Viscosity of refrigerants R12, R113, and R114 and mixtures of R12 + R114 at high pressure

Conference · Mon May 01 00:00:00 EDT 1989 · International Journal of Thermophysics; (USA)

OSTI ID:5649750

Nabizadeh, H; Mayinger, F ^[1]

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1. Technische Universitaet Muenchen (West Germany)

New viscosity measurements for the gaseous and supercritical state of the halogenated hydrocarbons R12, R113, and R114 and binary mixtures of R12 + R114 of different compositions are presented. The measurements were carried out at superheated and supercritical temperatures from 30 to 200{degree}C and in the pressure range from 1 to 80 bar. Viscosity was measured with an oscillating-disk viscometer and the data obtained are relative to the viscosity of nitrogen. The estimated accuracy of the measured results is {plus minus} 0.6%. The results obtained show that, at subcritical temperatures, the pressure effect on viscosity is negative. This anomalous behavior is investigated in detail in this work. At atmospheric pressure the viscosity of gas mixtures is almost a linear function of their composition. At high pressure, the residual viscosities {eta} {minus} {eta}{sub 0} of both the pure components and the mixtures were used to follow a single relationship versus the residual reduced density {rho}{sub r0}.

• OSTI ID: 5649750
• Report Number(s): CONF-880606-; CODEN: IJTHD
• Journal Information: International Journal of Thermophysics; (USA), Vol. 10:3; Conference: 10. symposium on thermophysical properties, Gaithersburg, MD (USA), 20-23 Jun 1988; ISSN 0195-928X
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHLORINATED ALIPHATIC HYDROCARBONS
VISCOSITY
FLUORINATED ALIPHATIC HYDROCARBONS
REFRIGERANTS
COOLING SYSTEMS
CRITICAL PRESSURE
CRITICAL TEMPERATURE
DENSITY
GASES
HIGH TEMPERATURE
MEDIUM PRESSURE
MEDIUM TEMPERATURE
MIXTURES
PRESSURE DEPENDENCE
SATURATION
SUPERCRITICAL STATE
SUPERHEATING
THERMAL POWER PLANTS
VISCOSIMETERS
DISPERSIONS
ENERGY SYSTEMS
FLUIDS
HALOGENATED ALIPHATIC HYDROCARBONS
HEATING
MEASURING INSTRUMENTS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
POWER PLANTS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
WORKING FLUIDS
400201* - Chemical & Physicochemical Properties