Scientific journal NRU ITMO
Series "Processes and Food Production Equipment"
Registration certificate ЭЛ № ФС 77 – 55245 от 04.09.2013
зарегистрировано в Федеральной службе по надзору в сфере связи, информационных технологий и массовых коммуникаций
ISSN:2310-1164

2013 (published: 02.12.2013)

Number 4(18)

Home > Issue > Regular Regime Theory to Solve the Problems of Unsteady Mass Transfer During the Drying Process

UDC 664

Regular Regime Theory to Solve the Problems of Unsteady Mass Transfer During the Drying Process

Frolov S. V., Kutsakova V. E., Shkotova T. V.

The article proposes the use of the regular regime theory to solve the problems of unsteady mass transfer during the drying process. Until now, only classical solutions for bodies of simple shape have been presented with a number of assumptions. At the same time, most food products are bodies of complex shape. The paper proposes the formulation and solution of quasionedimensionaldifferential equation with the relevant uniqueness conditions. The article shows that at constant speed of drying the equation becomes steady-state and its solution is a parabolic profile of humidity. The paper also gives an estimated ratio to determine the time of the process. The article provides a solution to the equation of unsteady mass transfer during the period of falling drying speed. The limiting step of the process is the diffusion of moisture within a solid body. We also have an equation to calculate the time of the process.
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Keywords: regular regime theory, solution of problems of unsteady mass transfer, during

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