摘要
以苹果片为研究对象,运用傅里叶定律和费克定律建立了苹果片真空干燥过程的热质传递数学模型,并采用有限体积法进行了不同干燥条件下物料温度和含水率的数值模拟.结果表明:在干燥过程中,干燥温度、果片厚度和真空度等对苹果片真空干燥均有显著的影响;干燥温度越高、苹果片越薄、真空度越高,则干燥速率越快,则所需的干燥时间越短.
Apple slices as the research object,by using the Fourier law and the Fick law to set up apple slices heat and mass transfer mathematical model of the vacuum drying process,the finite volume method is used for materials under the different drying conditions of temperature and moisture content of the numerical simulation.Results show that in the process of drying,the drying temperature,the thickness of the apple fruit and the vacuum degree has a significant effect on apple slices vacuum drying.The higher the drying temperature,the thinner apple slices,the higher the vacuum degree,then the faster the drying rate,the shorter the drying time required.
出处
《陕西科技大学学报（自然科学版）》
2015年第2期143-147,共5页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(51276105)
陕西省科技厅重大科技创新计划项目(2012ZKC-10-1)
咸阳市科技计划项目(2012K03-13)
陕西省教育厅自然科学专项计划项目(2013JK1016)
关键词
苹果片
真空干燥
传热传质
数学模型
模拟
apple slices
vacuum drying
heat and mass transfer
mathematical model
simulation
