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  4. Influence of Throttling and Nozzles Switching Sequence on Indicator of Water Distribution Uniformity in Cooling Tower Model

Influence of Throttling and Nozzles Switching Sequence on Indicator of Water Distribution Uniformity in Cooling Tower Model

JEECS.
2023;
Volume 9, Number 1
: pp. 54 – 59
https://doi.org/10.23939/jeecs2023.01.054
Received: April 14, 2023
Revised: May 15, 2023
Accepted: May 22, 2023

V. Orel, O. Matsiyevska, B. Pitsyshyn, M. Tseniukh. Influence of throttling and nozzles switching sequence on indicator of water distribution uniformity in cooling tower model. Energy Engineering and Control Systems, 2023, Vol. 9, No. 1, pp. 54 – 59. https://doi.org/10.23939/jeecs2023.01.054

Authors:
  1. Vadym Orel
  2. Oksana Matsiyevska
  3. Bohdan Pitsyshyn
  4. Maksym Tseniukh
1
Lviv Polytechnic National University
2
Lviv Polytechnic National University
3
Lviv Polytechnic National University
4
Lviv Polytechnic National University

The article analyzes factors leading to non-uniformity of water distribution in cooling towers. These include imperfections in the design of pipelines and nozzles of the water distribution system of cooling towers. Previous studies conducted on a model of the water distribution system of the tower-type cooling system at Rivne Nuclear Power Plant have revealed uneven water distribution on the nozzles. Simulation of the simultaneity of nozzle activation showed that the nozzle that is activated first has the highest flow rate. Therefore, to achieve acceptable uniformity of water distribution, this nozzle was throttled using a throttling orifice plate. It has been shown that such throttling is effective even in the presence of hydrodynamic cavitation at orifice plate diameter ratios of 0.449...0.624. When four model nozzles are activated one after the other, the flow rate of the first nozzle decreases both with and without throttling. At the same time, increase in the number of working nozzles up to four does not significantly affect the flow rate of the first nozzle.

cooling tower
water distribution system
nozzle
throttling orifice plate
  1. Fedyaev, V.  L., Mazo, A. B., Morenko, I. V., Gainullin, R. F. and Gainullina R. F. (2009). On the efficiency of industrial cooling towers. News of higher educational institutions. Problems of Energy, 1-2, pp. 15-24. (in Russian)
  2. Lyakhovetskaya-Tokareva M.M. (2015). The ways of rational use of cooling towers. Bulletin of the Prydniprovsk State Academy of Civil Engineering and Architecture, 3 (204), pp. 36-43. (in Russian)
  3. Ponomarenko, V. S., Aref'ev, Ju. I. (1998). Industrial and Power Cooling Towers : Reference Guide. Jenergoatomizdat, Moskva. (in Russian)
  4. Zenovich-Leshkevich-Olpinskiy Yu., A., Shiroglazova, N. V. and Zenovich-Leshkevich-Olpinskaya, A. Yu. (2016). Improvement of Systems of Technical Water Supply with Cooling Towers for Steam Power Plants Technical and Economic Indicators Perfection. Part 1. Enеrgеtika. Proс. СIS Higher Educ. Inst. аnd Power Eng. Assoc. 59 (3), pp. 235–248. https://doi.org/10.21122/1029-7448-2016-59-3-235-248 (in Russian)
  5. Biletska, A. S., Shklyar, V. I., Dubrovska, V. V. and Borysyuk, V. D. (2011). Water Cooling Device of Cooling Tower of Cherkassky Thermal Power Station Efficiency Increase. Energy Technologies & Resource Saving. No. 3, pp. 70–73. (in Russian)
  6. Cherniuk, V. V. and Bosak, M. P. (2011). Hydraulic calculation of water distributing pipelines into cooling towers of power plants. Bulletin of Lviv Polytechnic National University: Heat Power Engineering. Environmental Engineering. Automation, No. 712, pp. 55–61. (in Ukrainian)
  7. Zenovich-Leshkevich-Olpinskiy, Yu. A., Shiroglazova, N. V. and Zenovich-Leshkevich-Olpinskaya, A. Yu. (2016). Improvement of Systems of Technical Water Supply with Cooling Towers for Heat Power Plants Technical and Economic Indicators Perfection. Part 2. Enеrgеtika. Proс. СIS Higher Educ. Inst. аnd Power Eng. Assoc. 59 (4), pp. 362–375. https://doi.org/10.21122/1029-7448-2016-59-4-362-375 (in Russian)
  8. Presman, M. R. (2005). Hydraulic schemes of water distribution systems of tower cooling towers of TPPs and NPPs (Doctor of philosophy thesis). GOU VPO “Sankt-Peterburg State Polytechnic University”, S.-Peterburg. (in Russian)
  9. Project of the physical model of the circulating water supply system: Contract No. 7001 / Lviv Polytechnic National University. No. DR 0103U004631. Lviv, 2003. (in Ukrainian)
  10. Wang, J. (2011) Theory of flow distribution in manifolds. Chemical Engineering Journal, 168 (3), 1331–1345. https://doi.org/10.1016/j.cej.2011.02.050
  11. Orel, V. I. (2017). Determination of pressure losses between water distribution nodes on the main pipeline of the water distribution system of the cooling tower. Winter scientific results of 2017 (December 25, 2017, Dnipro): Abstracts of II International Scientific and Practical Conference. Part 1, pp. 10–16. (in Ukrainian)
  12. Mуsak, J. S., Kuznetsova, M. Y., Rymar, T. E. and Matiko, F. D. (2017). Enhancement of reliability and efficiency of cooling towers of nuclear power plants. Proceedings of Odessa Polytechnic University, 3 (53), 54–58. https://doi.org/10.15276/opu.3.53.2017.07
  13. Orel, V. I. (2019). Prerequisites of decrease of non-uniformity of water distribution by model sprinklers. Problems of protection and rational exploitation (May 23-24, 2019, L’viv): Proceedings of the 18th International Scientific-Practical Conference “Resources of Natural Waters in Carpatian Region”. Pp. 205–206. (in Ukrainian)
  14. Bilyy, R. V. (2019). Regulation of the liquid flow divider by throttling. Physical Processes in Energy, Ecology and Construction (April 11-12, 2019, Odessa): Abstracts of the Second All-Ukrainian Scientific and Practical Conference of Higher Education Applicants and Young Scientists, pp. 34–36. (in Ukrainian)
  15. Miheev, O. P. (1990). Design of sanitary fittings for buildings : Tutorial. Stroyizdat, Moscow. (in Russian)
  16. Bilyy, R. V. and Orel, V. I. (2019). Ensuring the acceptable non-uniformity of water distribution by the water distribution system of the cooling tower. Pure water. Fundamental, applied and industrial aspects (November 14-15, 2019, Kyiv): Proceedings of the VІ International Scientific and Technical Conference. pp. 70–72. (in Ukrainian)
  17. Orel, V. I. and Konyk, T. Z. (2020). Hydrodynamic cavitation in nozzles of the model of the water distribution device of the cooling tower. Problems of protection and rational exploitation (October 8-9, 2020, L’viv): Proceedings of the 19th International Scientific-Practical Conference “Resources of Natural Waters in Carpatian Region”. Pp. 137–140. (in Ukrainian)
  18. Gerliga, В., Miroshnichenko, S., Kovall, V., Emets, O., Miroshnichenko, A. and Chuprynin, S. (2013). Analysis of disturbing forces reasons provoken the recirculation pipelines enhanced vibration of sprinkler system of NPP’ power unit. Journal of Mechanical Engineering NTUU “Kyiv Polytechnic Institute”. No. 67, pp. 207–213. (in Russian)
  19. ISO 7089:2000. Plain washers – Normal series – Product grade A.
  20. Bosak, N., Cherniuk, V., Matlai, I. and Bihun, I. (2019). Studying the mutual interaction of hydraulic characteristics of water distributing pipelines and their spraying devices in the coolers at energy units. Eastern-European Journal of Enterprise Technologies. 3(8 (99)), 23–29. https://doi.org/10.15587/1729-4061.2019.166309