Skip to main content
SpringerLink
Log in

Movement and evaporation of water droplets under conditions typical for heat-exchange chambers of contact water heaters

  • Heat and Mass Exchange. Properties of Working Bodies and Materials
  • Published:
Thermal Engineering Aims and scope Submit manuscript

Abstract

The macroscopic regularities and integrated characteristics of the motion and evaporation of sprayed water droplets in the field of high-temperature (1100 K) combustion products under the conditions typical for water heaters of contact type (economizers) were studied using a cross-correlation complex working on the basis of panoramic optical methods (particle image velocimetry, particle tracking velocimetry, shadow photography) and high-speed (105 fps) Phantom video cameras. High-speed video recording devices with specialized software were used for continuously monitoring the motion and evaporation of droplets. Titanium dioxide nanopowder tracer particles were introduced to determine the rate of high-temperature gases. The characteristic distances covered by water droplets before their full retardation in the counter-flow of high-temperature combustion products were determined. The integrated dependences were obtained, and the main characteristics of evaporation were determined, which allow one to predict the intensity of the phase transformations of droplets (with sizes of 0.05–0.5 mm) and the distances covered by them before they completely turn in the opposite direction under the conditions corresponding to the heat-exchange chambers of contact water heaters: the vapor-droplet rate 1–5 m/s, gas flow rate 0.5–2 m/s, and gas temperature ~1100 K. Approximating expressions were derived to predict the characteristics of the processes. The performance of the economizers under study can be significantly increased by using the obtained experimental dependences, the corresponding approximating expressions, and the resulting conclusions. Conditions were determined under which the influence of phase transformations on retardation exceeds the contribution of the counter-motion and active retardation and evaporation of water droplets occur in the heat-exchange chambers of contact water heaters of typical sizes.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. L. I. Druskin, Effective Use of Natural Gas in Industrial Plants: Handbook, (Energoatomizdat, Moscow, 1992) [in Russian].

    Google Scholar 

  2. Yu. P. Sosnin, Contact Water Heaters, (Stroiizdat, Moscow, 1974) [in Russian].

    Google Scholar 

  3. V. A. Zakrevskii, “Contact water heating by off-gas in gas boilers” Nauka Tekh., No. 3, 54–62 (2007).

    Google Scholar 

  4. Yu. P. Sosnin and E. N. Bukharkin, “Choice of scheme ofboiler-room with contact water-heaters,” Prom. Energ., No. 5, 38–40 (1980).

    Google Scholar 

  5. Yu. P. Sosnin and E. N. Bukharkin, High-Effective Gas Contact Waterheaters (Stroiizdat, Moscow, 1988) [in Russian].

    Google Scholar 

  6. Yu. P. Sosnin, “Gas contact-surface water-heater for heating and hot-water supply,” Gazov. Prom., No. 5, 21–27 (1963).

    Google Scholar 

  7. I. Z. Aronov and E. N. Solodovnikova, “On quality of tap water heated in contact gas feed water heaters,” Gazov. Prom., No. 4, 21–25 (1964).

    Google Scholar 

  8. M. N. Nikitin, “Effect of water directed injection in heat geterator on the pressure of obtained vapor-gas mixture,” Prom. Energ., No. 6, 42–46 (2010).

    Google Scholar 

  9. A. M. Te, “Heat transfer condensation on the vapor of the liquid film flowing over the surface of confusor,” Energosberezh. Vodopodg., No. 6, 67–70 (2014).

    Google Scholar 

  10. M. R. Vakhitov, N. M. Nurtdinov, and A. N. Nikolaev, “Heat-and mass-transfer in contact elements of economizers of vortex type,” Vestn. Kazan. Tekhnol. Univ., No. 10, 117–124 (2010).

    Google Scholar 

  11. M. N. Nikitin, “Study of heat transfer with liquid phase in circulat channel of cooling vessel of mixing heat generator,” Tepl. Prots. Tekhn., No. 9, 404–410 (2013).

    Google Scholar 

  12. V. V. Yagov and M. V. Minko, “Heat transfer in twophase flow at high reduced pressures,” Therm. Eng. 58, 283–294 (2011).

    Article  Google Scholar 

  13. A. A. Avdeev and Yu. B. Zudin, “Kinetic analysis of intensive evaporation (method of reverse balances),” High Temper. 50, 527–535 (2012).

    Article  Google Scholar 

  14. V. V. Yagov and M. V. Minko, “Simulating droplet entrainment in adiabatic disperse-annular two-phase flows,” Therm. Eng. 60, 521–526 (2013). doi 10.1134/S0040363613070151

    Article  Google Scholar 

  15. T. M. Muratova and D. A. Labuntsov, “Kinetic analysis of evaporation and condensation processes,” Teplofiz. Vys. Temp. 7, 959–967 (1969).

    Google Scholar 

  16. P. A. Strizhak, “Influence of droplet distribution in a “water slug” on the temperature and concentration of combustion products in its wake,” J. Eng. Phys. Thermophys. 86, 895–904 (2013).

    Article  Google Scholar 

  17. G. V. Kuznetsov and P. A. Strizhak, “The motion of a manifold of finely dispersed liquid droplets in the counter flow of high temperature gases,” Tech. Phys. Lett. 40, 499–502 (2014).

    Article  Google Scholar 

  18. R. S. Volkov, G. V. Kuznetsov, and P. A. Strizhak, “Evaporation of two liquid droplets moving sequentially through high-temperature combustion products,” Thermophys. Aeromech. 21, 255–258 (2014).

    Article  Google Scholar 

  19. R. S. Volkov, G. V. Kuznetsov, and P. A. Strizhak, “Influence of the initial parameters of spray water on its motion through a counter flow of high temperature gases,” Tech. Phys. 59, 959–967 (2014).

    Article  Google Scholar 

  20. J. M. Foucaut and M. Stanislas, “Some considerations on the accuracy and frequency response of some derivative filters applied to particle image velocimetry vector fields,” Meas. Sci. Technol. 13, 1058–1071 (2002).

    Article  Google Scholar 

  21. T. Hadad and R. Gurka, “Effects of particle size, concentration and surface coating on turbulent flow properties obtained using PIV/PTV,” Exp. Therm. Fluid Sci. 45, 203–212 (2013).

    Article  Google Scholar 

  22. A. Cenedese, A. Pocecco, and G. Querzoli, “Effects of image compression on PIV and PTV analysis,” Opt. Laser Technol. 31, 141–149 (1999).

    Article  Google Scholar 

  23. E. K. Akhmetbekov, D. M. Markovich, and M. P. Tokarev, “Study of the PTV method with individual particle correlation correction,” Vychisl. Tekhnol. 15, 57–72 (2010).

    MATH  Google Scholar 

  24. T. V. Chagovets and S. W. Van Sciver, “A study of thermal counterflow using particle tracking velocimetry,” Phys. Fluids 23, 107102 (2011).

    Article  Google Scholar 

  25. D. Damiani, E. Meillot, and D. A. Tarlet, “Particletracking-velocimetry (PTV) investigation of liquid injection in a DC plasma jet,” J. Therm. Spray Technol. 23, 340–353 (2014).

    Article  Google Scholar 

  26. S. Markus, S. Pentti, N. Tuomas, and N. Jouko, “Recognition of highly overlapping ellipse-like bubble images,” Meas. Sci. Technol. 16, 1760–1770 (2005).

    Article  Google Scholar 

  27. Y. K. Akhmetbekov, S. V. Alekseenko, V. M. Dulin, D. M. Markovich, and K. S. Pervunin, “Planar fluorescence for round bubble imaging and its application for the study of an axisymmetric two-phase jet,” Exp. Fluids 48, 615–629 (2010).

    Article  Google Scholar 

  28. V. M. Dulin, D. M. Markovich, and K. S. Pervunin, “The optical principles of PFBI approach,” in Proc. 7th Int. Symp. on Measurement Techniques for Multiphase Flows. AIP Conf. Proc., No. 1428, 217–224 (2012). doi 10.1063/1.369470910.1063/1.3694709

    Google Scholar 

  29. J. Janiszewski, “Measurement procedure of ring motion with the use of high speed camera during electromagnetic expansion,” Metrol. Meas. Syst. 19, 797–804 (2012).

    Google Scholar 

  30. J. Janiszewski, “Ductility of selected metals under electromagnetic ring test loading conditions,” Int. J. Solids Struct. 49, 1001–1008 (2012).

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Tomsk National Research Polytechnical University, pr. Lenina 30, Tomsk, 634050, Russia

    R. S. Volkov, G. V. Kuznetsov & P. A. Strizhak

Authors
  1. R. S. Volkov
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. G. V. Kuznetsov
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. P. A. Strizhak
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to P. A. Strizhak.

Additional information

Original Russian Text © R.S. Volkov, G.V. Kuznetsov, P.A. Strizhak, 2016, published in Teploenergetika.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Volkov, R.S., Kuznetsov, G.V. & Strizhak, P.A. Movement and evaporation of water droplets under conditions typical for heat-exchange chambers of contact water heaters. Therm. Eng. 63, 666–673 (2016). https://doi.org/10.1134/S004060151609007X

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S004060151609007X

Keywords

Search

Navigation