Optimization mathematical model of a contact air cooler for a mine turbocompressor

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Authors:


O.V.Zamytskyi, orcid.org/0000-0002-8113-6369, Kryvyi Rih National University, Kryvyi Rih, Ukraine,   e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..uа

O.V.Ilchenko*, orcid.org/0000-0001-7167-7308, Kryvyi Rih National University, Kryvyi Rih, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

N.O.Holiver, orcid.org/0000-0002-9252-2839, Kryvyi Rih National University, Kryvyi Rih, Ukraine, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

N.V.Bondar, orcid.org/0000-0002-8713-265X, Kryvyi Rih National University, Kryvyi Rih, Ukraine, е-mail:  This email address is being protected from spambots. You need JavaScript enabled to view it.

* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.


повний текст / full article



Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2023, (5): 085 - 091

https://doi.org/10.33271/nvngu/2023-5/085



Abstract:



Purpose.
Establishing the dependencies of rational parameters of turbocompressor contact air coolers on the operating mode and initial conditions.


Methodology.
The methods of analytical research, mathematical modeling, physical modeling, and mathematical statistics were used in the study.


Findings.
As a result of the research, an optimization mathematical model of the mine turbocompressor air cooler was developed, which allows establishing its rational parameters depending on the initial conditions and operating modes of the turbocompressor. The adequacy of the theoretical studies was proved on a specially designed experimental setup. The obtained dependences make it possible to minimize the theoretical flow rate at the inlet to the uncooled section of the turbocompressor, which reduces the specific energy consumption for the compressed air production.


Originality.
For the the first time, a method has been developed for determining the rational parameters of contact air coolers when the initial temperature of water, air, and air pressure changes, which allows developing a methodology for the constructive calculation of the contact cooling system of mine turbocompressors.


Practical value.
Compressed air is widely used in all industries. It is one of the most common energy carriers in industrial enterprises, and the devices associated with its distribution and processing are an energy-intensive complex industrial energy system; the level of its perfection depends on the performance of technological processes that use compressed air. Compressed air is widely used in the mining industry (ore mining and fuel production). Compressed air is produced by turbocompressors. To increase the efficiency of the compressor, compressed air coolers are used. A significant weakness of the standard compressor cooling system is the rapid contamination of the heat exchange surfaces of air coolers with scale layers, which leads to a decrease in their efficiency and an increase in the specific energy consumption for compressed air production. This disadvantage is not found in the Venturi tube – centered droplet separator contact air coolers. As a result of the study, the dependencies were obtained and used to develop a methodology for the constructive calculation of contact air coolers for a mine turbocompressor.



Keywords:
mathematical model, Venturi tube, contact air cooler, cooling, compressed air, turbocompressor

References.


1. Saidur, R., Rahim, N. A., & Hasanuzzaman, M. (2010). A review on compressed-air energy use and energy savings. Renewable and sustainable energy, 4, 1135-1153. https://doi.org/10.1016/j.rser.2009.11.013.

2. Baranovska, M. L., Petrenko, I. E., & Baranovskyi, V. D. (2019). Analysis of electrical energy consumption by compressor units at iron ore mines in Ukraine. Science progress in European countries: new concepts and modern solutions, 102-113. Retrieved from http://www.tsatu.edu.ua/ettp/wp-content/uploads/sites/25/shtutthard-hermanyja-28.02.19-kovalov-s.-660-666_compressed.pdf#page=102.

3. Michael, L., & Stowe, P. E. (2017, May). Compressed Air Basics. American Institute of ChemicalEngineers. Retrieved from https://www.aiche.org/sites/default/files/cep/20170540.pdf.

4. Fedorov, A. G. (2013). Compressor stations and compressor installations. Odesa: Odesa National Academy of Food Technologies. Retrieved from https://docplayer.net/39769646-Fedorov-o-g-kompresorni-stanciyi-ta-kompresorni-ustanovki.html.

5. Bulat, A. F., Kirik, G. V., & Bondarenko, G. A. (2016). Compressor installation in technologies for the production of carbohydrates: monograph. Sumy: Sumy State University. ISBN 978-966-657-643-2.

6. Akhmerov, M. S. (2015). Combined cooling of centrifugal compressors. First Independent Scientific Journal, 1, 5-14. Retrieved from https://cyberleninka.ru/article/n/kombinirovannoe-ohlazhdenie-tsentrobezhnyh-kompressorov/viewer.

7. Konovalov, D. V., & Kobalava, G. O. (2018). Application of contact cooling of air by an aerothermopressor in the cycle of a gas turbine installation. Refrigeration engineering and technology, 54(5), 62-67. https://doi.org/10.15673/ret.v54i5.1248.

8. Khatamova, D. N., Abduazizov, N. A., & Juraev, R. U. (2021). Improvement of the cooling system of mine reciprocating compressor units. Innovative technology, 1(41).

9. Tregubov, V. A., Zamytskyi, O. V., & Litovko, B. M. (2015). Choice of design parameters of contact air coolers of mine turbocompressors. Collection of scientific works of the “Research Mining Institute” of the State Higher Educational Institution “Kryvyi Rih National University”, 55, 272-280.

10. Zamytskyi, O. V., & Lider, M. Y. (2016). Research of the ways to increase the energy efficiency of compressed air production in mine compressor units. Mining journal, 43, 175-180.

 

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ISSN (print) 2071-2227,
ISSN (online) 2223-2362.
Journal was registered by Ministry of Justice of Ukraine.
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