海水冷却条件对鱼糜脱水温升抑制的数值模拟  

Numerical simulation of seawater cooling during surimi dehydration

作　　者：林蔚[1] 郑晓伟[1] 欧阳杰[1] 沈建[1] 

机构地区：[1]农业部渔业装备与工程重点开放实验室中国水产科学研究院渔业机械仪器研究所,上海200092

出　　处：《渔业现代化》2009年第6期34-38,共5页Fishery Modernization

基　　金：农业科技成果转化资金项目"冷冻鱼糜加工技术及装备中试与示范"(2007AA091802)

摘　　要：在鱼糜脱水工序内增加海水冷却系统,能够对加工过程中挤压发热引起的温升起到较好的抑制作用,并可控制鱼糜出料温度,提高鱼糜品质。基于螺杆挤压脱水、温升和非均匀流换热模型,应用有限元法对挤压脱水过程中的鱼糜冷却效果进行数值模拟,比较不同海水循环方式和冷却参数对鱼糜冷却效果的影响。研究表明:在螺杆内使用一定条件的循环冷海水冷却鱼糜,平均温降可达到5℃以上。对比生产试验与数值模拟结果,数据基本吻合。The utilization of seawater cooling system in surimi dehydration process can inhibit and control the temperature rise of surimi material, and hence improve the quality of surimi. Based on the heat transfer of non-uniform flow, dehydration and temperature rise model of screw press, the simulations of surimi cooling effect during dehydration are performed and compared under different operation conditions, using finite element method. The study shows that the cooling effect of above 5℃ can be achieved by circulating seawater in screw press. Comparing the data of changes in surimi temperature produced by experiment and modeling, the result mainly tallies.

关 键 词：鱼糜脱水 温升抑制 海水冷却 数值模拟 

分 类 号：S986.1[农业科学—捕捞与储运]