THE INFLUENCE OF TECHNOLOGICAL PARAMETERS OF THE EXTRUSION PROCESS AND TECHNICAL PARAMETERS OF AN EXTRUDER WITH ELASTIC SCREW ELEMENTS ON THE EXPANSION INDEX OF THE EXTRUDATE
Dmytro Kondratyuk – PhD, Associate Professor of the Department of Agroengineering and Technical Services of the Vinnytsia National Agrarian University (3, Solnyshchaya St., Vinnitsa, Ukraine, 21008).
Victor Dmitrenko – Research Fellow, Potato Institute of UAAS (st. Chkalova, 22, Nemeshaevo, Kiev region, 07853)
The processing of feed by extrusion improves the level of absorption by animals. In the extruder, due to frictional forces, the grain mass is heated to a temperature of 120 ... 150 ° C and acquires thermoplastic properties. Due to the transition of the heated mass from the high-pressure zone to the atmospheric zone, adiabatic expansion occurs, as a result of which the volume of the extrudate increases due to the destruction of the granular structure of starch at the cellular level. The extrudate acquires a microporous structure, which contributes to a more complete absorption of nutrients by the animal body. The purpose of the work is to determine the rational values of the factors that most significantly influence the extrusion process and to evaluate the degree of their influence on the extrusion index of the grain mixture of cereals. The studies were performed using a sample of the model extruder section structure, the coils of the screw extruder can oscillate along its axis. A blend of corn, barley and winter wheat in a 5: 3: 2 ratio was used as the study object. The effect of the extruder parameters and modes on the extrudate expansion index was studied using the multivariate experiment planning method. The extrudate expansion index was defined as the ratio of the extrudate diameter to the diameter of the die. To study the process, the following factors were selected that most significantly influence the extrusion process and the extrudate expansion index: die diameter X1 (d, mm), relative humidity of the grain mixture X2 (W,%) and temperature of the extrusion process X3 (T, 0C). The levels of variation of the factors were as follows (initially recorded the zero level of factors, and after the interval of variation): X1 (6; 2 mm), X2 (16; 4%) and X3 (135; 25 0C). As a result of the conducted researches the following rational parameters and modes of operation of the extruder were established: diameter of die d = 4.9… 5.9 mm; humidity of grain mixture W = 17,7… 20%; the temperature of the extrusion process T = 140… 145 0C, and a die diameter of 4.9 ... 5, 9mm.
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131 - Applied Mechanics
132 - Materials Science
133 - Industry engineering
141 - Power engineering, electrical engineering and electromechanics
208 - Agricultural engineering
The magazine "Engineering, Energy, Transport AIC" is included in the list of scientific professional editions of Ukraine on technical sciences
(Category "Б", Order of the Ministry of Education and Science of Ukraine dated 02.07.2020 №886)
Certificate of state registration of mass media: No. 21906-11806 P dated 03/12/2016.
Founder of the journal: Vinnytsia National Agrarian University
Editor-in-chief: Tokarchuk Olexiy A.
Ph.D., Assoc., VNAU (Vinnytsia)
Deputy Editor-in-Chief: Veselovska Nataliia R.
Doctor of Technical Sciences, Full Prof., VNAU (Vinnytsia)
Executive Secretary: Polevoda Yuri A.
Ph.D., Assoc., 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
Bulgakov V.M. - Doctor of Technical Sciences, Full Professor, Acad. NAAS, National University of Life and Environmental Sciences of Ukraine
Iskovich-Lototsky R.D. - Doctor of Technical Sciences, Full Professor, Vinnytsia National Technical University
Bandura V. N. - Ph.D., Full professor, Vinnytsia National Agrarian University
Polevoda Yu.A. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Tsurkan A.V. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Ivanchuk Y.V. - Ph.D., Associate Professor, Vinnytsia National Technical University
Jordan Todorov Maximov - Doctor of Technical Sciences, Full Professor, Technical University of Gabrovo (Bulgaria)
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, Russian, 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".
Subscription to the journal can be issued in each post office. The subscription index is 99720.
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).