低温下高纯空气黏度实验研究
Experimental study on viscosity of high purity air at low temperatures
周辛梓 1李增辉 1孟现阳 1吴江涛1
作者信息
- 1. 西安交通大学热流科学与工程教育部重点实验室,陕西 西安 710049
- 折叠
摘要
工质准确的热物理性质是工业工艺计算及设备使用优化的基础,然而空气黏度在温度190 K以下的数据匮乏,影响了工业应用的工程设计、流程优化.采用低温振动弦法黏度计实验系统,在温度范围85～190 K、压力范围0.2～5 MPa的条件下对气态、液态、超临界态高纯空气开展了黏度测量实验研究,黏度实验测量结果的标准不确定度为2.64%.本文工作可为液态空气工业应用的相关技术优化设计提供基础数据支撑.
Abstract
The accurate thermophysical properties of the working fluid are the basis for industrial process calculations and equipment usage optimization.However,the lack of data on the viscosity of air below 190 K affects the engineering design and process optimization of industrial applications.In this work,the viscosity measurements of high purity air in gas,liquid,supercritical states were performed by using a low-temperature vibrating-wire viscometer at temperatures from 85 K to 190 K and pressures from 0.2 MPa to 5 MPa.The standard uncertainty of the viscosity measurements was estimated to be 2.64%over all the ranges of temperature and pressure.Measurement results can provide basic data for the optimization design of related technologies in industrial liquid air applications.
关键词
振动弦/液态空气/热力学/黏度/测量Key words
vibrating-wire/liquid air/thermodynamics/viscosity/measurement引用本文复制引用
基金项目
国家自然科学基金项目(51976164)
陕西省自然科学基础研究计划项目(2024JC-YBMS-257)
出版年
2024
国家科技期刊平台
NSTL
万方数据