Тези доповідей, матеріали конференцій
Постійне посилання на розділhttps://dspace.nuft.edu.ua/handle/123456789/7373
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Документ Process of hop particle precipitation in combined wort brew machine(2024) Chepeliuk, Oleksandr; Udodov, Sergiy; Chepeliuk, OlenaA mathematical model of separating solid particles of crushed hops from wort has been developed to improve the combined wort brew machine. A formula for determining the radius of the sediment formation area, which depends on the characteristics of the medium, the operating modes of the apparatus, and the functions characterising the velocity distribution in the boundary layer, is proposed. A dependence for calculating the deposition rate at which moving particles settle to the bottom of the combined wort brew machine is obtained. Based on the obtained results, recommendations on the design and operating parameters of the apparatus are given.Документ Improving the process and equipment for tablets pressing(2020) Spolovych, Maksym; Prokop, Andrii; Chepeliuk, OlenaBecause of differences in the raw materials density and incomplete filling of the tablet presses dies, there are deviations in the mass of the finished solid dosage forms. The task of a dosing accuracy increasing requires a solution. The rational idea of improving the tablet press dosing mechanism is to adjust the size of the connecting hole between the feed cup and the feeder. It is proposed to change the relative position of the windows of the feeder and the feed cup, which are connected, by rotating the damper located in the ring between the cup and the feeder housing. This mechanism is much easier, faster and more accurately allows you to adjust the flow rate of the tableting mass. The proposed design is simpler and more reliable, as it does not require additional operations to configure. The inclined plane remains in a static position, so the error in braking the flow is smaller than when turning it. Improving the design of the feeder of the rotary tablet press by replacing the lever mechanism on the rotary damper, the position of which regulates the amount of material entering the mixers, simplifies the feed cup design, increases the efficiency of die filling and, accordingly, the dosing accuracy, facilitates the feeding device maintenance and increases its reliability in operation.Документ Justification of the production lines arrangement based on quantitative and graphic methods for assessing the level of equipment excellence(2018) Vasylkov, Volodymyr; Chepeliuk, Oleksandr; Chepeliuk, OlenaOn the example of the estimation of technical and economic indicators of machines for the production of burger products, the task of multicriterial choice of equipment for the production lines arrangement by methods of spectral analysis, Pareto and distance to the goal was solved. The method of spectral analysis is based on the apparatus of dead-end tests, involves comparing all the definite combinations of features which describe the object, has advantages over Pareto and motion to the goal methods, because it provides a generalized mathematical evaluation of the specimens which are considered. After analyzing five indicators (productivity, capacity, capacity of the feeding bin, weight, overall dimensions) of eight samples of equipment for the burger products production from different manufacturers, it has been established that according to the chosen parameters, the preference should be given to the machine Laminerva C/E 653 1ph. The correctness of a decision primarily depends on the correct choice of indicators to be compared. In their composition, in the future it is necessary to include indicators of reliability and durability, as well as quality indicators of finished products.Документ Increase the operating efficiency of the equipment for the liquid nutrient medium sterilization(2018) Fomenko, Yelyzaveta; Kucolapskiy, Andriy; Chepeliuk, OlenaThe irrelevant microflora in liquid nutrient media suppresses the growth of the culture of microorganisms, as well as changes the composition and properties of the nutrient medium, so it needs to be sterilized. Existing machine-and-apparatus schemes are quite energy-consuming and difficult to maintain, so increasing their efficiency is an urgent task. The feature of the proposed scheme of continuous sterilization of a liquid nutrient medium based on molasses with a productivity of 25 m3/h is the use of two contact heads, one of which is heated by the secondary vapor, and a tubular heat exchanger to cool sterile nutrient medium. Thermal and hydrodynamic processes that occur during processing, are simulated in the Flow Vision software system. The results of the computational experiment conducted in the Flow Vision software system indicate that the product speed through pipelines is on average 1.1 m/s and is sufficient to provide the desired productivity at moderate costs of transportation. For the considered scheme, the rational values of heat carriers temperatures required to achieve the desired product temperatures during its sterilization and cooling were determined. So, the heating steam temperature should be 132 ° С, the temperature of the cooling water should be 15 °С.Документ Influence of electrophysical water treatment on the process of beverages saturation(2018) Nescuba, Oleksiy; Chepeliuk, OlenaThe content of carbon dioxide, which is actively used by producers of carbonated beverages as a preservative, acidity regulator and antioxidant, significantly affects the quality of finished products. The possibility of changing the ph value, which affects the balance between carbon dioxide, bicarbonate and carbonate during saturation, by electrophysical treatment of water was considered. Industry produces various variants of electrolysers, but they are not suitable for saturation of drinks. Therefore, the development of an appropriate design is an urgent task. It is expedient to carry out the process of saturation simultaneously with the electrophysical treatment of pre-prepared (cooled and deaerated) water. The parameters that influence the efficiency of electrophysical treatment and the quality of finished products are the voltage, the voltage-ampere characteristic, the mutual placement of the electrodes, the duration of activation, the degree of mineralization of the solution. The influence of material of equipment, including electrodes, on the content of metals in the carbonated beverages is also taken into account. Electrodes in the process of operation should not experience electrochemical destruction. It is expedient to make an anode from a titanium, a cathode - from a corrosion resistant steel AISI 321.