Measurement of Viscosity of a Binary Mixture of R1123 + R32 Refrigerant by Tandem Capillary Tube Method

• Published in: International journal of thermophysics Vol. 41; no. 6
• Main Authors: Mondal, Dipayan, Hori, Yoshiya, Kariya, Keishi, Miyara, Akio, Jahangir Alam, Md
• Format: Journal Article
• Language: English
• Published: New York Springer US 2020; Springer Nature B.V
• Subjects: Atpc 2019; ATPC 2019: Selected Papers of the 12th Asian Thermophysical Properties Conference; Binary mixtures; Capillary tubes; Classical Mechanics; Condensed Matter Physics; Geophysics; Heat pumps; Industrial Chemistry/Chemical Engineering; Liquid phases; Physical Chemistry; Physics; Physics and Astronomy; Rankine cycle; Refrigerants; Refrigeration; Thermodynamics; Transport properties; Vapor phases; Viscosity; Viscosity measurement; Working fluids; Viscosity; R1123 + R32 mixture; Uncertainty; Tandem capillary tube method
• ISSN: 0195-928X; 1572-9567
• DOI: 10.1007/s10765-020-02653-4

A refrigerant mixture of R1123 + R32 is expected to be an alternative working fluid for refrigeration systems, organic Rankine cycle and heat pumps due to its lower global warming potential and transport properties. The goals of this work are to measure the viscosity of the liquid and vapor phases of this mixture refrigerant. Consequently, the viscosity of mixture refrigerant was measured by the tandem capillary tube method up to 4.5 MPa over a temperature range from 250.64 K to 312.61 K for the liquid phase and from 323.35 K to 382.88 K in the vapor phase, respectively. Mass fractions of measured R1123/R32 refrigerant mixture were 0.428/0.572 in the liquid phase and 0.425/0.575 in the vapor phase. The obtained experimental data were compared with estimated values of the ECS model, and the average absolute deviation (AAD) was found at 3.63 % in the liquid phase and 2.45 % of the vapor phase. Also, the measured liquid and vapor viscosity data were correlated with the Grunberg–Nissan method and Wilke mixture correlation, respectively, while the AAD was 1.33 % for liquid and 3.69 % for vapor phases. The total combined standard uncertainties in the liquid and vapor viscosity measurements were estimated to be less than 2.9 % and 3.0 %, respectively.