Examining a cavitation heat generator and the control method over the efficiency of its operation

Authors

DOI:

https://doi.org/10.15587/1729-4061.2017.108580

Keywords:

cavitation, rotary-impulse device, cavitational heat generator, compensation of oscillatory energy waves, dynamic vibration compensator

Abstract

The cavitation heat generator for decentralized heating of industrial buildings and facilities was examined and implemented for actual operation. On this basis, a thermal system for decentralized heating of buildings was designed and studied. The circuit of the thermal system differs by the following feature: two connected cavitation heat generators are connected in series for heating of the liquid. At the same time, the heated liquid passes through a heat generator operating at high frequency, then through a heat generator operating at lower frequency. In the generator with high frequency, smaller cavitation embryos are excited, which increase in size in the generator with low frequency. This leads to increased impulses of cavitation pressure and increases the effect of cavitation.

On this basis, a heat system for decentralized heating of buildings was designed, and studied, with its energy efficiency. To increase energy efficiency of the thermal system with cavitation heat generators, their sequential installation was proposed. The heated liquid must pass successively through a heat generator operating at high frequency, then through a heat generator operating at lower frequency.

The efficiency of the system developed exceeds 18 % compared to the system of centralized heating by natural gas, which is a convincing prospect of use.

A method for effective control over the cavitation process during operation of a heat generator was developed, based on the suppression of waves of oscillatory energy of the object. The method is based on direct measurements of vibrations – a parameter characterizing the process of cavitation. Approbation of the method for control over effectiveness of the cavitation process was carried out by measuring the vibrations at various temperatures of liquid at the outlet.

Author Biographies

Viktor Ved, Ukrainian State University of Chemical Technology Gagarina ave., 8, Dnipro, Ukraine, 49005

Senior Lecturer

Department of equipment of chemical plants

Valeriy Nikolsky, Ukrainian State University of Chemical Technology Gagarina ave., 8, Dnipro, Ukraine, 49005

Doctor of Technical Sciences, Professor

Department of Energetic

Olga Oliynyk, Ukrainian State University of Chemical Technology Gagarina ave., 8, Dnipro, Ukraine, 49005

PhD, Associate Professor

Department of Computer-integrated Technologies and Metrology

Alexander Lipeev, LLC "Ukravia" Stepovoho Frontu str., 2, Pavlograd, Ukraine, 51400

General Director 

References

  1. Zhu, J., Hou, X., Niu, X., Guo, X., Zhang, J., He, J. et. al. (2017). The d-arched piezoelectric-triboelectric hybrid nanogenerator as a self-powered vibration sensor. Sensors and Actuators A: Physical, 263, 317–325. doi: 10.1016/j.sna.2017.06.012
  2. Demidova, Yu. E. (2012). Issledovanie protsessov glubokoy ochistki neftesoderzhashchih stochnyh vod v gidro- dinamicheskom kavitatore rotornogo tipa. Visnyk NTU «KhPI». Seriia: Khimiia, khimichna tekhnolohiia ta ekolohiia, 63 (969), 164–173.
  3. Prokof'ev, V. V. (2011). O vozniknovenii avtokolebaniy v struynoy zavese, razdelyayushchey oblasti s razlichnym davleniem. Vestnik Nizhegorodskogo universiteta im. N. I. Lobachevskogo, 4 (3), 1062–1064.
  4. Promtov, M. A. (2001). Pul'satsionnye apparaty rotornogo tipa: teoriya i praktika. Moscow: Mashinostroenie-1, 260.
  5. Merkle, T. (2014). Prevention of Cavitation and Wear Out. Damages on Pumps and Systems, 31–70. doi: 10.1016/b978-0-444-63366-8.00003-6
  6. Rudolf, P., Kubina, D., Hudec, M., Kozák, J., Maršálek, B., Maršálková, E., Pochylý, F. (2017). Experimental investigation of hydrodynamic cavitation through orifices of different geometries. EPJ Web of Conferences, 143, 02098. doi: 10.1051/epjconf/201714302098
  7. Choi, J.-K., Ahn, B.-K., Kim, H.-T. (2015). A numerical and experimental study on the drag of a cavitating underwater vehicle in cavitation tunnel. International Journal of Naval Architecture and Ocean Engineering, 7 (5), 888–905. doi: 10.1515/ijnaoe-2015-0062
  8. Mardiana, A., Riffat, S. B. (2013). Review on physical and performance parameters of heat recovery systems for building applications. Renewable and Sustainable Energy Reviews, 28, 174–190. doi: 10.1016/j.rser.2013.07.016
  9. Zaporozhets, E. P., Zibert, G. K., Artemov, A. V., Kholpanov, L. P. (2004). Vortex and cavitation flows in hydraulic systems. Theoretical Foundations of Chemical Engineering, 38, 243–252.
  10. Promtov, M. A., Akulin, V. V. (2006). Mehanizmy generirovaniya tepla v rotorno-impul'snom apparate. Vestnik TGTU, 11 (2A), 364–369
  11. Promtov, M. A. (2001). Issledovanie gidrodinamicheskih zakonomernostey raboty rotorno-impul'snogo apparata. Theoretical Foundations of Chemical Engineering, 35, 103–106.
  12. Savchenko, Yu. N., Savchenko, G. Yu. (2006). Pristenochnaya kavitatsiya na vertikal'noy stenke. Prykladna hidromekhanika, 8 (4), 53–59.
  13. Müller, M., Zima, P., Unger, J., Živný, M. (2012). Design of experimental setup for investigation of cavitation bubble collapse close to a solid wall. EPJ Web of Conferences, 25, 02017. doi: 10.1051/epjconf/20122502017
  14. Tsaryov, R. A. (2010). Optoelectronic device for the control of hydrocarbon fuel cavitation treatment. Vestnik of Samara University. Aerospace and Mechanical Engineering, 1 (21), 195–201
  15. Dobeš, J., Kozubková, M., Mahdal, M. (2016). Identification of the noise using mathematical modelling. EPJ Web of Conferences, 114, 02017. doi: 10.1051/epjconf/201611402017
  16. Suchkov, G. M., Taranenko, Y. K., Khomyak, Y. V. (2016). A Non-Contact Multifunctional Ultrasonic Transducer for Measurements and Non-Destructive Testing. Measurement Techniques, 59 (9), 990–993. doi: 10.1007/s11018-016-1081-3
  17. Hattori, S., Hirose, T., Sugiyama, K. (2010). Prediction method for cavitation erosion based on measurement of bubble collapse impact loads. Wear, 269 (7-8), 507–514. doi: 10.1016/j.wear.2010.05.015
  18. Antsyferov, S. S., Rusanov, K. E., Afanas'ev, M. S. (2014). Obrabotka rezul'tatov izmereniy. Moscow: Ikar, 228.
  19. H’os, C. (2017). Fluid Machinery Temporary. Budapest University of Technology and Economics Dept. Hydrodynamic Systems, 164.
  20. Shkapov, P. M. (2010). Sozdanie pul'siruyushchih potokov zhidkosti na osnove avtokolebaniy ogranichennoy iskusstvennoy gazovoy kaverny. Hranenie i pererabotka sel'hozsyr'ya, 9, 55–58.
  21. Song, X., Li, G., Yuan, J., Tian, Z., Shen, R., Yuan, G., Huang, Z. (2010). Mechanisms and field test of solution mining by self-resonating cavitating water jets. Petroleum Science, 7 (3), 385–389. doi: 10.1007/s12182-010-0082-0
  22. Oliynyk, O., Taranenko, Y., Shvachka, A., Chorna, O. (2017). Development of auto­oscillating system of vibration frequency sensors with mechanical resonator. Eastern-European Journal of Enterprise Technologies, 1 (2 (85)), 56–60. doi: 10.15587/1729-4061.2017.93335

Downloads

Published

2017-08-31

How to Cite

Ved, V., Nikolsky, V., Oliynyk, O., & Lipeev, A. (2017). Examining a cavitation heat generator and the control method over the efficiency of its operation. Eastern-European Journal of Enterprise Technologies, 4(8 (88), 22–28. https://doi.org/10.15587/1729-4061.2017.108580

Issue

Vol. 4 No. 8 (88) (2017): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

License

Copyright (c) 2017 Viktor Ved, Valeriy Nikolsky, Olga Oliynyk, Alexander Lipeev

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.

A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.