ABOUT THE WAYS OF ENSURING VENTILATION IN WORKSHOPS LIVESTOCK COMPLEXES

Abstract

The methods of organization ventilation in livestock complexes are considered. Using the example of a fattening housing for 200 heads of a pig breeding complex, the methods of organizing a mechanical supply and exhaust and natural ventilation system are shown. For this housing, the performance of the ventilation system is calculated by excess moisture and by the content of carbon dioxide in the room. It is established that it is advisable to produce the performance of the ventilation system according to the values of excess moisture, which meets the requirements of the zoo-hygienic standard. The calculation of the multiplicity of air exchange in the animal housing is made, which is 1.5 times and corresponds to the normative design indicators for pig farms. An aerodynamic calculation of the supply and exhaust ventilation systems is made, the number of supply and exhaust ducts for each system is determined, respectively. To visualize the process of air supply and distribution in the SolidWorks program, a model of air flows is built during the operation of a natural and supply and exhaust ventilation system for three cases when the outside air temperature is -20; 0; +20 ° C. It is shown that in warm and cold periods of the year it is advisable to supply prepared air through distribution channels of supply ventilation. To achieve the required parameters of the indoor air in the pig complex, it is proposed to prepare the supply air in the mechanical ventilation system using an air heat pump with the MOVEBIT anti-icing system.