation. The total energy consumed along the process was estimated to be around 197 MJ, resulting in an average consumption of 3.94 MJ/l. This energy is divided into 96% for electricity, of which 74% corresponds to cold processes and 22% to hot processes, and the remaining energy expenditure concerns the manual processes. Compared to data from literature, for large scale continuous production breweries, results from the present study displayed a much higher value of energy per volume. Although differences were quite big, that was expected for batch based processes.
Keywords
Microbrewery, Small scale brewing process, Malt Drink, Batch process
