Simulating beer pasteurization by considering the effect of glass container by using computational fluid dynamics
DOI:
https://doi.org/10.17981/ingecuc.17.1.2021.02Keywords:
pasteurization, beer, free convection, computational fluid dynamics, pasteurization unitsAbstract
Introduction: The simulation of the pasteurization process of bottled beer, considering the beer-CO2-glass system, allows obtaining more real results of the behavior of free convection.
Objective: The objective of the work is to analyze the influence of the consideration of the container, comparing the results of the profiles of speed and temperature and of the pasteurization units in the zones of initial heating, pasteurization and final cooling, without and with the consideration of transfer heat through the glass.
Method: Computational fluid dynamics is used with COMSOL Multiphisics V 5.1 software.
Results: Different behaviors are obtained in the speed and temperature profiles of the beer, due to the reduction of the effective exchange time between the beer and the water, because the glass must reach thermal stability, causing increases in the driving force and reduction of the temperature retention time that guarantees microbial lethality.
Conclusions: The values of the pasteurization units at the outlet are higher than recommended, compromising the organoleptic quality of the beer.
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