Energy Assessment of the Pneumatic Sieve Separator for Agricultural Crops

Mykhailov, Yevhen; Задосна, Н.О.; Постникова, Марина Викторовна; Педченко, Г.; Khmelovskyi, Vasyl; Bondar, Mariia; Ionichev, Aleksey; Kozdęba, Michał; Tomaszewska-Górecka, Wioletta

doi:10.2478/agriceng-2021-0012

Cited by 9 publications

(4 citation statements)

References 26 publications

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“…The important issue is to ensure the uniform speed of the airflow and the pressure in the cross-section of the sorting chamber. Additional means are used to ensure a uniform airflow rate, but they usually form resistance to the airflow, which causes higher grain cleaning and sorting energy costs [6,40].…”

Section: Discussionmentioning

confidence: 99%

Determination of Optimal Technological Parameters for Sorting Wheat Grains in Chambers of Different Constructions

Vaiciukevičius,

Jasinskas,

Jotautienė

et al. 2023

Processes

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In order to extend grain’s storage time and ensure its quality, it is necessary to sort and clean it. The aim of this study was to justify the rational shape of the sorting chamber and the optimal technological parameters for the sorting of wheat grains in airflow. This study used newly designed grain sorting chambers with constant, widening, and narrowing cross-sections for the airflow sorting of “Skagen” wheat grain. The aerodynamic properties of wheat grains were investigated when moisture was at 14 ± 2.0%. The grain flow rate in the chambers varied from 4 to 12 kg min−1 every 2 kg min−1. In addition, the airflow velocity varied from 8 to 12 m s−1 every 1 m s−1. The tilt angle of the constant cross-section camera was increased to 5°. Experimental studies have determined a terminal airflow velocity of 11.53 m s−1 for wheat grains. At the terminal airflow velocity, the grain flight coefficient was obtained to be about 0.074. These studies showed that the narrowing chamber is preferable for lower grain flow rates compared to the constant cross-section of the chamber. The widening chamber requires a lower airflow velocity to achieve the same performance and quality as the other chambers.

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Section: Discussionmentioning

confidence: 99%

Determination of Optimal Technological Parameters for Sorting Wheat Grains in Chambers of Different Constructions

Vaiciukevičius,

Jasinskas,

Jotautienė

et al. 2023

Processes

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“…The determined values of physical features can be used to determine the optimal operating parameters of the sets of machines and devices used, among others, in cultivation (Vogel, 2002). Damage to the seed caused by the seeding mechanism also impairs its physico-mechanical properties (Bulgakov, 2018;Rybiński et al, 2014;Mykhailov et al, 2021). Seed sowing should be carried out by means of precision seeders, this conclusion may be justified with both technological and economic reasons (Varina et al, 2001;Jaques et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Influence of physical properties of sugar beet seeds on the work quality of the seeding mechanism

Findura¹,

Malaga-Toboła²,

Kwaśniewski³

et al. 2023

Int. Agrophys.

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“…The development of mathematical models is a special aspect of experimental research in the field of engineering. Thus, in studies [13] and [14], mathematical models are constructed, and a system of second-order linear differential equations describing the dynamics of transverse displacement of the centre of mass is obtained.…”

Section: Introductionmentioning

confidence: 99%

Minimisation of the driving torque of the derricking mechanism of a tower crane during steady load hoisting

Ловейкін¹,

Romasevych²,

Shymko³

et al. 2022

Tehnìka ta energetika

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Efficient use of a tower crane often requires combining various operations, such as hoisting load and derricking. In the case when the load is hoisted at a steady speed, the problem of optimal control of the trolley movement mechanism arises, which goes beyond engineering calculations and is a scientific and applied problem. Its relevance is related to improving the controllability of crane mechanisms, increasing the capacity and reliability of the crane, and improving the energy efficiency of its drive mechanisms. These indicators are related to the choice of optimisation criteria. Thus, the purpose of the study is to optimise the starting mode of the derricking mechanism according to the criterion of the RMS value of the driving moment during a steady load hoisting. To achieve this goal, the following methods were applied: dynamics of machines and mechanisms, mathematical modelling, integral and differential calculus, and the ME-D-PSO method. For the boundary conditions, parameters are selected that eliminate load oscillations on the flexible suspension when the derricking mechanism slews to the steady-state driving mode. Based on the results of optimisation of the joint movement of mechanisms for derricking and load hoisting, graphical dependences of kinematic, dynamic, and energy characteristics of the start-up transition process are constructed and their analysis is carried out. The obtained dependences reveal the conditions for eliminating load oscillations on a flexible suspension during steady-state movement and reducing dynamic loads and energy losses during the start-up of the derricking mechanism. To implement the optimal start mode of the derricking mechanism during steady load hoisting, it is recommended to use optimal control of the drive mechanisms. The results obtained should be applied to the development of new and modernisation of existing motion control systems for tower crane mechanisms

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Energy Assessment of the Pneumatic Sieve Separator for Agricultural Crops

Cited by 9 publications

References 26 publications

Determination of Optimal Technological Parameters for Sorting Wheat Grains in Chambers of Different Constructions

Determination of Optimal Technological Parameters for Sorting Wheat Grains in Chambers of Different Constructions

Influence of physical properties of sugar beet seeds on the work quality of the seeding mechanism

Minimisation of the driving torque of the derricking mechanism of a tower crane during steady load hoisting

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