TY - JOUR
T1 - Numerical simulation of contact vacuum drying of potato slices
AU - Torres, Sadoth Sandoval
AU - Bautista, Emilio Hernández
AU - Patiño, Mayra A.García
AU - Ramírez, Juan Rodríguez
AU - Lagunas, Lilia L.Méndez
AU - Barriada-Bernal, L. Gerardo
AU - Lamine, Hassini
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/8/1
Y1 - 2022/8/1
N2 - In this work, a mathematical model is proposed to simulate the Contact Vacuum Drying of potato slices. Three temperatures were analyzed: 55, 65, and 75 °C with three levels of vacuum pressure: 60, 40, and 20 mmHg. In the macroscopic model, the boundary condition for the moisture conservation is written in terms of water vapor pressure, and it considers the dynamics of the vapor pressure in the chamber. The simulations predict the evolution of gas pressure and the drying kinetics. As drying occurs, the passive regime is prolonged as a result of a decrease in the moisture content. The maximum drying rate (1.4 E-3 kg. water/kg. dry solid·s) corresponds to the drying condition at 75 °C and 20 mmHg, which is the most intensive drying condition. The comparison between the predicted and experimental values showed acceptable agreement. The simulations correctly represent the drying kinetics and the evolution of the gas pressure in the drying chamber.
AB - In this work, a mathematical model is proposed to simulate the Contact Vacuum Drying of potato slices. Three temperatures were analyzed: 55, 65, and 75 °C with three levels of vacuum pressure: 60, 40, and 20 mmHg. In the macroscopic model, the boundary condition for the moisture conservation is written in terms of water vapor pressure, and it considers the dynamics of the vapor pressure in the chamber. The simulations predict the evolution of gas pressure and the drying kinetics. As drying occurs, the passive regime is prolonged as a result of a decrease in the moisture content. The maximum drying rate (1.4 E-3 kg. water/kg. dry solid·s) corresponds to the drying condition at 75 °C and 20 mmHg, which is the most intensive drying condition. The comparison between the predicted and experimental values showed acceptable agreement. The simulations correctly represent the drying kinetics and the evolution of the gas pressure in the drying chamber.
KW - Boundary conditions
KW - Mass transfer coefficient
KW - Passive regime
KW - Simulation
UR - http://www.scopus.com/inward/record.url?scp=85133240244&partnerID=8YFLogxK
U2 - 10.1016/j.tsep.2022.101382
DO - 10.1016/j.tsep.2022.101382
M3 - Artículo
AN - SCOPUS:85133240244
SN - 2451-9049
VL - 33
JO - Thermal Science and Engineering Progress
JF - Thermal Science and Engineering Progress
M1 - 101382
ER -