РІВНЯННЯ ДЛЯ РОЗРАХУНКУ В’ЯЗКОСТІ ХОЛОДОАГЕНТІВ R32 ТА R125
DOI:
https://doi.org/10.15673/0453-8307.4/2014.28046Ключові слова:
Холодоагенти, R32, R125, В’язкість, Рівняння.Анотація
Складені рівняння для розрахунку в’язкості альтернативних холодоагентів R32 та R125 через змінні температуру та густину. Коефіцієнти рівнянь визначені методом найменших квадратів по експериментальним даним. Рівняння описують в’язкість в інтервалі температур від 232 до 423 К при тиску до 9,8 МПа для R32 та від 230 до 423 К при тиску до 10,1 МПа для R125. Точність складених рівнянь цілком прийнятна для інженерних розрахунків.Посилання
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Пристатейна бібліографія
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M.J. Assael, J.H. Dymond, S.K. Polimatidou. Measurements of the Viscosity of R134a and R32 in the Temperature Range 270-340 K at Pressures up to 20 MPa. // International Journal of Thermophysics. – 1994. – Vol. 15. – No. 4. – P. 591 – 601.
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V.Z. Geller, M.E. Paulaitis, D.B. Bivens, A. Yokozeki. Viscosities of HFC-32 and HFC-32/Lubricant Mixtures. // International Journal of Thermophysics. – 1996. – Vol. 17. – No. 1. – P. 75 – 83.
L. Sun, M. Zhu, L. Han, Z. Lin. Viscosity of Difluoromethane and Pentafluoroethane along the Saturation Line. // J.Chem. Eng. Data. – 1996. – Vol. 41. – No.2. – P. 292 – 296.
A. Laesecke, T.O.D. Luddecke, R.F. Hafer, D.J. Morris. Viscosity Measurements of Ammonia, R32, and R134a. Vapor Buoyancy and Radial Acceleration
in Capillary Viscometers. // International Journal of Thermophysics. – 1999. – Vol. 20. – No. 2. – P. 401 – 434.
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A.P. Froba, S. Will, A. Leipertz. Saturated Liquid Viscosity and Surface Tension of Alternative Refrigerants. // International Journal of Thermophysics. – 2000. – Vol. 21. – No. 6. – P. 1225 – 1253.
D.E. Diller, S.M. Peterson. Measurements of the Viscosities of Saturated and Compressed Fluid 1-Chloro-l,2,2,2-Tetrafluoroethane (R124) and Pentafluoroethane (R125) at Temperatures Between 120 and 420 K. // International Journal of Thermophysics. – 1993. – Vol. 14. – No. 1. – P. 55 – 66.
M.J. Assael, S.K. Polimatidou. Measurements of the Viscosity of Liquid R22, R124, and R125 in the Temperature Range 273-333 K at Pressures up to 17 MPa. // International Journal of Thermophysics. – 1994. – Vol. 15. – No. 5. – P. 779 – 790.
M.J. Assael, S.K. Polimatidou. Measurements of the Viscosity of Refrigerants in the Vapor Phase. // International Journal of Thermophysics. – 1997. – Vol. 18. – No. 2. – P. 353 – 366.
D. Ripple, D. Defibaugh. Viscosity of the Saturated Liquid Phase of Three Fluorinated Ethanes: R152a, R143a, and R125. // J.Chem. Eng. Data. – 1997. – Vol. 42. – No. 2. – P. 360 – 364.
M. Takahashi, N. Shibasaki-Kitakava, C. Yokoyama. Viscosity of Gaseous HFC-125 (Pentafluoroethane) Under High Pressure. // International Journal of Thermophysics. – 1999. – Vol. 20. – No. 2. – P. 445 – 453.
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