饱和液体密度测量装置的研制与可靠性验证  

Development and Stability Verification of a Measuring Installation of Saturation Liquid Density

作　　者：徐英杰[1] 李鹏[1] 高赞军[1] 闵旭伟[1] 韩晓红[1] 陈光明[1] 

机构地区：[1]浙江大学制冷与低温研究所 清洁能源利用国家重点实验室,浙江杭州310027

出　　处：《工程热物理学报》2013年第1期14-18,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.50806063);浙江省自然科学基金项目(No.Y1090455)

摘　　要：本文研制了一种用于测量制冷剂饱和液体密度的实验装置,该装置主要由恒温系统与测量系统组成,其中密度的测量精度为±0.5 kg/m^3。本文以纯质制冷剂HCFC-22与混合制冷剂HFC-407C为例分别在该实验装置进行了实验测试。结果表明,无论是纯质还是混合制冷剂的液体密度实验测量结果都与文献值具有良好的一致性。在此基础上,本文还用该实验装置对HFC-407C在温度为244～337K范围内的饱和液体密度进行更细致而又精确的测量,并分别采用VDNS型方程与Rackett型方程对HFC-407C实验数据进行了关联,得到各自的方程参数及适用下HFC-407C的预测模型。所有这些研究为纯质与混合工质在实际工程中的应用打下了坚实的基础。In this paper,an experimental apparatus for measuring saturation liquid of refrigerant is developed.It consists of thermostatic system and measuring system,and the measuring uncertainty of density is±0.5 kg/m^3.Pure refrigerant HCFC-22 and Mixture refrigerant HFC-407C are tested using this experimental apparatus.According to the experimental result,the tested density value matches the reference density value very well,no matter the tested substance is a pure refrigerant or a mixture refrigerant.Based on this,the saturation liquid density of HFC-407C is carefully measured in the temperature range of 244～337 K.This experimental result is correlated with VDNS-type equation and Rackett-type equation and parameters of the equations are obtained.All the work is important to the pure and mixed refrigerants in the practice application.

关 键 词：液体密度 状态方程 HCFC-22 HFC-407C 实验 

分 类 号：TK121[动力工程及工程热物理—工程热物理]