保护器测试系统恒温箱的CFD研究与实验验证  

CFD modelling and experimental verification on thermostat of protector testing system

作　　者：沈希[1] 张舒[1] 徐鸣[1] 黄跃进[1] 顾江萍[1] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310014

出　　处：《浙江工业大学学报》2015年第3期237-240,共4页Journal of Zhejiang University of Technology

基　　金：国家自然科学基金资助项目(51076143)

摘　　要：为了测试压缩机保护器在特定温度的运行情况,需要对温度进行必要的控制.针对保护器温度特性检测系统中的恒温箱均匀度差的问题,建立了恒温箱流体域CFD数值模型,得到了恒温箱的温度场、速度场模型.恒温箱内5个测温点温度数据与模拟数据基本吻合,验证了该数值模型的正确性.分析结果表明:送风温差适当的降低有利于温度均匀性的改善,同时送风速度及恒温箱结构也对恒温箱均匀度有很大的影响.In order to test the operating conditions of the compressor protector under specific temperature protection, necessary control of the temperature is needed. Aiming at problem of average degree of the temperature characteristic test system of protector, the CFD numerical model of thermostat is established to get temperature field and velocity field . Using Delphi for upper machine, data collected from five points on the test surface matched the simulated data. It verifies the correctness of the numerical model. Analysis results show that appropriate reducing of supply air temperature is conducive to the improvement of average degree and the supply air＇s velocity and the structure of thermostat also have great influence on incubator evenness.

关 键 词：恒温箱 温度场 均匀度 数值模拟 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]