热泵系统调控的蔬菜贮藏试验装置温度场速度场研究  

Regulating the Temperature and Flow Fields of Vegetable Storage with a Heat Pump System

作　　者：徐庆[1] 李通 史亚彭 王达[2] XU Qing;LI Tong;SHI Yapeng;WANG Da(Tianjin Key Laboratory of Integrated Design and On-line Monitoring for Light Industry ＆ Food Machinery and Equipment,College of Mechanical Engineering,Tianjin University of Science ＆ Technology,Tianjin 300222,China;Jinan Fruit Research Institute,All China Federation of Supply and Marketing Cooperatives,Jinan 250014,China)

机构地区：[1]天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津科技大学机械工程学院,天津300222 [2]中华全国供销合作总社济南果品研究院,济南250014

出　　处：《天津科技大学学报》2018年第3期28-33,共6页Journal of Tianjin University of Science & Technology

基　　金：国家科技支撑计划资助项目(2015BAD19B02)

摘　　要：为解决目前蔬菜贮藏试验库内贮藏环境调控能力差的问题,研制了一套基于热泵系统调控的蔬菜贮藏试验装置.利用商业软件FLUENT,选择标准κ-ε模型和SIMPLE算法,完成了试验装置在空载和两种不同装载物料方式下气流场和温度场的二维和三维数值模拟,并通过试验对模拟结果进行了验证.结果证明:当装置内温度稳定后,装置空载时的模拟结果与试验结果的平均偏差为0.13,℃,装置装载物料时的模拟结果与试验结果的平均偏差为1.15,℃,模拟结果与试验结果具有较好的一致性.该研究揭示了热泵系统调控的蔬菜贮藏试验装置内气流场和温度场的分布规律,试验装置具有温度控制灵活,降温速度快的特点,可为大型蔬菜贮藏试验库的开发和应用提供一定的参考.In order to improve the regulation and control of vegetable storage environment,a testing device was developed with heat pump system. 2 D and 3 D numerical simulations were conducted to know the flow and temperature fields in the storage unloading and loading of two different kinds of cargo,using the commercial software FLUENT with the standard κ-ε model and SIMPLE algorithm.The simulation results were validated with tests,which showed that after the storage temperature becomes stable,the average deviation between the simulation and the experimental results is 0.13,℃ and 1.15,℃for unloading and loading,respectively.The experimental data are in good agreement with the simulation results.This study reveals the general rules of gas flow field and temperature field distribution in vegetable storage regulated by a heat pump system.Moreover,the testing device has the characteristic of flexible temperature control and fast cooling,so it can provide valuable guidance for the development and application of large scale vegetable storage testing library.

关 键 词：热泵系统 蔬菜贮藏 温度场 数值模拟 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]