Improving the operation of a drum grain dryer with justification of the low-temperature mode parameters

Authors

DOI:

https://doi.org/10.15587/1729-4061.2020.213867

Keywords:

cereal crops, grain dryer, drum container, kinetics, combined mechanical vibration exciter, vibration intensity, vibration speed

Abstract

The proposed engineering and technological solutions are aimed at improving the operation of a low-temperature drum grain dryer by using a combined mechanical vibration exciter, with the further justification of low-temperature regime parameters. Existing vibration technologies imply the high-temperature drying of food grains with further utilization of spent heat carrier for reheating it. In this case, the high-temperature drying of cereals and seed crops (grains, onions, etc.) does not make it possible to maintain high germination, emphasizing the need for low-temperature treatment, which, in this case, reduces the efficiency of spent heat carrier. Therefore, to improve the efficiency of the drying process and technology, it has been proposed to employ vibration low-frequency technologies that ensure seed quality.

The trajectory and the kinetic energy of the drum container with a combined mechanical vibration exciter have been calculated for the improved vibratory drum grain dryer. The rational vibration intensity for seed drying providing the following kinetic characteristics has been established: vibration speed, to 0.03 m/s; vibration acceleration, 30 m/s2; vibration intensity, 2.6 m2/s2; at amplitude vibration not exceeding 2 mm. It has been also established that the intense warming of a barley layer occurs at a temperature of 50 °C and a humidity of 13.5 %, the final temperature is 42.4 °C, and, at 40 °C, is, accordingly, 35.4 °C. This has confirmed that the low-temperature drying of barley seeds of the variety "Stalker" (Ukraine) takes place during the periods of constant and falling drying speed characterized by a high level of germination (95...93 %)

Author Biographies

Vadim Paziuk, Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine Bulakhovskoho str., 2, Kyiv, Ukraine, 03164

Doctor of Technical Sciences, Associate Professor, Leading Researcher

Department of Heat and Mass Transfer in Heat Technologies

Volodymyr Dub, Kharkiv State University of Food Technology and Trade Klochkivska str., 333, Kharkiv, Ukraine, 61051

PhD, Associate Professor

Department of Hotel, Restaurant Business and Tourism

Oleg Tereshkin, Kharkiv State University of Food Technology and Trade Klochkivska str., 333, Kharkiv, Ukraine, 61051

Doctor of Technical Sciences, Professor

Department of Hotel, Restaurant Business and Tourism

Andreii Zahorulko, Kharkiv State University of Food Technology and Trade Klochkivska str., 333, Kharkiv, Ukraine, 61051

PhD, Associate Professor

Department of Processes, Devices and Automation of Food Production

Igor Lebedynets, Kharkiv State University of Food Technology and Trade Klochkivska str., 333, Kharkiv, Ukraine, 61051

PhD, Associate Professor

Department of Power Engineering, Engineering and Physics and Mathematics

Dima Pankov, National University of Food Technology Volodymyrska str., 68, Kyiv, Ukraine, 01601

PhD

Department of Automation and Computer Technology of Control Systems

Anna Hotvianska, Dnipro State Agrarian and Economic University Serhiya Yefremova str., 25, Dnipro, Ukraine, 49600

PhD

Department of Plant Production

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Published

2020-10-31

How to Cite

Paziuk, V., Dub, V., Tereshkin, O., Zahorulko, A., Lebedynets, I., Pankov, D., & Hotvianska, A. (2020). Improving the operation of a drum grain dryer with justification of the low-temperature mode parameters. Eastern-European Journal of Enterprise Technologies, 5(8 (107), 24–30. https://doi.org/10.15587/1729-4061.2020.213867

Issue

Vol. 5 No. 8 (107) (2020): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

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Copyright (c) 2020 Vadim Paziuk, Volodymyr Dub, Oleg Tereshkin, Andreii Zahorulko, Igor Lebedynets, Dima Pankov, Anna Hotvianska

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