EXPERIMENTAL STUDY OF INFLUENCE OF FINE DROP MOISTURE AND CONTAMINANTS IN HEAT CARRIER ON COEFFICIENT OF HEAT REMOVAL OF VORTEX HEAT EXCHANGER OF GAS CONTROL STATION HEATING SYSTEM

  • Ekaterina Gennadievna Pakhomova Southwest State University, Kursk, Russia
  • Natalia Grigorova Pavlovna Southwest State University, Kursk, Russia
  • Monastyrev Pavel Vladislavovich Tambov State Technical University, Tambov, Russia
  • Natalia Semicheva Evgenievna Southwest State University, Kursk, Russia
Keywords: controlled pressure drop, thermodynamic stratification, vortex heat exchanger, heating system

Abstract


Experimental studies of fine drip moisture and contaminants influence in the heat carrier on the heat transfer coefficient in the vortex heat exchanger of the heating system of gas control room were described. Pilot studies were carried out in two stages.

At the first stage, the test values of coolant temperature decrease were analyzed due to heat removal for evaporation and heat transfer coefficient under idealized conditions without taking into account the effect of fine moisture and contaminants on the process of heat transfer to the blades in the vortex heat exchange apparatus.

At the second stage, the heat transfer coefficient was studied under conditions close to actual operating conditions of vortex heat exchange element, when fine moisture and specific contaminants are in the natural gas which is in contact with water.

As a result of the first stage of experimental studies, it was found that experimental values of heat carrier temperature decrease due to heat extraction for liquid evaporation on the surface of swirling swirler blade in vortex heat exchanger are slightly different from those determined theoretically. And they mainly decrease.

Analysis of the heat transfer coefficient values under idealized conditions, obtained experimentally and calculated theoretically, shows their satisfactory convergence. This convergence is measurement error and data calculation.

As a result of the second stage of pilot studies it was revealed that availability of disperse moisture increases heat transfer coefficient in 1,4%1,9 times. There is evaporation temperature increase as the concentration of contaminants bombarding the mirror of liquids increases. This fact also intensifies heat exchange process.

Thus, as a result of experimental studies, the possibility of using a vortex heat exchange apparatus in a heating system of gas control station has been confirmed.

References

1. Dubrakova K.O., Monastyrev P.V., Klychnikov R.Y., Yezerskiy V.A. Optimization of thermal modernization of a group of buildings using simulation modeling // Journal of Applied Engineering Science, Volume 17, Issue 2, 2019, Pages 192-197.
2. E. Mishchenko, P. Monastyrev and O. Evdokimtsev. Quality Improvement of Specialists Training for Energy-Efficient Construction. 2018 IOP Conf. Ser.: Mater. Sci. Eng. 463 032046 https://doi.org/10.1088/1757-899X/463/3/032046
3. Erofeev A.V., Yartsev V.P., Monastery P.V. Decorative and protective plates for facade finishing of buildings//News of higher educational institutions. Technology of the textile industry. 2017. № 1 (367). Pages 101-104.
4. Gusev B.V., Yezersky V.A., Monastery P.V. Thermal conductivity of mineral wool boards in operational conditions//Industrial and civil construction. - 2005. - № 1. - С.48-49.
5. Gusev B.V., Yezersky V.A., Monastery P.V. Changing the linear dimensions of mineral wool boards in operational conditions//Industrial and civil construction. - 2004. - № 8. - Pages.32-34.
6. Patent 2615878 Russian Federation: MPC F 28 D 7/10. Vortex heat exchange element/Kobelev N.S., Grigorov N.P. [et al]; Applicant and patent holder Kursk state technical university. No. 2016110870; publ. 11.04.2017. Bul. № 11.
7. Patent 2622340 Russian Federation: MPC F 28 D 7/10. Vortex heat exchange element/Kobelev N.S., Grigorov N.P. [et al]; Applicant and patent holder Kursk state technical university. No. 2016128870953; publ. 14.06.2017, Bul. № 17.
8. Exhaust air heat recovery systems in public buildings and structures: Typical design materials. 904-02-24.86/Kiev: CNMIEP of engineering equipment, 1988. 98 pages.
9. Goldschtik, M.A. Vortex Flows [Text]/M.A. Goldschtik. Novosibirsk: Science, 1981. 336 pages.
10. Kolyshev, N.D. Study of heat transfer in the working space of the vortex pipe with diffuser/N.D. Kolyshev, N.I. Orodnikov//works of Kuibevsky aviation in-th. 1979. Issue 37.
11. Ovchinnikov, A.A. Study of hydro aerodynamic patterns in vortex mass exchange by tangential swirlers. Abstract of thesis /A.A. Ovchinnikov. Kazan, 1973. 24 pages.
12. Lapkevich, V.I. Intensification of heat collection in pipes with internal screw finning/V.I. Lapkevich, N.I. Perepelica, A.P. Sapankevich//Heat power engineering. 1980. №6. Pages 2224.
Published
2020/09/15
Section
Original Scientific Paper