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Related Experiment Videos

Optimal temperature control for batch beer fermentation.

D A Gee1, W F Ramirez

  • 1Department of Chemical Engineering, University of Colorado, Boulder, Colorado 80309.

Biotechnology and Bioengineering
|February 20, 1988
PubMed
Summary
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Optimal control theory enhances beer fermentation by maximizing ethanol production and minimizing fermentation time. This study applies advanced control strategies to optimize the batch brewing process for efficiency.

Area of Science:

  • Biochemical Engineering
  • Process Control
  • Fermentation Technology

Background:

  • Batch beer fermentation is a complex bioprocess influenced by various parameters.
  • Optimizing fermentation for both ethanol yield and time is crucial for industrial efficiency.

Purpose of the Study:

  • To apply optimal control theory to batch beer fermentation.
  • To develop a control strategy that maximizes ethanol production while minimizing fermentation duration.

Main Methods:

  • Utilized a modified Engasser et al. model incorporating temperature effects.
  • Implemented optimal control theory with fermentor cooling duty as the control variable.
  • Considered temperature and control variable constraints.

Main Results:

Related Experiment Videos

  • Identified the optimal control law as bang-bang control.
  • Observed a singular arc indicating isothermal operation at maximum temperature constraints.
  • Developed an iterative algorithm for computing switching times.

Conclusions:

  • Optimal control provides an effective strategy for enhancing beer fermentation efficiency.
  • The proposed method balances ethanol yield and process time through precise temperature control.
  • The developed algorithm aids in determining optimal control parameters for industrial application.