The presence of a large amount of root residues after harvesting corn creates problems for the processing of the field. On the basis of field and laboratory studies, the character of weediness and the main physical and morphological characteristics of rhizomes were revealed. Analysis of the variation curves of the dimensional characteristics of root residues and the mass graphical dependences of rhizomes made it possible to develop a general approach to freeing fields from plant residues of corn.
The methodology is proposed and the simulation model of functioning of the energy supply system of agricultural enterprises using wind power installations is developed, which enables to solve the problem of justification of the parameters of the relevant system. The model of the energy supply system of an agricultural enterprise using wind power is developed, which is based on the method of stochastic simulation and provides justification of the parameters of this system by the cost criterion. On the basis of passive production experiments, the study of the naturalindustrial conditions of energy supply of agricultural enterprises using the wind power installations for the conditions of Zhovkva district of Lviv region was performed. Computer experiments were carried out using the developed simulation model of functioning of the energy supply system of agricultural enterprises using wind power installations. On the example of the natural and production conditions of Zhovkva district of Lviv region, system functional indicators of the energy supply system of agricultural enterprises with the use of wind power installations are established. The tendencies of change in the cost of utilized energy for changes in parameters of the energy supply system of an agricultural enterprise using wind energy and the share of its replacement are justified.
Hydrogen production from biomass may become one of the leading areas of bioenergy in Ukraine soon.Currently, the main direction of biomass energy production in Ukraine is the production of thermal energy for distributed heat supply of enterprises and private households by burning biomass of wood and agricultural origin. Nowadays in Ukraine, there is a technology for the production of biohydrogen. We calculated the environmental and economic effects of hydrogen production as a source of energy. We have come up with the following conclusion that if there is a demand for the final product, hydrogen production will be attractive from economic standpoint and will not require a green tariff or other support from the government.The market price of biohydrogen will be $ 4-5 per kg and will be comparable to that which the European Union aims to achieve.We assume that hydrogen may be a cleaner source of energy for end users, especially in the transport sector in the future.One of the main issues of Ukraine's possible participation in Europe's hydrogen energy program as a supplier and producer of renewable hydrogen is the possibility of its technically safe and cost-effective transportation to EU countries.As the main hypothesis considered transportation of hydrogen using the gas transmission system of Ukraine as part of a mixture with natural gas. Calculations show that, of course, obtaining energy from hydrogen, even in mass production, will be more expensive than alternative traditional and non-traditional methods. The development of this technology, in any case, is promising in terms of the development of energy independence and environmental development of states. The effect of scale in mass production of hydrogen energy should also work, which will significantly reduce the cost of this technology.
When we design the automated systems of unloading materials from the tankers, especially when we construct the automated tool for planting an energy willow, there is a need to create the movement model and to study its characteristics. The combination of cuttings, unloaded from the tanker, can be represented as the flow of a two-phase pseudo liquid. Then the process of unloading itself can be modelled on the basis of methods of hydrodynamic multiphase systems. The main characteristics that affect the process of unloading are highlighted in the deduced equation. The effective coefficient of vibro-viscosity and the calculation algorithm for the dynamic coefficient of vibro-viscosity in terms of cuttings oscillatory motion influenced by gravity field and harmonic vibrations is given in the study.
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