Pub Date : 1900-01-01DOI: 10.37204/0131-2189-2020-12-1
V. Bulgakov, O. Adamchuk
Annotation Purpose. Increase the productivity of solid fertilizer applicators by increasing their working width. Methods. In the process of experimental research, the basic provisions of GOST 20915-75 “Agricultural machinery. Method for determining test conditions”, GOST 28714-2007 “Machines for applying solid mineral fertilizers. Test methods”. The results were processed using the Microsoft Office Excel 2007 software environment. Results. Setting the angle of inclination of the axis of the centrifugal working body of the TON within the range of 25–30° makes it possible to have the productivity of the machine-tractor unit for applying mineral fertilizers in 1 hour of the main time at the level of 35–40 ha/hour. Conclusions 1. The most intensive growth of the working width of the machine capture (84.8%) takes place with an increase in the angle of inclination of the TON disk to the horizontal plane up to 10°. At the same time, the working width of the machine increases from 16.5 m to 30.5 m, that is, 1.85 times. The subsequent increase in the disc installation angle in the horizontal plane to 30° leads to an increase in the working width of the machine by 11.4–14%, that is, by 1.11–1.15 times. An increase in the disc installation angle in the horizontal plane from 30° to 40°, provided that fertilization is applied with an unevenness of up to ±20%, does not lead to an increase in the working width of the machine. 2. The best indicators of fertilization both in terms of the working width and the unevenness of fertilization are ensured when the angle of inclination of the TON disc to the horizontal plane is within 25–30°. Wherein: • the uneven distribution of fertilizers at the working width is 19.2%; • the uneven distribution of fertilizers in the direction of movement of the unit is 8.9%; • deviation of the fertilizer application dose from the established one is 7.5%. The obtained indicators of the quality of the application of mineral the requirements for the quality of this technological process. Keywords: mineral fertilizers, application, experimental research, testing, uniformity of distribution, width of capture, productivity.
{"title":"The results of experimental research and testing of a machine for surface application of mineral fertilizers with inclined centrifugal scattering devices","authors":"V. Bulgakov, O. Adamchuk","doi":"10.37204/0131-2189-2020-12-1","DOIUrl":"https://doi.org/10.37204/0131-2189-2020-12-1","url":null,"abstract":"Annotation\u0000Purpose. Increase the productivity of solid fertilizer applicators by increasing their working width.\u0000Methods. In the process of experimental research, the basic provisions of GOST 20915-75 “Agricultural machinery. Method for determining test conditions”, GOST 28714-2007 “Machines for applying solid mineral fertilizers. Test methods”. The results were processed using the Microsoft Office Excel 2007 software environment.\u0000Results. Setting the angle of inclination of the axis of the centrifugal working body of the TON within the range of 25–30° makes it possible to have the productivity of the machine-tractor unit for applying mineral fertilizers in 1 hour of the main time at the level of 35–40 ha/hour.\u0000Conclusions\u00001. The most intensive growth of the working width of the machine capture (84.8%) takes place with an increase in the angle of inclination of the TON disk to the horizontal plane up to 10°. At the same time, the working width of the machine increases from 16.5 m to 30.5 m, that is, 1.85 times. The subsequent increase in the disc installation angle in the horizontal plane to 30° leads to an increase in the working width of the machine by 11.4–14%, that is, by 1.11–1.15 times. An increase in the disc installation angle in the horizontal plane from 30° to 40°, provided that fertilization is applied with an unevenness of up to ±20%, does not lead to an increase in the working width of the machine.\u00002. The best indicators of fertilization both in terms of the working width and the unevenness of fertilization are ensured when the angle of inclination of the TON disc to the horizontal plane is within 25–30°. Wherein:\u0000• the uneven distribution of fertilizers at the working width is 19.2%;\u0000• the uneven distribution of fertilizers in the direction of movement of the unit is 8.9%;\u0000• deviation of the fertilizer application dose from the established one is 7.5%.\u0000The obtained indicators of the quality of the application of mineral the requirements for the quality of this technological process.\u0000Keywords: mineral fertilizers, application, experimental research, testing, uniformity of distribution, width of capture, productivity.","PeriodicalId":253322,"journal":{"name":"Mehanization and electrification of agricultural","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133435687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.37204/0131-2189-2021-14-9
B. Kotov, V. Hryshchenko, S. Stepanenko, Y. Pantsir, I. Gerasimchuk
Annotation Purpose. Formulation of a mathematical description of the non-stationary thermal regime of the heat utilization system of ventilation emissions on the basis of a heat exchanger with an intermediate heat carrier for industrial premises. Methods. The specificity of the object under study determines the analytical method of research, which is based on the analysis of the thermal balance of the elements of the studied system and the heat and energy connections between them. Results. A mathematical description of the dynamics of the thermal process in a recuperative heat recovery unit with an intermediate heat carrier is formulated taking into account the variable parameters of ventilation air, both exhaust and supply air and the presence of condensation on the surface of the heat exchanger. Given the possibility of automatic control of the operation of the disposal system by changing the flow of intermediate coolant (which makes the system of equations nonlinear), a linearized mathematical model of the dynamics of the studied system is proposed. Conclusions 1. The obtained mathematical models allow to determine the dynamic characteristics of the system of waste heat utilization in transient modes, as well as to evaluate the efficiency of the system itself and to optimize the parameters of heat exchangers. 2. The linearized model of the thermal utilizer allows to synthesize the system of automatic control of the operating mode and to investigate its parameters. Keywords: waste heat utilization, heat exchanger recuperator, intermediate heat carrier, dynamic mode, mathematical model, production room.
{"title":"Mathematical model of system dynamics for heat utilization from ventilation emissions with intermediate heat carrier as an object of automation","authors":"B. Kotov, V. Hryshchenko, S. Stepanenko, Y. Pantsir, I. Gerasimchuk","doi":"10.37204/0131-2189-2021-14-9","DOIUrl":"https://doi.org/10.37204/0131-2189-2021-14-9","url":null,"abstract":"Annotation\u0000Purpose. Formulation of a mathematical description of the non-stationary thermal regime of the heat utilization system of ventilation emissions on the basis of a heat exchanger with an intermediate heat carrier for industrial premises.\u0000Methods. The specificity of the object under study determines the analytical method of research, which is based on the analysis of the thermal balance of the elements of the studied system and the heat and energy connections between them.\u0000Results. A mathematical description of the dynamics of the thermal process in a recuperative heat recovery unit with an intermediate heat carrier is formulated taking into account the variable parameters of ventilation air, both exhaust and supply air and the presence of condensation on the surface of the heat exchanger. Given the possibility of automatic control of the operation of the disposal system by changing the flow of intermediate coolant (which makes the system of equations nonlinear), a linearized mathematical model of the dynamics of the studied system is proposed.\u0000Conclusions\u00001. The obtained mathematical models allow to determine the dynamic characteristics of the system of waste heat utilization in transient modes, as well as to evaluate the efficiency of the system itself and to optimize the parameters of heat exchangers.\u00002. The linearized model of the thermal utilizer allows to synthesize the system of automatic control of the operating mode and to investigate its parameters.\u0000Keywords: waste heat utilization, heat exchanger recuperator, intermediate heat carrier, dynamic mode, mathematical model, production room.","PeriodicalId":253322,"journal":{"name":"Mehanization and electrification of agricultural","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114799668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.37204/0131-2189-2021-13-18
V. Myronenko, N. Veremeychyk
Annotation Purpose. Improving the efficiency of agricultural production by creating a reliable autonomous power supply system based on natural and own renewable energy sources. Methods. Methods of system analysis and design of technical systems. Results. Principles of building an effective system for the use of natural and own renewable energy sources in agriculture. The general structure and parameters of the energy supply system of agricultural production. Conclusions 1. According to the energy strategy, Ukraine by 2030 should increase the share of renewable energy in its overall energy balance by almost 3 times – from 8 to 25%. 2. One of the real ways to increase the reliability and efficiency of electricity supply of agricultural facilities is the transition to autonomous energy supply systems based on the use of their own renewable energy sources with a relative production cost within 0.43–0.98 of the cost of centralized electricity production. 3. The structure of a specific power supply system of the agro-industrial sector should be formed on the basis of the characteristics of production and household needs, assessment of the potential and characteristics of renewable energy sources and conditions of safe, cost-effective operation. Keywords: agricultural production, renewable energy, ecology, efficiency.
{"title":"Prospects for the implementation of autonomous power supply systems of agro-industrial production","authors":"V. Myronenko, N. Veremeychyk","doi":"10.37204/0131-2189-2021-13-18","DOIUrl":"https://doi.org/10.37204/0131-2189-2021-13-18","url":null,"abstract":"Annotation\u0000Purpose. Improving the efficiency of agricultural production by creating a reliable autonomous power supply system based on natural and own renewable energy sources.\u0000Methods. Methods of system analysis and design of technical systems.\u0000Results. Principles of building an effective system for the use of natural and own renewable energy sources in agriculture. The general structure and parameters of the energy supply system of agricultural production.\u0000Conclusions\u00001. According to the energy strategy, Ukraine by 2030 should increase the share of renewable energy in its overall energy balance by almost 3 times – from 8 to 25%.\u00002. One of the real ways to increase the reliability and efficiency of electricity supply of agricultural facilities is the transition to autonomous energy supply systems based on the use of their own renewable energy sources with a relative production cost within 0.43–0.98 of the cost of centralized electricity production.\u00003. The structure of a specific power supply system of the agro-industrial sector should be formed on the basis of the characteristics of production and household needs, assessment of the potential and characteristics of renewable energy sources and conditions of safe, cost-effective operation.\u0000Keywords: agricultural production, renewable energy, ecology, efficiency.","PeriodicalId":253322,"journal":{"name":"Mehanization and electrification of agricultural","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129910371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.37204/0131-2189-2019-9-23
Gritsyshyn, M., P. N.
Purpose. Substantiation of indicators of investment efficiency in the development of material and technical base of cultivating bioenergetic cultures on the basis of national samples of specialized equipment. Methods. Monographic, economic-mathematical, analysis and synthesis, abstract-logical, graph-analytical, system engineering. Results. An analysis of the investment attractiveness of the bioenergetic crop sector, implemented by the integrated financial and economic indicator of net present value, indicates the feasibility of increasing the capitalization of bioenergy crops production based on the latest domestic technology samples that will provide an increase in the net present value of the investment project for laying energy volts of energy willow by 30% in comparison with foreign analogues. Conclusions. The formation of the latest technical and technological base for the production of bioenergy crops requires significant investment and state protectionism. Creation of a favorable investment climate for the innovative development of material and technical base of production of bioenergy crops on the basis of domestic high technology technical level will ensure the dynamic development of not only bioenergy industry, but also the domestic economy as a whole. Keywords: bioenergy, technical and technological base, investment, economic efficiency.
{"title":"Efficiency of investing in the material and technology base of power willow production","authors":"Gritsyshyn, M., P. N.","doi":"10.37204/0131-2189-2019-9-23","DOIUrl":"https://doi.org/10.37204/0131-2189-2019-9-23","url":null,"abstract":"Purpose. Substantiation of indicators of investment efficiency in the development of material and technical base of cultivating bioenergetic cultures on the basis of national samples of specialized equipment.\u0000Methods. Monographic, economic-mathematical, analysis and synthesis, abstract-logical, graph-analytical, system engineering.\u0000Results. An analysis of the investment attractiveness of the bioenergetic crop sector, implemented by the integrated financial and economic indicator of net present value, indicates the feasibility of increasing the capitalization of bioenergy crops production based on the latest domestic technology samples that will provide an increase in the net present value of the investment project for laying energy volts of energy willow by 30% in comparison with foreign analogues.\u0000Conclusions. The formation of the latest technical and technological base for the production of bioenergy crops requires significant investment and state protectionism. Creation of a favorable investment climate for the innovative development of material and technical base of production of bioenergy crops on the basis of domestic high technology technical level will ensure the dynamic development of not only bioenergy industry, but also the domestic economy as a whole.\u0000Keywords: bioenergy, technical and technological base, investment, economic efficiency.","PeriodicalId":253322,"journal":{"name":"Mehanization and electrification of agricultural","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127888558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.37204/0131-2189-2021-14-8
S. Stepanenko, B. Kotov, I. S. Popadyuk
Annotation Purpose. Formation of a mathematical description of the process of moving grains with different density in vibro-pneumatic liquefied grain medium under the action of pulsating air flow to determine the parameters of movement and the possibility of their separation into fractions. Methods. Theoretical determination of the dependences of the motion of grains with different densities in a vibro-pneumatic grain medium with pulsating air flow determines the mathematical method of research based on the addition and numerical solution of the equations of grain motion in a pneumatic vibrating separator. The mathematical model is formed as a result of drawing up the scheme of force interaction on grain in the vibro-pneumatic liquefied grain environment and the differential equations of movement of grains which are presented by a material point and indicators characterizing physical and mechanical properties of grain environment are received. Results. The motion of the center of mass of grains is considered as the motion of a certain particle, the coordinates of which coincide with the coordinates of the moving coordinate system (x, y), and the mass of a single grain m differs from the grains of the medium in density. The change of air flow velocity and the influence of pulsating air flow on the flow of grain material moving on a vibrating perforated surface are determined. The discrete-periodic change of the flow velocity, which is fed through the perforated support surface into the layer of grain material, is analytically described. The parameters of the grain motion process in an oscillating fluidized medium are determined, which are determined by the solution of a complex system of differential equations using computational methods using a PC. Conclusions. As a result of theoretical research, the possibility of increasing the efficiency of separation of grain materials by specific gravity of grains, by intensifying the process of separation of grain material provided the use of pulsating air flows to separate mixtures on vibrating surfaces and compared with existing separators using horizontal and inclined decks grain separation efficiency material increases by 35–42%. Keywords: pulsating air flow, grain, density, trajectory, fluidized medium, separation process, harmonic law of motion.
{"title":"Investigation of the process of pneumatic vibration separation of grain by density during one-dimensional movement of grain flow","authors":"S. Stepanenko, B. Kotov, I. S. Popadyuk","doi":"10.37204/0131-2189-2021-14-8","DOIUrl":"https://doi.org/10.37204/0131-2189-2021-14-8","url":null,"abstract":"Annotation\u0000Purpose. Formation of a mathematical description of the process of moving grains with different density in vibro-pneumatic liquefied grain medium under the action of pulsating air flow to determine the parameters of movement and the possibility of their separation into fractions.\u0000Methods. Theoretical determination of the dependences of the motion of grains with different densities in a vibro-pneumatic grain medium with pulsating air flow determines the mathematical method of research based on the addition and numerical solution of the equations of grain motion in a pneumatic vibrating separator. The mathematical model is formed as a result of drawing up the scheme of force interaction on grain in the vibro-pneumatic liquefied grain environment and the differential equations of movement of grains which are presented by a material point and indicators characterizing physical and mechanical properties of grain environment are received.\u0000Results. The motion of the center of mass of grains is considered as the motion of a certain particle, the coordinates of which coincide with the coordinates of the moving coordinate system (x, y), and the mass of a single grain m differs from the grains of the medium in density.\u0000The change of air flow velocity and the influence of pulsating air flow on the flow of grain material moving on a vibrating perforated surface are determined. The discrete-periodic change of the flow velocity, which is fed through the perforated support surface into the layer of grain material, is analytically described.\u0000The parameters of the grain motion process in an oscillating fluidized medium are determined, which are determined by the solution of a complex system of differential equations using computational methods using a PC.\u0000Conclusions. As a result of theoretical research, the possibility of increasing the efficiency of separation of grain materials by specific gravity of grains, by intensifying the process of separation of grain material provided the use of pulsating air flows to separate mixtures on vibrating surfaces and compared with existing separators using horizontal and inclined decks grain separation efficiency material increases by 35–42%.\u0000Keywords: pulsating air flow, grain, density, trajectory, fluidized medium, separation process, harmonic law of motion.","PeriodicalId":253322,"journal":{"name":"Mehanization and electrification of agricultural","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130129613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.37204/0131-2189-2019-10-7
V. Shvidya
Purpose. The rationale for heating seeds by contact in a vacuum by analyzing the solutions of the differential equation of unsteady heat conduction. Methods. The differential heat equation, the Fourier method, the Sturm-Livull problem and the Dirac δ-function are used. Results. Based on the Fourier method and the Sturm-Livull problem, a differential heat equation is obtained, which makes it possible to determine the kinetics of seed heating depending on the thickness of the layer at a known temperature of the heating surface. A graphical analysis of the solution of the differential heat equation showed that for uniform drying of the seeds in vacuum it is necessary to apply mixing during drying. Conclusions. The analysis of the contact heating technological process, which was carried out on the basis of solving the differential equation of unsteady heat conduction, showed that the heating rate of seeds nonlinearly decreases with increasing layer thickness. This leads to uneven drying of the seeds in a vacuum. Therefore, the use of only one contact surface for heating seeds in a vacuum is impractical. Keywords: seeds, contact heating, heating temperature, layer thickness, vacuum, drying, heating.
{"title":"The theoretical rationale for the use of contact heating when drying seeds in a vacuum","authors":"V. Shvidya","doi":"10.37204/0131-2189-2019-10-7","DOIUrl":"https://doi.org/10.37204/0131-2189-2019-10-7","url":null,"abstract":"Purpose. The rationale for heating seeds by contact in a vacuum by analyzing the solutions of the differential equation of unsteady heat conduction.\u0000Methods. The differential heat equation, the Fourier method, the Sturm-Livull problem and the Dirac δ-function are used.\u0000Results. Based on the Fourier method and the Sturm-Livull problem, a differential heat equation is obtained, which makes it possible to determine the kinetics of seed heating depending on the thickness of the layer at a known temperature of the heating surface. A graphical analysis of the solution of the differential heat equation showed that for uniform drying of the seeds in vacuum it is necessary to apply mixing during drying.\u0000Conclusions. The analysis of the contact heating technological process, which was carried out on the basis of solving the differential equation of unsteady heat conduction, showed that the heating rate of seeds nonlinearly decreases with increasing layer thickness. This leads to uneven drying of the seeds in a vacuum. Therefore, the use of only one contact surface for heating seeds in a vacuum is impractical.\u0000Keywords: seeds, contact heating, heating temperature, layer thickness, vacuum, drying, heating.","PeriodicalId":253322,"journal":{"name":"Mehanization and electrification of agricultural","volume":"247 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127698228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.37204/0131-2189-2021-13-26
V. Lysenko, I. Chernova
Annotation Purpose. Development of a methodology for energy efficient management of the production of entomophages based on the use of intelligent algorithms. Methods. Factor-target and structural analysis; intelligent information technologies. Results. A methodology for intelligent management of the production of entomophages has been developed, which includes: determination of management objectives; production management requirements, taking into account its peculiarities; formalization complex and loosely structured dependencies; structuring information flows of production; intelligent algorithms for production control based on fuzzy logic, neural networks, cognitive analysis. Conclusions. The proposed methodology for the intelligent management of the production of entomophages makes it possible: to increase the level of technological controllability of processes (the possibility of changing its parameters) under the conditions of disturbances, while reducing the consumption of electricity and the influence of the subjective factor; to form control strategies in conditions of uncertainty. The functions of intelligent management of the production of entomophages are: assessment, forecasting; management; control; formalization; structuring; infocommunications; adaptability; monitoring; visualization and archiving of information. Keywords: methodology, management, production of entomophages, intelligent information technologies.
{"title":"Methodology for intellectual management of entomophagous production","authors":"V. Lysenko, I. Chernova","doi":"10.37204/0131-2189-2021-13-26","DOIUrl":"https://doi.org/10.37204/0131-2189-2021-13-26","url":null,"abstract":"Annotation\u0000Purpose. Development of a methodology for energy efficient management of the production of entomophages based on the use of intelligent algorithms.\u0000Methods. Factor-target and structural analysis; intelligent information technologies.\u0000Results. A methodology for intelligent management of the production of entomophages has been developed, which includes: determination of management objectives; production management requirements, taking into account its peculiarities; formalization complex and loosely structured dependencies; structuring information flows of production; intelligent algorithms for production control based on fuzzy logic, neural networks, cognitive analysis. \u0000Conclusions. The proposed methodology for the intelligent management of the production of entomophages makes it possible: to increase the level of technological controllability of processes (the possibility of changing its parameters) under the conditions of disturbances, while reducing the consumption of electricity and the influence of the subjective factor; to form control strategies in conditions of uncertainty. The functions of intelligent management of the production of entomophages are: assessment, forecasting; management; control; formalization; structuring; infocommunications; adaptability; monitoring; visualization and archiving of information.\u0000Keywords: methodology, management, production of entomophages, intelligent information technologies.","PeriodicalId":253322,"journal":{"name":"Mehanization and electrification of agricultural","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116587093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.37204/0131-2189-2019-9-1
A. V., K. V., Kuzmych, A., M. V.
Purpose. Identification of promising technologies for harvesting the non-cereal part of the corn and sunflower crops, which provide for the controlled collection of quality products in accordance with the needs. Methods. Analysis of common technological processes of harvesting straw and stem feed, the non-grain part of the corn and sunflower harvest, the synthesis of options for harvesting individual parts of the non-grain part of the corn and sunflower crop and evaluating them by the possible harvest, experimental determination of the full harvest for a particular process. Results. Synthesized and analyzed options for harvesting the non-cereal part of the corn and sunflower crops, which can be used in modern agricultural production. The analysis of the non-cereal part of the corn and sunflower harvest was carried out. The proportion of the non-cereal part of the corn and sunflower crops, which can be collected with various harvesting options, has been established. Experimental studies have been carried out of individual operations of collecting the non-grain part of the corn and sunflower crops. Conclusions. Harvesting the stem mass in a compacted form (rolls, bales) for energy needs is more appropriate than in loose form. Farms that grow corn and sunflower choose the technology of harvesting the non-cereal part of the crop, depending on the area of sowing of crops and needs in the stem mass. The investigated options for harvesting the non-cereal part of the crop provide a complete collection of the stem mass from 3.5 to 85.4%. The final choice of the option of harvesting raw materials is determined not only by the completeness of the collection of raw materials, but also by its technical and economic indicators. Keywords: non-cereal part of corn and sunflower harvest, technology of harvesting non-cereal part, solid biofuel.
{"title":"Aspects of non-grain part harvesting for corn and sunflower as solid biofuels","authors":"A. V., K. V., Kuzmych, A., M. V.","doi":"10.37204/0131-2189-2019-9-1","DOIUrl":"https://doi.org/10.37204/0131-2189-2019-9-1","url":null,"abstract":"Purpose. Identification of promising technologies for harvesting the non-cereal part of the corn and sunflower crops, which provide for the controlled collection of quality products in accordance with the needs.\u0000Methods. Analysis of common technological processes of harvesting straw and stem feed, the non-grain part of the corn and sunflower harvest, the synthesis of options for harvesting individual parts of the non-grain part of the corn and sunflower crop and evaluating them by the possible harvest, experimental determination of the full harvest for a particular process.\u0000Results. Synthesized and analyzed options for harvesting the non-cereal part of the corn and sunflower crops, which can be used in modern agricultural production. The analysis of the non-cereal part of the corn and sunflower harvest was carried out. The proportion of the non-cereal part of the corn and sunflower crops, which can be collected with various harvesting options, has been established. Experimental studies have been carried out of individual operations of collecting the non-grain part of the corn and sunflower crops.\u0000Conclusions. Harvesting the stem mass in a compacted form (rolls, bales) for energy needs is more appropriate than in loose form. Farms that grow corn and sunflower choose the technology of harvesting the non-cereal part of the crop, depending on the area of sowing of crops and needs in the stem mass. The investigated options for harvesting the non-cereal part of the crop provide a complete collection of the stem mass from 3.5 to 85.4%. The final choice of the option of harvesting raw materials is determined not only by the completeness of the collection of raw materials, but also by its technical and economic indicators.\u0000Keywords: non-cereal part of corn and sunflower harvest, technology of harvesting non-cereal part, solid biofuel.","PeriodicalId":253322,"journal":{"name":"Mehanization and electrification of agricultural","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124908574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.37204/0131-2189-2022-15-11
Shvidia V. О.
Purpose. To analyze the effect of vacuum on the process of drying seeds of agricultural crops using mathematical modeling. Methods. Methods of differential calculus were used, in particular first-order differential equations, as well as differential geometry. The analysis of the mathematical model was carried out using graphs that were built by computer programs for solving differential equations. Results. On the basis of balance equations of heat and humidity flows of the seed drying process in the drying chamber, a system of differential equations was compiled and solved. Analytical dependencies describing the kinetics of drying and heating crop seeds when using vacuum in the drying chamber are obtained. On the example of soybean seeds, graphic dependencies of the kinetics of drying and heating at different pressures and the initial absolute humidity of the air in the drying chamber are constructed. These graphic dependences show that an increase in the vacuum in the drying chamber leads to an increase in the rate of seed drying, and a decrease in the initial absolute air humidity also increases the drying rate and decreases the equilibrium humidity. Analysis of the graphical dependencies of seed heating kinetics shows that drying in a vacuum reduces some of the thermal energy used directly to heat the seeds and reduces their heating temperature. Conclusions. To describe the process of heat and mass transfer in the process of drying seeds of agricultural crops under vacuum conditions, a mathematical model has been developed using a system of differential equations. The solution of which, on the example of soybean seeds, shows that when using a vacuum in the process of drying seeds, the exposure time and the proportion of thermal energy used directly to heat the seeds are reduced. Reducing the initial absolute humidity of the air inside the drying chamber also reduces the exposure time and equilibrium humidity. Therefore, drying in a vacuum reduces the negative impact of the heater on the seeds. Keywords: seeds, seed moisture, seed temperature, vacuum, absolute humidity, drying kinetics, drying chamber, equilibrium humidity.
{"title":"Mathematical modeling of heat and mass transfer in the process of drying seeds of agricultural crops in vacuum conditions","authors":"Shvidia V. О.","doi":"10.37204/0131-2189-2022-15-11","DOIUrl":"https://doi.org/10.37204/0131-2189-2022-15-11","url":null,"abstract":"Purpose. To analyze the effect of vacuum on the process of drying seeds of agricultural crops using mathematical modeling.\u0000Methods. Methods of differential calculus were used, in particular first-order differential equations, as well as differential geometry. The analysis of the mathematical model was carried out using graphs that were built by computer programs for solving differential equations.\u0000Results. On the basis of balance equations of heat and humidity flows of the seed drying process in the drying chamber, a system of differential equations was compiled and solved. Analytical dependencies describing the kinetics of drying and heating crop seeds when using vacuum in the drying chamber are obtained. On the example of soybean seeds, graphic dependencies of the kinetics of drying and heating at different pressures and the initial absolute humidity of the air in the drying chamber are constructed. These graphic dependences show that an increase in the vacuum in the drying chamber leads to an increase in the rate of seed drying, and a decrease in the initial absolute air humidity also increases the drying rate and decreases the equilibrium humidity. Analysis of the graphical dependencies of seed heating kinetics shows that drying in a vacuum reduces some of the thermal energy used directly to heat the seeds and reduces their heating temperature.\u0000Conclusions. To describe the process of heat and mass transfer in the process of drying seeds of agricultural crops under vacuum conditions, a mathematical model has been developed using a system of differential equations. The solution of which, on the example of soybean seeds, shows that when using a vacuum in the process of drying seeds, the exposure time and the proportion of thermal energy used directly to heat the seeds are reduced. Reducing the initial absolute humidity of the air inside the drying chamber also reduces the exposure time and equilibrium humidity. Therefore, drying in a vacuum reduces the negative impact of the heater on the seeds.\u0000Keywords: seeds, seed moisture, seed temperature, vacuum, absolute humidity, drying kinetics, drying chamber, equilibrium humidity.","PeriodicalId":253322,"journal":{"name":"Mehanization and electrification of agricultural","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125533609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.37204/0131-2189-2022-15-16
Adamchuk V. V., Boris A. M., Savchenko I. F., Rykhlivskyi P. A., Kasprovich I. K., Kalinichenko А. P.
Purpose. Improvement of the quality of work and labor productivity thanks to the automation of driving the MTU as a result of the development of a universal control system for agricultural units. Methods. The structural-analytical method is applied. Results. An analysis of technological solutions from specialized technical means for automated control of MTU was carried out. A technical and economic analysis of technical means for automated control of MTU was carried out. The structural and functional scheme of the autopilot control system in aggregation with agricultural machinery is substantiated. Conclusions. As a result of the research, it was established that the developed automatic driving system ensured an increase in the row spacing of the vegetable planter and accurate driving and coordination of the width of the inter-row spacing with technical means for spraying and harvesting vegetable crops. Keywords: precision driving system, navigation, automatics, table carrots, ridge former, seeding device.
{"title":"The experience of using a system of precise driving of aggregates in the cultivation of table roots","authors":"Adamchuk V. V., Boris A. M., Savchenko I. F., Rykhlivskyi P. A., Kasprovich I. K., Kalinichenko А. P.","doi":"10.37204/0131-2189-2022-15-16","DOIUrl":"https://doi.org/10.37204/0131-2189-2022-15-16","url":null,"abstract":"Purpose. Improvement of the quality of work and labor productivity thanks to the automation of driving the MTU as a result of the development of a universal control system for agricultural units.\u0000Methods. The structural-analytical method is applied.\u0000Results. An analysis of technological solutions from specialized technical means for automated control of MTU was carried out. A technical and economic analysis of technical means for automated control of MTU was carried out. The structural and functional scheme of the autopilot control system in aggregation with agricultural machinery is substantiated.\u0000Conclusions. As a result of the research, it was established that the developed automatic driving system ensured an increase in the row spacing of the vegetable planter and accurate driving and coordination of the width of the inter-row spacing with technical means for spraying and harvesting vegetable crops.\u0000Keywords: precision driving system, navigation, automatics, table carrots, ridge former, seeding device.","PeriodicalId":253322,"journal":{"name":"Mehanization and electrification of agricultural","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130147371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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