The article is devoted to the development of microwave technology and installations for preparing frozen cow colostrum for calf feeding by exposure to an ultrahigh-frequency electromagnetic field in two volume resonators, which allow defrosting and heating of cow colostrum at different doses in a continuous mode. Two resonator microwave installations designed for farms have been developed and described. Effective modes of defrosting and warming up cow colostrum in an electromagnetic field of ultrahigh frequency: duration of exposure to ultra-high frequency electromagnetic field in a resonator is 12 min; power of microwave generators 3.5–3.65 kW; plant productivity 25–30 kg/h; energy costs for the process 0.12–0.18 kW-kg/h, heating temperature of raw materials to 38–40 °C. For cattle farms up to 600 heads, one microwave installation is enough to defrost and heat cow colostrum. The annual economic effect due to lower operating costs will be 153600 rubles. The profitability of the process will increase by 3.22%.
Research objective: Scientific substantiation and development of an algorithm for selecting reservoir fire protection measures based on the big breathing (filling loss) quantitative assessment. Method of research: Theoretical generalization and analysis of approaches for choosing big breathing volume calculating methods, comparative analysis of modern methodological approaches for tank breaths quantitative assessment, as well as using methods for calculating BLEVE effect probability. Results of the study: Analysis of approaches for choosing methods showed that each method has its own calculation specifics, which are reflected in results. Using a comparative analysis of methodological approaches was determined that volumes of big breathing calculated for each method differ by more than 30%. In this regard, algorithm for choosing calculation methods with further forecasting of fire situation is proposed. The algorithm consists of three stages. At the beginning, it is necessary to calculate the filling loss volume, on the basis of them the level of damaging factors is carried out. Depending on the possible situation, protective measures are choosing.
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