Experimental study on viscosity of high purity air at low temperatures

doi:10.11949/0438-1157.20231321

Abstract

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.

Key words: vibrating-wire, liquid air, thermodynamics, viscosity, measurement

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。

关键词: 振动弦, 液态空气, 热力学, 黏度, 测量

CLC Number:

TK 123

Xinzi ZHOU, Zenghui LI, Xianyang MENG, Jiangtao WU. Experimental study on viscosity of high purity air at low temperatures[J]. CIESC Journal, 2024, 75(3): 782-788.

周辛梓, 李增辉, 孟现阳, 吴江涛. 低温下高纯空气黏度实验研究[J]. 化工学报, 2024, 75(3): 782-788.

Figures/Tables 6

References 30

1	李式模. 低温工程技术综述[J]. 低温工程, 1999(3): 1-5, 26.
	Li S M. The summary for cryogenic engineering technology[J]. Cryogenics, 1999(3): 1-5, 26.
2	Smith A R, Klosek J. A review of air separation technologies and their integration with energy conversion processes[J]. Fuel Processing Technology, 2001, 70(2): 115-134.
3	Vecchi A, Li Y L, Ding Y L, et al. Liquid air energy storage (LAES): a review on technology state-of-the-art, integration pathways and future perspectives[J]. Advances in Applied Energy, 2021, 3: 100047.
4	Qi M, Park J, Lee I, et al. Liquid air as an emerging energy vector towards carbon neutrality: a multi-scale systems perspective[J]. Renewable and Sustainable Energy Reviews, 2022, 159: 112201.
5	Babikova D, Petrov A. Study of cavitation characteristics of a cryogenic pump by computational fluid dynamic methods[J]. IOP Conference Series: Materials Science and Engineering, 2020, 779(1): 012010.
6	Bhutta M U, Khan Z A, Garland N, et al. A historical review on the tribological performance of refrigerants used in compressors[J]. Tribology in Industry, 2018, 40(1): 19-51.
7	孙琳, 付必伟, 魏梦辉, 等. 新型同轴套管式换热器强化传热研究[J]. 液压与气动, 2023, 47(2): 164-173.
	Sun L, Fu B W, Wei M H, et al. New coaxial borehole heat exchanger strengthens heat transfer research[J]. Chinese Hydraulics & Pneumatics, 2023, 47(2): 164-173.
8	Wu W, Wei C H, Zhou J J, et al. Numerical and experimental nonlinear dynamics of a proportional pressure-regulating valve[J]. Nonlinear Dynamics, 2021, 103(2): 1415-1425.
9	Huber M L, Lemmon E W, Bell I H, et al. The NIST REFPROP database for highly accurate properties of industrially important fluids[J]. Industrial & Engineering Chemistry Research, 2022, 61(42): 15449-15472.
10	Kadoya K, Matsunaga N, Nagashima A. Viscosity and thermal conductivity of dry air in the gaseous phase[J]. Journal of Physical and Chemical Reference Data, 1985, 14(4): 947-970.
11	Lemmon E W, Jacobsen R T. Viscosity and thermal conductivity equations for nitrogen, oxygen, argon, and air[J]. International Journal of Thermophysics, 2004, 25(1): 21-69.
12	Johnston H L, McCloskey K E. Viscosities of several common gases between 90°K. and room temperature[J]. The Journal of Physical Chemistry, 1940, 44(9): 1038-1058.
13	Matthews G P, Thomas C M S R, Dufty A N, et al. Viscosities of oxygen and air over a wide range of temperatures[J]. Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1976, 72: 238-244.
14	Sutherland B P, Maass O. Measurement of the viscosity of gases over a large temperature range[J]. Canadian Journal of Research, 1932, 6(4): 428-443.
15	Diller D E, Aragon A S, Laesecke A. Measurements of the viscosity of compressed liquid air at temperatures between 70 and 130 K[J]. Cryogenics, 1991, 31(12): 1070-1072.
16	Latto B, Saunders M W. Absolute viscosity of air down to cryogenic temperatures and up to high pressures[J]. Journal of Mechanical Engineering Science, 1973, 15(4): 266-270.
17	Haynes W M, Diller D E, Roder H M. Transport properties of fluids of cryogenic interest[J]. Cryogenics, 1987, 27(7): 348-360.
18	Kestin J, Sokolov M, Wakeham W. Theory of capillary viscometers[J]. Applied Scientific Research, 1973, 27(1): 241-264.
19	Nieuwoudt J C, Sengers J V, Kestin J. On the theory of oscillating-cup viscometers[J]. Physica A: Statistical Mechanics and Its Applications, 1988, 149(1/2): 107-122.
20	Diller D E, Frederick N V. Torsional piezoelectric crystal viscometer for compressed gases and liquids[J]. International Journal of Thermophysics, 1989, 10(1): 145-157.
21	Tough J T, McCormick W D, Dash J G. Viscosity of liquid He Ⅱ[J]. Physical Review, 1963, 132(6): 2373-2378.
22	Retsina T, Richardson S M, Wakeham W A. The theory of a vibrating-rod densimeter[J]. Applied Scientific Research, 1986, 43(2): 127-158.
23	Retsina T, Richardson S M, Wakeham W A. The theory of a vibrating-rod viscometer[J]. Applied Scientific Research, 1987, 43(4): 325-346.
24	Pádua A A H, Fareleira J M N A, Calado J C G, et al. Electromechanical model for vibrating-wire instruments[J]. Review of Scientific Instruments, 1998, 69(6): 2392-2399.
25	Kandil M E, Marsh K N, Goodwin A R H. Vibrating wire viscometer with wire diameters of (0.05 and 0.15) mm: results for methylbenzene and two fluids with nominal viscosities at T = 298 K and p=0.01 MPa of (14 and 232) mPa·s at temperatures between (298 and 373) K and pressures below 40 MPa[J]. Journal of Chemical & Engineering Data, 2005, 50(2): 647-655.
26	Caetano F J P, Fareleira J M N A, Oliveira C M B P, et al. Validation of a vibrating-wire viscometer: measurements in the range of 0.5 to 135 mPa·s[J]. Journal of Chemical & Engineering Data, 2005, 50(1): 201-205.
27	Span R, Lemmon E W, Jacobsen R T, et al. A reference equation of state for the thermodynamic properties of nitrogen for temperatures from 63.151 to 1000 K and pressures to 2200 MPa[J]. Journal of Physical and Chemical Reference Data, 2000, 29(6): 1361-1433.
28	Lassner E, Schubert W D. Tungsten: Properties, Chemistry, Technology of the Element, Alloys, and Chemical Compounds[M]. New York: Kluwer Academic/Plenum Publishers, 1999.
29	Kunz O, Wagner W. The GERG-2008 wide-range equation of state for natural gases and other mixtures: an expansion of GERG-2004[J]. Journal of Chemical & Engineering Data, 2012, 57(11): 3032-3091.
30	Ely J F, Hanley H J M. Prediction of transport properties (1): Viscosity of fluids and mixtures[J]. Industrial & Engineering Chemistry Fundamentals, 1981, 20(4): 323-332.

参数	数值	来源
丝半径/μm	24.34	液氮标定
丝长/mm	50	测量
丝密度/(kg·m^-3)	19251.3	文献^[28]
内部阻尼系数	2.77×10^-5	真空测量

参数	数值	来源
丝半径/μm	24.34	液氮标定
丝长/mm	50	测量
丝密度/(kg·m^-3)	19251.3	文献^[28]
内部阻尼系数	2.77×10^-5	真空测量

来源	因素自身的不确定度	黏度测量的不确定度
合计		2.64%
温度	18 mK	0.1%
压力	6 kPa	0.1%
丝半径	1%	2%
流体的密度计算及混合物的组分	0.8%	0.8%
金属丝的内部阻尼系数	30%	1.4%
钨丝的密度	30 kg·m^-3	0.3%
测量的重复性	—	0.5%

来源	因素自身的不确定度	黏度测量的不确定度
合计		2.64%
温度	18 mK	0.1%
压力	6 kPa	0.1%
丝半径	1%	2%
流体的密度计算及混合物的组分	0.8%	0.8%
金属丝的内部阻尼系数	30%	1.4%
钨丝的密度	30 kg·m^-3	0.3%
测量的重复性	—	0.5%

状态	温度/K	压力/MPa	密度/(kg·m^-3)	黏度/(μPa·s)
气态	100.00	0.45	17.27	6.46
	110.00	0.50	17.03	7.22
	119.99	0.55	16.72	8.01
	119.99	1.14	39.02	8.47
	129.99	0.58	16.49	8.76
	129.99	1.25	38.30	9.25
	129.99	3.24	164.53	12.32
	139.99	0.62	16.27	9.45
	139.99	1.36	37.78	9.95
	139.99	2.81	93.19	10.93
	150.00	0.54	12.83	10.00
	150.00	1.03	25.49	10.39
	150.00	3.10	91.10	11.60
	160.00	0.57	12.66	10.70
	160.00	1.09	25.03	11.11
	160.00	3.36	89.06	12.35
	170.01	0.60	12.48	11.35
	170.01	1.15	24.60	11.42
	170.01	2.91	67.70	12.75
	180.00	1.20	24.18	12.41
	180.00	3.07	66.17	13.35
	180.01	0.54	10.51	11.85
	189.99	0.56	10.41	12.43
	190.00	0.81	15.14	12.71
	190.00	3.26	65.41	14.02
液态	84.97	0.20	843.86	138.55
	84.97	0.53	844.81	138.31
	84.97	0.87	845.78	140.88
	84.97	2.72	850.99	149.96
	89.99	0.31	819.06	118.54
	89.99	0.62	820.12	118.30
	89.99	1.29	822.40	120.74
	89.99	3.02	828.02	125.01
	89.99	4.73	833.29	129.19
	100.00	0.68	765.31	89.01
	100.00	0.98	766.85	88.75
	100.00	2.94	776.26	92.94
	100.01	4.92	784.76	98.13
	110.00	1.27	702.73	67.53
	110.00	2.91	715.74	70.50
	110.00	4.81	728.50	74.28
	119.99	2.16	576.18	49.90
	119.99	2.79	633.59	51.01
	119.99	4.85	660.56	56.57
	129.99	4.03	530.53	36.50
	129.99	4.81	560.47	40.62
超临界态	139.99	4.85	282.17	17.78
	150.00	4.72	168.43	13.75
	170.01	4.74	121.49	13.84
	180.00	4.83	111.42	14.20
	190.00	4.60	96.08	14.42