Effect of Thermophysical Properties on Coupled Heat and Mass Transfer in Porous Material during Forced Convective Drying

被引：5

作者：

Cai, Wei ^{[1
]}

Zhu, Lexian ^{[1
]}

Dong, Shilin ^{[1
]}

Xie, Guozhen ^{[2
]}

Li, Junming ^{[3
]}

机构：

[1] Ningbo Univ Technol, Inst Bldg Energy Conservat, Ningbo 315016, Zhejiang, Peoples R China

[2] Beijing Univ Civil Engn & Architecture, Sch Energy, Beijing 100044, Peoples R China

[3] Tsinghua Univ, Dept Thermal Engn, Beijing 100084, Peoples R China

来源：

ADVANCES IN MECHANICAL ENGINEERING | 2014年

关键词：

MODEL; SIMULATION;

D O I：

10.1155/2014/830387

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The convective drying kinetics of porous medium was investigated numerically. A mathematical model for forced convective drying was established to estimate the evolution of moisture content and temperature inside multilayered porous medium. The set of coupled partial differential equations with the specified boundary and initial conditions were solved numerically using a MATLAB code. An experimental setup of convective drying had been constructed and validated the theoretical model. The temperature and moisture content of the potato samples were dynamically measured and recorded during the drying process. Results indicate that thermal diffusion coefficient has significant positive impact on temperature distribution and mass diffusion coefficient might directly affect the moisture content distribution. Soret effect has a significant impact on heat flux and temperature distribution in the presence of large temperature gradient.

引用

页数：7

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