中国食品学报2012，Vol.12Issue(2)：73-80,8.
低温低湿条件下海鳗冷风干燥动力学特性
Cold-air Drying Kinetic Characteristic of Pike Eel at Low-temperature and Low-relative Humidity
摘要
Abstract
Two-stage heat pump dryer was used to simulate low temperature and low relative humidity condition that drying kinetics of pike eel was studied. Results indicated that low temperature, low relative humidity drying of pike eel showed no constant rate period and was entering the falling rate period in the very beginning. The whole falling rate period could be divided into two parts named the first falling rate period and the second falling rate period, furthermore, their moisture diffusion characteristic was analyzed. Different drying models were compared by non-linear regression analysis, and concluded that under experiment conditions Page model fitting best, also figure out the model expression formula. Combining Fick's second law for diffusion with Arrhenius-type relationship calculated that effective moisture diffu-sivity and diffusion activation energy were 2.6197~4.0224×l0-10m2/s & 15.23 kJ/mol, respectively.关键词
冷风干燥/数学模型/动力学/有效水分扩散系数/活化能Key words
cold-air drying/mathematical model/kinetics/effective moisture diffusivity/activation energy引用本文复制引用
郑海波,江美都,傅玉颖,郑海鹰,陆海霞,励建荣..低温低湿条件下海鳗冷风干燥动力学特性[J].中国食品学报,2012,12(2):73-80,8.基金项目
浙江省科技计划项目(2008C1012) （2008C1012）
