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Calculation of heat transfer in turbulent flow of hydrocarbons with supercritical state parameters
https://doi.org/10.15518/isjaee.2024.10.045-059
Abstract
The paper considers heat exchange at supercritical pressures of n-heptane in different positions of the pipe. Comparisons of the data obtained in experiments with the calculated ones are given. It is revealed that somewhat significant discrepancies between the experimental and calculated values of the Nusselt criterion are observed in the region of the secondary improved heat transfer mode, where with an insignificant increase in the heat flux density as a result of the influence of the combined actions of various factors, a decrease in the wall temperature of about 150 °C and more occurs. At the same time, the calculated values of the Nusselt criterion in a number of cases are approximately 25% less than the experimental ones.
As a result of the analysis of experimental data, it was established that, regardless of the direction of fluid flow and the position of the pipe under conditions tc ≈ tm and tc ˃ tm, the temperature of the cooled surface along the length of the pipe The pipe is distributed nonlinearly – in the middle part of it x/d ≈ 60 there are pronounced temperature maxima of the walls.
About the Authors
Sh. H. Mamedov
Sumgait State University
Azerbaijan
Azerbaijan
Mamedov Shikar Haji oqli, associate professor of the Department of Electrical Engineering and Power Engineering
AZ 5008, Sumgait, 43rd district
Sh. N. Nasirov
Azerbaijan State Oil and Industry University
Azerbaijan
Azerbaijan
Nasirov Shukur Nariman oqli, Ph.D. in Engineering, Assoc. Prof.,
Head of the Department of Energy Production Technology
Az 1010, Baku, Azadlig Ave., 16/2
G. K. Abdullaeva
Azerbaijan State Oil and Industry University
Azerbaijan
Azerbaijan
Abdullaeva Gulshan Kamal kyzy, Ph.D. in Engineering, Senior Lecturer, Associate Professor of the Department of Thermal Power Engineering
Az 1010, Baku, Azadlig Ave., 16/2
References
1. . Petukhov B. S. Heat transfer in a homogeneous medium at near-critical state parameters // TVT-1968. – № 4, v. 6, pp. 732-745.
2. . Isaev G. I. Experimental study of heat transfer during toluene and benzene liquid flow in a pipe at supercritical pressure: diss. … сand. of тech. sciences. – Baku, 1975. – P. 110.
3. . Mamedov R. S. Heat transfer during turbulent flow of n-hexane and ethylbenzene in a pipe at supercritical pressures: diss. … cand. of tech. sciences. – Baku, 1986. – P. 122.
4. . Mamedov F. Kh. Heat transfer during forced movement of toluene and n-hexane in a horizontal pipe at supercritical pressures: diss. … cand. of tech. sciences. – Baku, 1988. – P. 109.
5. . Mamedov Sh. G. and etc. Recovery of High-potential heat in the steel industry for the production of hydrogen and carbon on hydrocarbon cracking plants of the petrochemical industry // Alternative Energy and Ecology (ISJAEE), 2000-2023.
6. . Mamedov Sh. G. and etc. Productions of hydrogen and carbon in the petrochemical industry by cracking of hydrocarbons in the process of heat utilization in steel production // International Journal of Hydrogen Energy, Volume 48, Issue 40, 8 May 2023, Pages 14954-14963.
7. . Mamedov Sh. G. and etc. Study of the heat transfer of hydrogen and marginal hydrocarbons at supercritikal pressures // ISJAEE-IJHE#083-184-001, Q1-Scopus, (Q1/Q2)-Web of Science, 2023. 8. Mamedov Sh. G. et al. Change in wall temperature of horizontal and inclined pipes depending on heat flux density during turbulent flow of n-heptane and supercritical pressures // Scientific journal pub. «Problems of Science», No. 5 (28) 2018, pp. 23-27.
8. . Mamedov Sh. G. et al. Heat transfer under forced motion and supercritical pressure // For technical progress. – 1980. – No. 5, pp. 31-34.
9. . Mamedov Sh. G. et al. Experimental study of heat transfer of n-heptane in a horizontal pipe under supercritical pressure // Power Engineering-1981. – No. 2, pp. 95-97. News of higher educational institutions.
10. . Mamedov Sh. G. On improved heat transfer modes // Collection of scientific papers. Baku-1983, pp. 16-22.
11. . Mamedov Sh. G. et al. Heat transfer to n-heptane in horizontal pipes // Thematic collection «Water treatment and water mode of thermal power plants». – Baku. – 1984. – Рp. 76-79.
12. . Mamedov Sh. G. et al. Study of heat transfer of n-heptane in horizontal pipes at different supercritical pressures // Oil and Gas. Izvestiya Vuzov. – 1985. – No. 7, pp. 68-70.
13. . Mamedov Sh. G. et al. Heat transfer of n-heptane during turbulent flow and supercritical pressures // Oil and Gas. Izvestiya Vuzov. – 1985. – No. 6, pp. 53-57.
14. . Mamedov Sh. G. et al. Convective heat transfer during forced and free movement of saturated and aromatic hydrocarbons at supercritical pressures // Abstracts of reports of the International forum on heat and mass transfer. – Minsk: 1988. – Part 2. – Pр. 58-60.
15. . Mamedov Sh. G. et al. Temperature regime of pipe walls at supercritical pressures of organic heat carriers // Abstracts of reports of the All-Union seminar «Heat and mass transfer and hydrodynamics of thin jets of viscous liquid». – Dnepropetrovsk: 1989. – P. 84.
16. . Kelbaliyev R. F. Heat transfer during liquid boiling in the pressure range close to critical // Thermal Power Engineering. – No. 3, 39-42 (2002).
17. . Rzayev M. A. Heat transfer in steam-generating tubes at supercritical pressures of aromatic hydrocarbons. Diss. Cand. Tech. Sciences. – Baku. 167 (1992).
18. . Rzayev M. A., Kelbaliyev R. F., Bayramov N. M. et al. Methods for determining the deterioration of heat transfer during turbulent flow and supercritical pressures of liquid / Proceedings of the XIV School-Seminar of Young Scientists and Specialists under the guidance of Academician of the Russian Academy of Sciences A. I. Leontiev. – Rybinsk: Russia. – T. 1, 109-112 (2003).
19. . Kelbaliyev R. F. Heat transfer during liquid boiling in the pressure range close to critical // Thermal Power Engineering. – 2002. – No. 3. – P. 39.
20. . Kelbaliyev R. F., Iskenderov M. Z. Study of some features of heat transfer crisis during boiling of subcooled hydrocarbons in the pressure range close to critical // High Temperature Thermal Physics, 2005. – Vol. 43. – No. 3. – P. 45
21. . Kelbaliyev R. F. Temperature regime of steam-generating tubes at near-critical pressures of a substance: Abstract of Cand. Sci. (Eng.) Dissertation. – Baku, 1998. – 24 p.
22. . Kelbaliyev R. F. Deterioration of heat transfer at supercritical pressures of a substance // Inzhenernoye Physics Journal. – 2001. – V. 74. – No. 2. – P. 115-118.
23. . Shitsman M. E. Features of the temperature regime in pipes at supercritical pressures // Thermal power engineering. – 1968. – 5. – P. 57-61.
24. . Petukhov B. S., Genin L. G., Kovalev S. A. Heat transfer in nuclear power plants. – Moscow: Energoatomizdat, 1986. – P. 470.
25. . Kurganov V. A. Heat transfer and resistance in pipes at supercritical coolant pressures // Thermal power engineering. – 1998. – No. 3. – P. 2-10. – No. 4. – P. 35-44.
26. . Kelbaliyev R. F. Study of improved heat transfer mode at supercritical liquid pressures // Problemy energetiki. – 2001. – № 2. – P. 61-66.
27. . Kovalev S. L., Leontiev A. I. Achievements of Russian scientists in the field of heat transfer research during boiling // TVT. – 1999. – Vol. 37. – № 6. – P. 989.
28. . Bobkov V. P., Vinogradov V. N., Grenfeld D. et al. Skeleton table of the 1995 version for calculating the critical heat flux in pipes // Teploenergetika. – 1997. – № 10. – P. 43.
29. . Doroshchuk V. E. Heat transfer crises during water boiling in pipes. – M.: Energoatomizdat, 1983. – 120 p.
30. . Tong L. Boiling crisis and critical heat flux. – M.: Atomizdat, 1976. – 99 p.
31. . Petukhov B. S., Benin L. K., Kovalev S. A. Heat transfer in nuclear power plants. – M.: Energoatomizdat, 1986. – 312 p.
32. . Kutateladze S. S. Fundamentals of heat transfer theory. – M.: Atomizdat, 1979. – 456 p.
33. . Kirillov P. L. Calculation of critical heat loads during boiling of water in pipes, subcooled to the saturation temperature (uniform distribution of heat load). In the book: Heat transfer crisis during boiling in channels. – Obninsk: FEN, 1974. – P. 15.
34. . Kelbaliyev R. F. Heat transfer during liquid boiling in the pressure range close to critical // Thermal power engineering. – 2002. – No. 3. – P. 39.
35. . Kutepov A. M., Sterman L. S., Styushin N. G. Hydrodynamics and heat transfer during steam formation. – Moscow: Higher. school, 1986. – 448 p.
36. . Labuntsov D. A., Yagov V. V. Mechanics of two-phase systems. – Moscow: MPEI Publishing House, 2000. – 374 p.
37. . Dedov A. V., Varavva A. N., Komov A. T., Yagov V. V. Peculiarities of Heat Transfer in a Subcooled Swirling Flow // Proc. of the III Rus. National Conf. on Heat Transfer. – Vol. 4. – Moscow: MPEI Publishing House, 2002. – P. 76.
38. . Glazkov VV, Zhilin VT, Zeigarnik Yu. A. Experimental Study of Changes in Boiling Regimes on a Highly Superheated Hemisphere Immersed in a Subcooled Liquid // Proc. of the III Rus. National Conf. on Heat Transfer. – Vol. 4. – Moscow: MPEI Publishing House, 2002. – P. 72.
39. . Glazkov VV, Zhilin VT, Zeigarnik Yu. A. et al. Explosive Regime of Instability Development Leading to Destruction of a Vapor Film on a Solid Heated Hemispherical Surface // Dokl. RAS. – 2001. – V. 376. – No. 3. – P. 328.
40. . Mamedov Sh. G., Nasirov Sh. N., Rzayev M. A., Neymetov S. R., Verdiev N. M. Study of heat transfer during the movement of saturated hydrocarbons (n-heptane) in a pipe at supercritical pressures // Alternative Energy and Ecology (ISJAEE), 09(426) 2024, pp. 32-52.
Review
For citations:
Mamedov Sh.H., Nasirov Sh.N., Abdullaeva G.K. Calculation of heat transfer in turbulent flow of hydrocarbons with supercritical state parameters. Alternative Energy and Ecology (ISJAEE). 2024;(10):45-59. (In Russ.) https://doi.org/10.15518/isjaee.2024.10.045-059
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