摘要
利用FLUENT软件对橙汁高温短时灭菌后的冷却工艺进行模拟。针对果汁在120℃高温灭菌工艺后中心最低温度达到80℃时进行冷却计算,得出了不同温度时冷却的最理想时间条件:20℃(293K),14min;15℃(288K),13min;10℃(283K),13min;5℃(278K),12min;0℃(273K),12min。同时根据逆卡诺循环,计算了各种理想冷却工艺的能耗,能耗最优的冷却工艺为20℃(293K)、14min。
A simulated cooling process for orange juice subjected to high-temperature short-time(HTST) sterilization was established with FLUENT software.The optimum cooling conditions for reducing the central temperature of HTST sterilized milk to a minimum of 80 ℃ were calculated as follows: 20 ℃(293 K) for 14 minutes,15 ℃(288 K) for 13 minutes,10 ℃(283 K) for 13minutes,5℃(278 K) for 12 minutes and 0 ℃(273 K) for 12 minutes.Based on Carnot efficiency from the reversed Carnot cycle,energy consumption in these different cooling processes was calculated to identify 20 ℃(293 K) for 12 minutes as the best choice.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2013年第10期77-81,共5页
Food Science
基金
上海市优秀青年基金项目(ssc09010)
上海市科委工程中心建设项目(11DZ2280300)
上海市教育委员会重点学科建设项目(J50704)
关键词
果汁
高温短时灭菌
冷却
CFD
orange juice
high-temperature short-time(HTST) sterilization
cooling
computational fluid dynamics(CFD)