Abstract
A recently modified vibrating-wire instrument was employed to measure the liquid viscosity of a wide selection of new refrigerants under pressure. Calibration of the viscometer with water over the range of measurements confirmed that the estimated uncertainty of the measurements is 0.5%, while the precision is 0.3%. With this instrument, the viscosity of chlorofuorocarbons (CFC's) and alternative refrigerants. R11. R12. R22, R32. R124, R125. 11134a. R 141 b, and R152a, was measured over the temperature range from 270 to 340 K, from just above the saturation pressure up to 211 M Pa. The experimental data, represented by polynomial functions of temperature and pressure, are used in a comparative examination of other recently reported experimental measurements of the viscosity of all these refrigerants. to investigate the uncertainty with which the viscosity is known.
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Assael, M.J., Karagiannidis, L. & Polimatidou, S.K. Measurements of the viscosity of new refrigerants in the temperature range 270–340 K at pressures up to 20 MPa. Int J Thermophys 16, 133–143 (1995). https://doi.org/10.1007/BF01438964
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DOI: https://doi.org/10.1007/BF01438964