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基于干燥動力學(xué)特性的冷凍干燥過程判
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of Freeze-drying Process Based on Drying Dynamical Characteristics
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    摘要:

    判斷冷凍干燥過程的升華干燥結(jié)束點(diǎn)和解吸干燥結(jié)束點(diǎn),，對冷凍干燥過程的優(yōu)化控制有重要意義,。以富士蘋果為試驗材料,，在JDG-0.2型真空凍干試驗機(jī)上進(jìn)行了冷凍干燥動力學(xué)特性試驗。采用自制的物料水分在線測量系統(tǒng),，實時測量和繪制蘋果塊在冷凍干燥過程中的含水率及其變化曲線,，根據(jù)測量數(shù)據(jù)分析了物料冷凍干燥動力學(xué)特性,，提出了升華干燥結(jié)束點(diǎn)和解吸干燥結(jié)束點(diǎn)的判別方法,，便于冷凍干燥過程參數(shù)的優(yōu)化控制,。

    Abstract:

    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.

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崔清亮,郭玉明,鄭德聰.基于干燥動力學(xué)特性的冷凍干燥過程判[J].農(nóng)業(yè)機(jī)械學(xué)報,2010,41(4):124-127. of Freeze-drying Process Based on Drying Dynamical Characteristics[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(4):124-127.

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