多层均热恒温系统的设计及性能测试  

Development of Multi-layer Solid Thermostatic Bath

作　　者：裴全玲 潘江[1] 崔超[2] 王玉刚[1] 

机构地区：[1]中国计量学院计量测试工程学院,浙江杭州310018 [2]浙江省计量科学研究院热工及能源计量研究所,浙江杭州310013

出　　处：《仪表技术与传感器》2013年第11期98-100,107,共4页Instrument Technique and Sensor

基　　金：浙江省质量技术监督项目(10706);国家自然科学基金项目(51176177);浙江省科技创新团队自主设计项目(2011R09024-20)

摘　　要：文中利用金属导热快速的特点,设计了一套多层均热恒温槽,并研制了温度控制及测量系统。该恒温槽由加热层、控温层和均热层组成。采用PID控制器控制恒温槽温度,温度的采集和记录由基于虚拟仪器的软件实现。在此基础上,对恒温槽的温度稳定性、均匀性和控温层与加热层的温差对恒温槽性能的影响进行了实验研究。最终实验结果表明:设计的多层恒温槽具有长时间稳定性,稳定后的温度波动度小于±5 mK,温度均匀性优于±5 mK,该恒温系统能够满足流体迁移性质实验研究的需要。This paper designed a multi-layer solid thermostatic bath. The thermostatic bath consist of heating layer, temperature controlling layer,and heat unifying layer. A PID temperature controller was used to control the temperature of the bath and a pro- gram based on LabVIEW was used to acquire and record the experimental data. The performance of the thermostatic bath was test- ed. The temperature stability, temperature uniform of the bath, and the temperature difference between the heating layer and heat u- nifying layer were considered. The results show that both of the temperature fluctuation and temperature uniform are better than ＋ 5 mK. This multi-layer thermostatic bath can meet the requirement of research of thermophysical properties of fluids.

关 键 词：恒温槽 多层均热 性能测试 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]