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Vibrations in engineering and technology

space SCIENTIFIC JOURNALS OF VINNITSA NATIONAL AGRARIAN UNIVERSITY

Issue №: 1(116)

Published: 2025.03.31
DOI: 10.37128/2306-8744-2025-1


Description:
The journal deals with the problems of vibration technologies and machines, mathematical methods of vibration process studies, information on design and technological development, presents teaching and methodological aspects of teaching in the Higher School of Applied Sciences, where vibration machines and technologies are studied.

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INVESTIGATION OF AIRFLOWS IN A DRYING CHAMBER WITH TOP HEAT CARRIER SUPPLY

DOI: 10.37128/2306-8744-2025-1-17
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Tykhtylo Bohdan – graduate, specializing 133 “Industrial Engineering”, Department of Mechanical and Electrical Engineering, Poltava State Agrarian University (Skovorody Str. 1/3, Poltava, Ukraine, 36003, e-mail: bohdan.tykhtylo@pdau.edu.ua, ORCID: 0009-0009-6277-0346).

 

Annotation

The study of airflow patterns in a drying chamber with top heat carrier supply is a crucial aspect of optimizing drying processes, as it influences the uniformity of heat distribution, heat exchange efficiency, and energy consumption. The study considers the impact of key parameters such as heat carrier velocity, particle residence time in the heat carrier flow, the inclination angle of the outer row blades, the structural features of the chamber, and the arrangement of drying material on drying efficiency. It has been established that proper organization of the airflow contributes to reducing heat losses and ensuring uniform material heating, which, in turn, enhances the quality of the final product. Notably, optimizing the velocity profiles of the heat carrier in the drying chamber resulted in a productivity increase of approximately 10%. The conducted simulations identified areas with potential stagnation zones, where air circulation is insufficient, potentially leading to uneven drying of the product. The obtained results can be utilized to improve the design of drying chambers and optimize the technological drying regimes for various materials. Based on experimental data, velocity distribution curves ϑ of the heat carrier flow were constructed for a drying chamber with a radius R at heights of 1 m, 2 m, and 3 m in the vertical direction from the outlet section of the air distributor. Analysis of the results indicates that the implementation of top heat carrier supply can provide better control over the drying process, making this method a promising approach for industrial applications.

Keywords: drying, dry milk, spraying, disc atomizer, drying chamber.

List of references

1. Ullum, T. (2006). Simulation of a spray dryer with rotary atomizer: the appearance of vortex breakdown. In: Proceedings of the 15th International Drying Symposium. 20–23.

2. Tufekchi, V. I., Veresotskyi, Yu. I. (2021). Doslidzhennia verkhnoho zhaliuziinoho rozpodilennia teplonosiia ta vyznachennia efektyvnykh parametriv sushinnia v kompleksakh rozpyliuvalnoho typu [Investigation of the upper louver distribution of the coolant and determination of effective drying parameters in spray-type complexes]. Kharchova Promyslovist NUKhT [Food Industry NUFT], № 30, 96–109. [in Ukrainian].

3. Dubkovetskyi, I. V., Malezhyk, I. F., Strelchenko, L. V., Yevchuk, Ya. V. (2015). Doslidzhennia kinetyky konvektyvno-termoradiatsiinoho sushinnia [Study of the kinetics of convective-thermal-radiation drying]. Naukovi pratsi Odeskoi natsionalnoi akademii kharchovykh tekhnolohii [Scientific works of the Odesa National Academy of Food Technologies], Vyp. 47(2), 18–22. [in Ukrainian].

4. Gauvin, W. H., Katta, S. Basic concepts of spray dryer design. AlChE Journal, Vol. 22, No. 4, 713–724. 

5. Jin, Y., Chen, X.D. (2009). Numerical study of the drying process of different sized particles in an industrial-scale spray dryer. Drying Technol, 27 (3), 371–381.

6. Kim, E.H.J., Dong Chen, X., Pearce, D. (2003). On the mechanisms of surface formation and the surface compositions of industrial milk powders. Drying Technol, 21 (2), 265–278.

 

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About journal

Topics of the journal:

The journal "Vibrations   in engineering  and technology" presents materials on the following issues

• Theory of processes and machines
• Mechanical Engineering and materialprocessing
• Processing and food production

The journal "Vibrations in Engineering and Technologies" is included in the list of technical scientific publications of Ukraine

(Category "B", Order of the Ministry of Education and Science of Ukraine dated July 2, 2020 No. 886)

Old version of the site: http://vibrojournal.vsau.edu.ua/

The journal "Vibrations in Engineering and Technology" is indexed by the following databases and catalogs:

 

 

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Key information:
ISSN (print): 2306-8744
DOI: 10.37128/2306-8744

The certificateof massmedia State registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University

Kind of publication: journal
Type of publication : Scientific
Publication status: Domestic
Year of founding:
Periodicity: 4 times a year
Extent: 18.75 nominal printed pages
ISSN: 2306-8744 (printed version), (online)
Language of edition  : (mixed languages) Ukrainian, English
The scope of the distribution and the category of readers: national, foreign, teaching staff, scientists, businessmen.
Periodical is included in the list of scientific professional editions of Ukraine approved by the Order of Ministry of Education and Sciences of Ukraine from 21.12.2015 No. 1328.
The journal "Vibrations in engineering and technology" is included in the "Catalogue of periodicals of Ukraine".
Journal subscription can be executed in each post office department.
 Subscription Index is  99720.

 

Old version of site: http://vibrojournal.vsau.edu.ua/

History of journal:

In June 1994 the 2nd International Scientific and Technical Conference "Application of vibrations for technological purposes" was organized on the basis of Vinnytsia State Agricultural Institute. Leading experts in this field, noting the significant contribution to the school of Vibration Engineering under the leadership of P. S. Bernyk, proposed to create a professional all-Ukrainian scientific and technical journal "Vibration in engineering and technology..The journal was foundedat Vinnytsia State Agricultural Institute and P.S. Bernyk was elected to be the chief editor .
For all these years (since 1994) theJournal "vibration in engineering and technology" published  94 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Kaletnik H.M  PhD , professor, academician NAAS is the chief editor of the "Vibrations in engineering  and Technology"
The journal "Vibration in Engineering and technology", which has no analogues on the territory of Ukraine, is well known abroad.