Enhancing experimentation and modeling of the impact of coffee particle size on the dynamic process of espresso extraction - Vaca Guerra, Mauricio
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Espresso extraction is a complex process governed by interconnected physical phenomena, where coffee particle size plays a critical role. This dissertation systematically investigates how variations in particle size affect the hydrodynamics and mass transfer processes within the packed coffee bed, using controlled experiments and mechanistic modeling. Key findings reveal that particle size distribution infl uences bed compression, permeability, and extraction kinetics of key marker components. A series of mathematical models were developed and validated to describe diffusion-convection…mehr

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Produktbeschreibung
Espresso extraction is a complex process governed by interconnected physical phenomena, where coffee particle size plays a critical role. This dissertation systematically investigates how variations in particle size affect the hydrodynamics and mass transfer processes within the packed coffee bed, using controlled experiments and mechanistic modeling. Key findings reveal that particle size distribution infl uences bed compression, permeability, and extraction kinetics of key marker components. A series of mathematical models were developed and validated to describe diffusion-convection interactions, offering predictive insights for optimizing espresso quality and enabling consistent performance in fully automated coffee machines.