РІВНЯННЯ ДЛЯ РОЗРАХУНКУ В’ЯЗКОСТІ ХОЛОДОАГЕНТІВ R32 ТА R125

А. Бойчук

doi:10.15673/0453-8307.4/2014.28046

Authors

А. Бойчук Odessa National Maritime University, Ukraine

DOI:

https://doi.org/10.15673/0453-8307.4/2014.28046

Keywords:

Refrigerants, R32, R125, Viscosity, Equations

Abstract

Equations for alternative refrigerants R32and R125 viscosity calculation expressed in terms of independent variables, such as temperature and density are worked out. Equation coefficients are determined by the least square technique according to the experimental data. The equations de-
scribe the viscosity at temperatures ranging from 232 to 423 K at a pressure up to 9.8 MPa for R32 and from 230 to 423 K at a pressure up to 10.1 MPa for R125. The composed equations accuracy is quite acceptable for engineering calculations.

References

REFERENCES

I.F. Golubev. Vjazkost' gazov i gazovyh smesej. - M.: Fizmatgiz, 1959. – 377 с.

V.E. Ljusternik. Uravnenie vjazkosti szhatogo gazoobraznogo i zhidkogo vodoroda. // Teplofizika vysokih temperatur. – 1969. – Т. 7. – № 2. – С. 367 369.

A.A. Vasserman, D.V. Fominsky. Equations of State for the Ozone-Safe Refrigerants R32 and R125. // International Journal of Thermophysics. – 2001. – Vol. 22. – No. 4. – P. 1089 – 1098.

A.A. Vasserman, А.Y. Kreizerova. Optimizaciya chisla coefficientov uravneniya sostoyaniya. // Teplofizika vysokih temperatur. – 1978. – Т. 6. – № 6. – С. 1185 – 1188.

C.M.B.P. Oliveira, W.A. Wakeham. The Viscosity of R32 and R125 at Saturation. // International Journal of Thermophysics. – 1993. – Vol. 14. – No. 6. – P. 1131 – 1143

D. Ripple, O. Matar. Viscosity of the Saturated Liquid Phase of Six Halogenated Compounds and Three Mixtures. // J. Chem. Eng. Data. – 1993. – Vol. 38. – P. 560 – 564.

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.

P.J. Dunlop. Viscosities of a series of gaseous fluorocarbons at 25°C. // The Journal of Chemical Physics. – 1994. – Vol. 100. – No. 4. – P. 3419 – 3151.

M. Takahashi, N. Shibasaki-Kitakava, C. Yokoyama, S. Takahashi. Gas Viscosity of Difluromethane from 298.15 to 423.15 K and up to 10 MPa. // J. Chem. Eng. Data. – 1995. – Vol. 40. – P. 900 902.

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.

C.M.B.P. Oliveira, W.A. Wakeham. Viscosity of R134a, R32 and R125 at Saturation. // International Journal of Thermophysics. – 1999. – Vol. 20. – No. 2. – P. 365 – 373.

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.

H.M.N.T. Avelino, J.M.N.A. Fareleira, C.M.B.P. Oliveira. Viscosity of Compressed Liquid 1,1,1-Trifluoroethane (HFC-143a) and Pentafluoroethane (HFC-125). // J.Chem. Eng. Data. – 2006. – Vol. 51. – No. 5. – P. 1672 – 1677.

Пристатейна бібліографія

И.Ф. Голубев. Вязкость газов и газовых смесей. - М.: Физматгиз, 1959. – 377 с.

В.Е. Люстерник. Уравнение вязкости сжатого газообразного и жидкого водорода. // Теплофизика высоких температур. – 1969. – Т. 7. – № 2. – С. 367 – 369.

A.A. Vasserman, D.V. Fominsky. Equations of State for the Ozone-Safe Refrigerants R32 and R125. // International Journal of Thermophysics. – 2001. – Vol. 22. – No. 4. – P. 1089 – 1098.

А.А. Вассерман, А.Я. Крейзерова. Оптимизация числа коэффициентов уравнения состояния. // Теплофизика высоких температур. – 1978. – Т. 6. - № 6. – С. 1185 – 1188.

C.M.B.P. Oliveira, W.A. Wakeham. The Viscosity of R32 and R125 at Saturation. // International Journal of Thermophysics. – 1993. – Vol. 14. – No. 6. – P. 1131 – 1143

D. Ripple, O. Matar. Viscosity of the Saturated Liquid Phase of Six Halogenated Compounds and Three Mixtures. // J. Chem. Eng. Data. – 1993. – Vol. 38. – P. 560 – 564.

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.

P.J. Dunlop. Viscosities of a series of gaseous fluorocarbons at 25°C. // The Journal of Chemical Physics. – 1994. – Vol. 100. – No. 4. – P. 3419 – 3151.

M. Takahashi, N. Shibasaki-Kitakava, C. Yokoyama, S. Takahashi. Gas Viscosity of Difluromethane from 298.15 to 423.15 K and up to 10 MPa. // J. Chem. Eng. Data. – 1995. – Vol. 40. – P. 900 – 902.

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.