摘要
对奶牛初乳进行了冷冻干燥试验，通过采用二次正交旋转组合试验设计方案，分别建立了单位水分能耗和单位面积生产率与冻干室压力、初乳装填厚度、初乳浓度的数学模型。通过降维分析，给出压力、厚度、浓度对试验指标的影响趋势。在较高生产率约束条件下，用复形调优法找出低能耗下较优的工艺参数，即冻干室压力５４．５４Ｐａ，初乳装填厚度１０．０２ｍｍ，初乳浓度３６．７３％
Bovine colostrum was freeze dried according to the method of quadratic rotation orthogonal experiment. By the experimental data, the mathematics models of energy consumption and productivity, with the freeze drying chamber pressure, colostrum thickness and concentration were established and the effects of the three parameters on the objectives were given. Also, the minimum energy consumption under the restrict conditions of high productivity was conducted. The results were as follows: pressure 54.5 Pa, thickness 10.02 mm, concentration 36.73%.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
1996年第2期136-141,共6页
Transactions of the Chinese Society of Agricultural Engineering
关键词
冷冻干燥
数学模型
牛乳
Freeze drying Bovine colostrum Mathematics models
