BACKGROUND FOR BUILDING A MATHEMATICAL MODEL OF THE PUMPKIN SEEDS FILTER DRYING PROCESS
Oleh Tsurkan – doctor of technical sciences, associate professor of the Department of technological processes and equipment of processing and food industries of Faculty of Engineering and Technology of Vinnytsia National Agrarian University, director of Separated structural unit «Ladyzhyn Professional College of Vinnytsia National Agrarian University» (5, P. Kravchyka St., Ladyzhyn, Vinnytsia region, 24321, Ukraine, e-mail email@example.com. https://orcid.org/0000-0002-7218-0026).
The main objective reason for holding back the spread of such a valuable crop as pumpkin is the lack of high-quality sowing material. This is due to the imperfection of technologies for post-harvest processing of seed products, namely drying and, to a lesser extent, the separation process. The successful implementation of the drying process depends on many factors, including the properties of the material and the methods and means of implementing the process.
To create a mathematical model of the drying process for high-moisture pumpkin seeds, it is necessary to conduct a detailed review of the methods for presenting the theoretical foundations of the task. The layer of pumpkin seeds has increased cohesive and adhesive properties, a tendency to create conglomerates, sticking to the working bodies of machines. To minimize the negative effect of the physical properties of pumpkin seeds on the course of the drying process, it is advisable to apply a vibration action that increases the difference in the layer, which prevents the seeds from sticking to the working bodies. Another feature of pumpkin seeds, which complicates their successful drying, is their high initial moisture content (about 50%). Therefore, in order to reduce energy consumption at the first stage, it is advisable to remove free unbound surface moisture by the method of filtration drying. In the design practice of filtration drying, four main physical and mathematical models of filtration are used. The main disadvantage of these models is the uncertainty of individual values, in particular, the diameter of the capillaries, since a real porous medium consists of pores of different diameters and shapes. The use of vibration action significantly intensifies the filtration drying process.
 Tsurkan, O.V. (2021). Analiz vibratsiinykh tekhnichnykh zasobiv dlia sushinnia nasinnia harbuza. Vibratsii v tekhnitsi ta tekhnolohiiakh. 4 (103). 5–14. [in Ukrainian].
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 Tsurkan, O.V., Herasymov, O.O., Rymar, T.I. (2014). Hidrodynamika protsesu filtratsiinoho znevodnennia svizheochyshchenoho nasinnia harbuza z vibratsiinoiu aktyvatsiieiu. Vibratsii v tekhnitsi ta tekhnolohiiakh. 2 (74). 138-144. [in Ukrainian].
 Tsurkan, O.V., Spirin, A.V., Tverdokhlib, I.V. (2021). Vyznachennia teplofizychnykh kharakterystyk obiektiv vibratsiinoho sushinnia. Vibratsii v tekhnitsi ta tekhnolohiiakh. 3(102). 100-108. [in Ukrainian].
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 Palamarchuk, I.P., Tsurkan, O.V., Zozuliak, O.V. (2012). Intensyfikatsiia protsesiv sushinnia nasinnia za rakhunok vykorystannia vibratsiinoho ta elektroosmotychnoho efektiv. Vibratsii v tekhnitsi ta tekhnolohiiakh. 1 (65). 110–114. [in Ukrainian].
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131 - Applied Mechanics
132 - Materials Science
133 - Industry engineering
141 - Power engineering, electrical engineering and electromechanics
208 - Agricultural engineering
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Founder of the journal: Vinnytsia National Agrarian University
Editor-in-chief: Oleksii Tokarchuk - Ph.D., Associate Professor, VNAU (Vinnytsia)
Deputy Editor-in-Chief: Natalia Veselovska - Doctor of Technical Sciences, Full Prof., VNAU (Vinnytsia)
Executive Secretary: Yuriy Polevoda- Ph.D., Associate Professor, VNAU (Vinnytsia)
Members of the Editorial Board:
Tokarchuk O.A. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Veselovska N.R. - Doctor of Technical Sciences, Full Professor, Vinnytsia National Agrarian University
Polevoda Yu.A. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Jordan Todorov Maximov - Doctor of Technical Sciences, Full Professor, Technical University of Gabrovo (Bulgaria)
Bulgakov V.M. - Doctor of Technical Sciences, Full Professor, Acad. NAAS, National University of Life and Environmental Sciences of Ukraine
Hraniak V.F. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Ivanchuk Y.V. - Doctor of Technical Sciences, Associate Professor, Vinnytsia National Technical University
Iskovich-Lototsky R.D. - Doctor of Technical Sciences, Full Professor, Vinnytsia National Technical University
Kupchuk I.M. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Sevostianov I.V. - Doctor of Technical Sciences, Full Professor, Vinnytsia National Agrarian University
Spirin A.V. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Tverdokhlib I.V. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Tsurkan A.V. - Doctor of Technical Sciences, Associate Professor, Vinnytsia National Agrarian University
Yaropud V.M. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Type of publication: journal
Kind of publication: scientific
Publication status: domestic
Year of foundation: 1997
Periodicity: 4 times per year
Volume: 18-20 conv. print. sheet (А4)
ISSN: 2520-6168 (print version), (online version)
Language of publication: (mixed languages) Ukrainian, English
The sphere of distribution and category of readers: national, foreign, faculty, scientists, entrepreneurs.
The periodical edition is included to the List of scientific professional publications of Ukraine on technical sciences, approved by order of the Ministry of Education and Science of Ukraine in 05.16.2016, No. 515.
The journal "Engineering, Energy, Transport AIC" is included in the "Catalog of Ukrainian Publications".
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It was founded in 1997 under the title "Bulletin of the Vinnitsa State Agricultural Institute." According to the Decree of the Presidium of the Higher Attestation Commission of Ukraine of September 11, 1997, this publication received the status of a professional in which it is allowed to publish the main results of dissertation researches.
In 2001-2014 the journal published under the title “Collection of scientific works of Vinnytsia National Agrarian University. Series: Technical Sciences "(Certificate of State Registration of Mass Media KV No. 16644-5116 PR of 04/30/2010).
Since 2015 journal has title "Engineering, Energy, Transport AIC" (Certificate of State Registration of Mass Media No. 21906-11806 P dated 03/12/2016).