DEVELOPMENT AND JUSTIFICATION OF CONSTRUCTIVE-REGIME PARAMETERS OF THE AUTOMATED SYSTEM OF MICROCLIMATE PROVISION IN APC PREMISES

Анотація

The authors’ research is aimed at solving current problems of technological renewal and development of the agro-industrial complex of Ukraine.This research was supported and funded by the Ministry of Education and Science of Ukraine under grant No 0121U108589 «Development of a complex of energy-efficient and resource-saving equipment and promising technologies for feeding farm animals of the AIC of Ukraine».The efficiency of animal husbandry directly depends on the conditions of keeping animals, in which ensuring an optimal microclimate is extremely important. Thus, the productivity of animals by 10-30% is determined by the microclimate of the premises. Deviation of microclimate parameters from the established limits leads to reduction of milk yield by 10-20%, increase in live weight – by 20-33%, increase in young animals – up to 5-40%, reduction of egg production hens – by 30-35%, the cost of the additional feed, reducing the service life of machinery, equipment and buildings themselves, reducing the resistance of animals to disease. In turn, ensuring an optimal microclimate in livestock facilities is associated with significant costs of heat and electricity, which costs up to 15% of producers. During the heating period, heat generating devices of livestock facilities for various purposes consume up to 90% of the total cost of fuel and energy resources and even a partial reduction of these costs will significantly reduce energy costs for production, and thus reduce its cost. The ever-increasing cost of energy complicates the situation and exacerbates the problem of implementing energy-saving technologies, as well as highlights the economic problem of reducing specific energy consumption for livestock production.The purpose of research is to increase the efficiency of the microclimate in pig farms by using an automated control system with reasonable regime parameters. To achieve this goal it is necessary to solve the following tasks: to analyze the technical and technological support of the microclimate in livestock facilities; to carry out research of parameters of a microclimate in a pigsty and identify areas for improvement of the system to ensure it; to determine the influence of design and regime parameters of the automated system of microclimate in the pigsty on its energy efficiency and uniformity of temperature distribution in the building.The method of theoretical research is mathematical modeling of the process of functioning of the automated system for ensuring the normative parameters of the microclimate in livestock facilities based on the provisions of heat engineering and aerodynamics using numerical calculation methods. The Mathematica computer mathematics system was used to simplify the obtained expressions and mathematical modeling.

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