食品与机械2017，Vol.33Issue(6)：79-83,5.DOI:10.13652/j.issn.1003-5788.2017.06.016
无核白葡萄箱式热风干燥特性及干燥模型研究
Drying characteristics and mathematical model of hot air drying for white seedless grape
摘要
Abstract
Analysed the drying characteristics of white seedless grape under the conditions of air temperatures(30~45 ℃) and air velocity(0.5~2 m/s),and obtained the available moisture diffusion coeffi-cient and drying activation energy.Finally, non-linear regression analysis was used to develop four common agricultural thin layer-drying models based on the data, and these models were evaluated by coefficient of determination (R2), root mean squared error (RMSE) and chisquare value (χ2).Results: The available moisture diffusion coefficient were rising with the growth of air temperature and air velocity.The drying activation energy (Ea) is calculated to be 22.95 kJ/mol according to Arrhenius formula.According to the statistical parameters from four kinds of models, such as determination (R2), chisquare value (χ2) and root mean squared error (RMSE), the Parabolic model can well predict the moisture change law during drying process of white seedless grape.The results could provide a theoretical basis for white seedless grape drying production.关键词
热风干燥/无核白葡萄/水分扩散率/活化能/模型Key words
hot air drying/white seedless grape/moisture diffusivity/activation energy/model引用本文复制引用
杨嘉鹏,闫圣坤,徐立军,刘岩..无核白葡萄箱式热风干燥特性及干燥模型研究[J].食品与机械,2017,33(6):79-83,5.基金项目
国家自然科学基金地区基金项目(编号:31460397) （编号:31460397）
新疆工程学院科研基金项目(编号:2016xgy151812) （编号:2016xgy151812）
