Issue №: 3(114)
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.
EVALUATION OF THE EFFICIENCY OF THE WALNUT DRYING PROCESS IN A CONVECTIVE-VIBRATING DRYER
Tsurkan Oleh – D.Eng.Sc., 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
Spirin Anatoly - candidate of technical sciences, associate professor, teacher of Separate structural subdivision «Ladyzhyn vocational college of Vinnytsia National Agrarian University» (Kravchik Petro St., 5, Ladyzhyn, Vinnytsia Region, Ukraine, 24321, e-mail: spirinanatoly16@gmail.com, https://orcid.org/0000-0002-4642-6205).
Rutkevych Volodymyr – Candidate of Technical Sciences, Associate Professor of the Department of machinery and equipment for agricultural production of Vinnytsia National Agrarian University (Soniachna St. 3, Vinnytsia, 21008, Ukraine, +380962700443, e-mail: v_rut@ukr.net, https://orcid.org/0000-0002-6366-7772).
Didyk Andrii – postgraduate student of the Department of Engineering Mechanics and Technological Processes in the Agro-Industrial Complex of the Faculty of Engineering and Technology of Vinnytsia National Agrarian University (3 Sunny Street, Vinnytsia, 21008, Ukraine, +380972830537, anddidyk99@gmail.com, https://orcid.org/0000-0002-0524-0017)
The drying operation is the most energy-intensive of all technological operations of post-harvest processing of plant agricultural products. Improving the energy efficiency of drying equipment is a top priority in planning and implementing technologies for post-harvest processing of agricultural products, including walnuts. There are a number of ways to increase the efficiency of the drying process, therefore, even at the stage of theoretical and laboratory research, it is important to evaluate the proposed measures and means. Analysis of recent studies and publications shows that the assessment of the efficiency of the drying process was carried out, in most cases, according to two criteria – the coefficient of efficiency and the specific consumption of thermal energy for moisture evaporation. In some cases, along with the energy analysis, the exergetic analysis was also performed. Exergetic analysis allows you to look for ways to increase the efficiency of the drying plant, analyzing the causes of the loss of exergy in the units and substantiating recommendations for improving the cycles of thermal power plants. Laboratory and production tests for drying walnuts were carried out on a convective-vibration dryer. At the same time, the following energy indicators were achieved: the efficiency of the unit was 0.4 with a specific energy consumption for moisture evaporation of 3.91 MJ/kg. In the calculation and design of heat exchangers, including dryers elements of similarity theory are used. In the general theory and practice of heat transfer, including the study of drying processes, about two dozen criteria are used. To assess the effectiveness of the walnut drying process, it is proposed, first of all, to use the criteria of Nusselt and Reynolds. Comparison of similar criteria of two (or more) processes or structural elements can give a decision on the feasibility of using a certain element of the system.
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About 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:
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/
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.
