Moisture transport in intensive microwave heating of biomaterials: a multiphase porous media model

被引：188

作者：

Ni, H

Datta, AK ^{[1
]}

Torrance, KE

机构：

[1] Cornell Univ, Dept Agr & Biol Engn, Ithaca, NY 14853 USA

[2] Cornell Univ, Sch Mech & Aerosp Engn, Ithaca, NY 14853 USA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1999年 / 42卷 / 08期

基金：

美国国家卫生研究院; 美国国家科学基金会;

关键词：

D O I：

10.1016/S0017-9310(98)00123-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A multiphase porous media model was developed to predict moisture transport during intensive microwave heating of biomaterials. Internal pressure gradients arise from internal heating and vaporization and significantly enhance the transport. Even a moderate internal pressure gradient in a low moisture material can cause more moisture to move to the surface than can be removed from the surface, leading to a soggy surface. A strong internal pressure gradient in a high moisture material can fully saturate the surface, leading to a very high moisture loss by liquid outflow at the surface. Addition of hot air and/or infrared heating of the surface to increase evaporation is suggested as a way to reduce surface moisture build-up. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1501 / 1512

页数：12

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