Investigation of the Degree of Augmentation of the Mass Transfer Coefficient of the Heat Transfer Medium in a Vortex Heat Exchanger of a Gas Pressure Regulating and Metering Station Heating System

Purpose of research. is to investigate the degree of augmentation of the mass transfer coefficient of a heat transfer medium in contact with a "spot" of liquid on the surface of the vortex blade when it is bombarded with dispersed contaminants in a vortex heat exchanger in order to identify a pattern that allows obtaining design values of the heat transfer coefficient of the heat transfer medium that have the best agreement with the experimental values provided in previously published articles [4, 6, 7].

Methods. A complex analysis of the degree of augmentation of the mass transfer coefficient of the heat transfer medium on the surface of the vortex blade in a vortex heat exchanger based on the known theoretical positions and equations of heat and mass transfer processes.

Results. The dependence of the augmentation of the mass transfer coefficient of the heat transfer medium in contact with the "spot" of liquid on the surface of the vortex blade when it is bombarded with dispersed contaminants was obtained, which allows obtaining the best agreement of the design and experimental values of the heat transfer coefficient in the vortex heat exchanger of a gas pressure regulating and metering station.

Conclusion. The values of the heat transfer coefficient of the heat transfer medium calculated using the obtained dependence of the augmentation of the mass transfer coefficient of the heat transfer medium have a satisfactory convergence with the experimental data, which allows us to use this dependence in engineering calculations of the design parameters of the vortex heat exchanger used as a heat exchanger for the heating system of the working area of the gas pressure regulating and metering station. This technical solution allows not only saving natural gas as a source of heat generation, but also reducing the negative impact on the environment, since there is no need to burn natural gas. In this case, the production of thermal energy is carried out due to a regulated pressure drop of natural gas coming from the main line to consumers.

1. Kobelev N. S., Grigorova N. P. e. a.; Vikhrevoi teploobmennyi element [Vortical heat exchange element]. Patent RF, no. 2016110870, 2016.

2. Kobelev N. S., Grigorova N. P. e. a.; Vikhrevoi teploobmennyi element [Vortical heat exchange element]. Patent RF, no. 2016128870953, 2017.

3. Grigorova N. P., Monastyrev P. V., Pakhomova E. G., Semicheva N. E. Teplotekhnicheskii raschet konstruktivnykh parametrov vikhrevogo teploobmennogo apparata sistemy otopleniya gazoregulyatornogo punkta [Teplotekhnichesky raschet konstruktivnykh parametry vortirevogo heat exchanger of the heating system of the gas-regulating point]. Zhurnal BST. Tekhnologiya i organizatsiya stroitel'stva. Nauka 2.1 = Technology and Organization of Construction. Nauka 2.1, 2020, no. 8, pp. 45-49 (In Russ.).

4. Pakhomova, G. E., Grigorova N. P, Monastyrev P. V., Semicheva N. E. Experimental study of influence of fi ne drop moisture and contaminants in heat carrier on coefficient of heat removal of vortex heat exchanger of gas control station heating system. Journal of Applied Engineering Science, 2020, no. 18(3), pp. 427-431.

5. Grigorov N. P., Monastyrev P. V., Pakhomova E. G., Semicheva N. E. Aerodynamics and Heat Transfer of Swirling Natural Gas Flow in a Vortex Heat Exchanger of the Heating System of a Gas Control Point. Izvestiya Yugo-Zapadnogo gosudarstvennogo universiteta = Proceedings of the Southwest State University. 2020; 24(3): 99-110 (In Russ.). https://doi.org/10.21869/2223-1560-2020-24-3-99-110

6. Grigorova, N. P., Monastyrev P. V., Pakhomova E. G., Semicheva N. E. Kharakter dvizheniya elementarnogo ob"ema gaza v vikhrevom teploobmennom apparate sistemy otopleniya gazoregulyatornogo punkta [The Nature of the motion of a particle in a vortex gas heat exchanger heating system gas control unit. Byulleten' stroitel'noi tekhniki (BST) = Building Technical (BST), 2020, no. 11 (1035), pp. 53-55 (In Russ.).

7. Grigorova N. P., Monastyrev P. V. [Experimental study of the influence of fine-dispersed droplet moisture and pollution in the heat carrier on the heat transfer coefficient of the vortex heat exchanger of the gas-regulating point heating system]. Sovremennye problemy v stroitel'stve: postanovka zadach i puti ikh resheniya. Sbornik nauchnykh statei Mezhdunarodnoi nauchno-prakticheskoi konferentsii [Modern problems in construction: setting tasks and ways to solve them. Collection of scientific articles of the International Scientific and Practical Conference]. Kursk, 2020, pp. 139-141 (In Russ.).

8. Sedov A. I. Mekhanika sploshnykh sred [Mechanics of continuous media]. Moscow, Nauka Publ., 1980. 348 p. (In Russ.).

9. Sudarev A.V., Kuznetsov L. A. Teploperedacha zakruchennoi strui vozdukha pri dvizhenii po vnutrennei poverkhnosti tsilindra [Heat transfer of a swirled air jet when moving along the inner surface of the cylinder]. Energomashinostroenie, 1968, no. 1, pp. 18-21 (In Russ.).

10. Wong Ch. Osnovnye formuly i dannye po teploobmenu dlya inzhenerov [Basic formulas and data on heat exchange for engineers]. Moscow, Atomizdat Publ., 1979. 216 p. (In Russ.).

11. Tretyakov V. V., Yagodkin V. I. [Application of two-parameter turbulence models for calculating swirling currents]. Vikhrevoi effekt i ego primenenie v tekhnike [Vortex effect and its application in engineering]. Kuibyshev, 1984, pp. 233-238 (In Russ.).

12. Khauzen H. Teploperedacha pri protivotoke, pryamotoke i perekrestnom toke [Heat transfer in counter-current, direct current and cross-current]. Moscow, Energoizdat Publ., 1981. 384 p. (In Russ.).

13. Shchukin V. K., Khalatov A. A. Teploobmen, massoobmen i gidrodinamika zakruchennykh potokov v osesimmetrichnykh kanalakh [Heat transfer, mass transfer and hydrodynamics of swirling flows in axisymmetric channels]. Moscow, Mashinostroenie Publ., 1982. 200 p. (In Russ.).

14. Zhukauskas A. A. Konvektivnyi perenos v teploobmennikakh [Convective transfer in heat exchangers]. Moscow, Nauka Publ., 1982. 472 p.

15. Khalatov A. A. Teoriya i praktika zakruchennykh potokov [Theory and practice of swirling flows]. Kiev, Nauk. dumka, 1989. 192 p. (In Russ.).

16. Taubman E. M. [et al.]. Kontaktnye teploobmenniki [Contact heat exchangers]. Moscow, Khimiya Publ., 1987. 256 p. (In Russ.).

17. Khalatov A. A. Novyi kriterii gidrodinamicheskogo podobiya vnutrennikh zakruchennykh potokov i rezul'taty obobshcheniya opytnykh dannykh [A new criterion for the hydrodynamic similarity of internal swirling flows and the results of generalization of experimental data]. Turbulenzmobelle und ihre Anwendung in der Technik. Berlin, 1982, pp. 38-42(In Russ.).

18. Shchukin V. K., Khalatov A. A., Letyagin V. G. Eksperimental'noe issledovanie struktury pristennogo techeniya v potoke s nachal'noi zakrutkoi [Experimental study of the structure of the wall flow in a flow with an initial twist. ov]. Izv. vuzov. Aviatsionnaya tekhnika = Izv.vuz. Aviation Equipmen, 1991, pp. 267-271 (In Russ.).