CAJ | 학술논문

判断冷冻干燥过程的升华干燥结束点和解吸干燥结束点,对冷冻干燥过程的优化控制有重要意义.以富士苹果为试验材料,在JDG-0.2型真空冻干试验机上进行了冷冻干燥动力学特性试验.采用自制的物料水分在线测量系统,实时测量和绘制苹果块在冷冻干燥过程中的含水率及其变化曲线,根据测量数据分析了物料冷冻干燥动力学特性,提出了升华干燥结束点和解吸干燥结束点的判别方法,便于冷冻干燥过程参数的优化控制.
판단냉동간조과정적승화간조결속점화해흡간조결속점,대냉동간조과정적우화공제유중요의의.이부사평과위시험재료,재JDG-0.2형진공동간시험궤상진행료냉동간조동역학특성시험.채용자제적물료수분재선측량계통,실시측량화회제평과괴재냉동간조과정중적함수솔급기변화곡선,근거측량수거분석료물료냉동간조동역학특성,제출료승화간조결속점화해흡간조결속점적판별방법,편우냉동간조과정삼수적우화공제.
It is of great significance for optimal controlling the freeze-drying process to determine the end of sublimation drying and desorption. The drying dynamical characteristics test for Fuji apple were carried out using the JDG-0.2 type vacuum freeze-drying machine. Based on the homemade real-time online measurement system, the moisture content of apple blocks was measured, and the changing curve was drawn during the freeze-drying process. According to the measured data, the freeze-drying dynamical characteristics were analyzed, the judgment method for the end of sublimation drying and desorption was proposed. It provides the means for optimal controlling parameters during the freeze-drying process.