HEAT EXCHANGE AND HYDRODYNAMICS IN THE JET CIRCULATION CONTACT HEATER

UDC 621.1.016

  • Saevitch Nikolay Petrovich − PhD (Engineering), Assistant Professor, the Department of Processes and Apparatus of Chemical Production. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: saevichm@belstu.by

  • Kalishuk Dmitry Grigorievich − PhD (Engineering), Associate Professor, Assistant Professor, the Department of Processes and Apparatus of Chemical Production. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: kalishdz@belstu.by

  • Kozlovskiy Vitaliy Igoryevich – Assistant Lecturer, the Department of Machines and Apparatus for Chemical and Silicate Productions. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: mr.vit.koz@mail.ru

DOI: https://doi.org/10.52065/2520-2669-2021-241-1-108-113

Keywords: heat exchanger, mixing, direct steam, condensation, circulation, jet device.

For citation: Saevitch N. P., Kalishuk D. G., Kozlovskiy V. I. Heat exchange and hydrodynamics in the jet circulation contact heater. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2021, no. 1 (241), pp. 108–113 (In Russian). DOI: https://doi.org/10.52065/2520-2669-2021-241-1-108-113.

Abstract

The article reviews and analyzes the technologies of heating liquid media and devices used for this purpose. In the review the greatest attention is paid to the process of liquid heating with sharp steam and jet mixing heat exchangers. The increase of interest in the use of jet heat exchangers-heaters of liquid media in power engineering and other branches of economic activity was noted. The design of the circulation contact heat exchanger-heater of remote type is offered. The laboratory unit for research of the circulation jet heat exchanger is described and the method of its experimental research is described. A brief description of the studied modifications of the unit is given. The results of the performed experiment and processing of experimental data as well as their analysis are given. The information obtained through visual observations and videotaping is also used in the analysis. Data on heat engineering characteristics and operation modes of the tested models of heat exchangers are given. The suitability of the apparatus developed on the basis of laboratory research results for heating liquid media containing solid inclusions has been proved.

Download

References

  1. Kasatkin A. G. Osnovnye protsessy i apparaty khimicheskoy tekhnologii [Basic processes and devi­ces of chemical technology]. Moscow, Al’yans Publ., 2004. 751 p.
  2. Lukanin V. N., Shatrov M. G., Kamfer G. M. Teplotekhnika: uchebnik dlya vuzov [Thermotechnics: textbook for universities]. Moscow, Vysshaya shkola Publ., 2000. 671 p.
  3. Isachenko V. P., Osipova V. A., Sukomel A. S. Teploperedacha [Heat transfer]. Moscow, Energoatomizdat Publ., 1981. 416 p.
  4. Belevich A. I., Kruptsev A. V., Malofeev V. A. On the application of steam injectors in heat supply. Energetik [Power engineer], 2001, no. 11, pp. 20–22 (In Russian).
  5. Nedugov A. F., Kurkulov M. A. Water-jet steam ejector with pre-mixing chamber. Promyshlennaya energetika [Industrial energy], 2007, no. 1, pp. 20–23 (In Russian).
  6. Parovye inzhektory: sayt kompanii Spirax Sarco [The steam injectors: Spirax Sarco company website]. Available at: http://www.spiraxsarco.com/ru/products-services/products/boiler-controls-and-systems/ steam-injectors.asp (accessed 09.02.2015).
  7. Ermolov V. F. Smeshivayushchie podogrevateli parovykh turbin [Mixing heaters of steam turbines]. Moscow, Energoizdat Publ., 1982. 208 p.
  8. Taubman E. I. Kontaktnye teploobmenniki [Contact heat exchangers]. Moscow, Khimiya Publ., 1987. 256 p.
  9. Sokolov E. Ya., Zinger N. M. Struynye apparaty [Jet apparatuses]. Moscow, Energoatomizdat Publ., 1989. 352 p.
  10. Tsegel’skiy V. G. Dvukhfaznye struynye apparaty [Two-phase jet apparatuses]. Moscow, MGTU im. N. E. Baumana Publ., 2003. 408 p.
  11. Sosnin Yu. P. Kontaktnye vodonagrevateli [Contact water heaters]. Moscow, Stroyizdat Publ., 1974. 359 p.
12.11.2020