A MOISTURE TRANSMEMBRANE TRANSFER MODEL FOR PORE NETWORK SIMULATION OF PLANT MATERIALS DRYING
The drying of plant materials with cellular tissue is often viewed as drying of porous media which is assumed to consist of cell cytoskeleton and intercellular space.Various approaches have been reported in the literature to describe heat and mass transfer during drying of such porous materials.However,the fact remains that the water in a cellular tissue is mostly intracellular and it should be driven out of the cells across cell membranes before transporting in cell gaps,as in a general porous media.In the present study,the transport process of moisture in a cellular tissue was analyzed.A mathematical model for moisture transport across the cell membrane was established,which was correlated to a self-developed dual scale pore network model (cell and pore network) for drying of plant materials.The relationship between mass volumetric flux and average intracellular moisture content was developed based on the microscopic images and the drying experiments.
isothermal drying mass transfer model moisture transmembrane transport onion porous media
X.L.Huang T.T.Qi Z.H.Wang X.D.Liu
College of Engineering,China Agricultural University 17 Qinghua East Rd,Haidian,Beijing,100083,China
国际会议
The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))
厦门
英文
1-8
2012-01-11（万方平台首次上网日期，不代表论文的发表时间）