摘要
利用非稳态导热的理论,建立数学方程。采用常见的液体食品纯净水、牛奶、橙汁为实验材料,并分别采用圆柱体和长方体容器盛装、封闭,分别用水浴温度50、60、70℃进行加热。通过实验测得的温度、时间数据,确定数学方程中的常数。从而获得圆柱体和长方体在非稳态导热的条件下,中心温度随时间变化的方程。
Mathematics formula was found with the theory in unsteady heat conduction.Common liquid food like pure water, milk and orange juice as the material, they were contained and closed with vessels of long-square shape and cylinder shape,which was heated by the water of 50,60,70℃.The constants were determined with the data of the temperature and time.The formula of the relation of time and the centre temperature of cylinder shape and the long-square shape liquid food was obtained under the unsteady heat conduction.
出处
《食品工业科技》
CAS
CSCD
北大核心
2010年第11期138-140,143,共4页
Science and Technology of Food Industry
关键词
液态食品
非稳态导热
数学方程
liquid food
unsteady heat conduction
mathematics formula
