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High-presssure shift freezing. Part 2. Modeling of freezing times for a finite cylindrical model
1Instituto del Frío (CSIC), Ciudad Universitaria, 28040 Madrid, Spain. psanz@if.csic.es
Biotechnology Progress
|December 2, 2000
Abstract:
A comprehensive vision of the heat transfer process involved in high-pressure shift freezing (HPSF) is shown in comparison to the process at atmospheric pressure. In addition, a mathematical model to predict the freezing times is presented. This model takes into consideration the dependence of the thermophysical properties relating to temperature and pressure and the supercooling reached by liquid water at atmospheric pressure after adiabatic expansion in the HPSF process. Experimental and theoretical data appear to agree.