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Постійне посилання колекціїhttps://dspace.nuft.edu.ua/handle/123456789/7522
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Документ Energy parameters of the process of ultrafine grinding og medical and cosmetic components in the bead mill(2021) Hrininh, Kateryna; Gubenia, Oleksii; Chepeliuk, OlenaThe process of ultrafine grinding of components of medicines and cosmetics in a laboratory bead mill is considered. The purpose of the study is (1) to determine the energy parameters of the process of ultrafine grinding of medicinal and cosmetic components in a bead mill, as well as (2) to determine the dependences of changes in technological parameters. A suspension of castor oil and cosmetic pigment in a ratio of 60% oil and 40% pigment was used as a model body. A series of experiments was carried out, where the degree of grinding was determined using a microscope with a built-in camera and software, the temperature was measured with ds18b20 temperature sensors, the power was measured with a three-phase CNFAJ Intelligent Power Meter. When grinding the pigment "red 120" for a period of time from 0 to 45 minutes, the power decreases, the temperature of the "beads-product" system increases, and the particle size decreases. This process occurs most intensively in the first 5 minutes. Most of the energy is spent on the work, which is spent on mixing the system "beads-product", and the work, that is spent on heating the structural components of the product and the parts of the mill interacting with them, which, in turn, depend on rheological properties of the suspension.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.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 Effect of treatment modes on quality and antioxidant properties of tomato and beet processing products(2018) Petrova, Zhanna; Pazyuk, Vаdym; Samoilenko, Kateryna; Chepeliuk, OlenaThe research was conducted to substantiate the rational drying conditions of tomato seeds. The ratio and drying conditions of the composition from tomato waste with the addition of red beet were substantiated. The tomato seeds were prepared according to the traditional methodology used in the industry. From red beet and tomato waste compositions with the ratios of components 4:1, 3:1, 2:1, 1:1 were created. Tomato seeds have been dried using the convective method at the air temperature t = 50–80˚C, as well as the composition from red beets and pulp of tomatoes – at t = 60–100 ºС. The quality of dried seeds was estimated on the basis of its germinability, dried mixtures – on the content of betanin in them. When the temperature of the air increases, the intensity of tomato seeds drying increases too. Thus, the drying time reduces by 2.5 times when the air temperature is raised from 50 to 80 °C. However, qualitative seed material, which gives the germinability of 98%, has been attained at the drying temperature of 50 ºС. Non-waste processing of tomatoes involves the creation of compositions of pulp tomatoes and sliced red beets, their drying, grinding and packing. In industrial conditions, red beets need to be cut into chips, which intensifies the drying process of the composition. The slicing of tomatoes in compositions does not affect the process speed. When the air temperature increases from 60 to 100 °C, the intensity of compositions drying is raised by 1,8 times. Maximum preservation of the useful substances in the finished product results from the choice of a soft drying condition and an air temperature of 60°С. pH = 3.9 is characteristic for the ratio of red beet-tomato components 3:1 in composition, which ensures the maximum preservation of betanin (94.7%) at drying. The heat carrier temperature substantially affects the tomato seeds germinability and antioxidant properties of tomato and beet processing products.Документ Simulation of fluid dispersion in ejection devices(2014) Shpak, Maksim; Chepeliuk, Olena; Besarab, I.This article describes how moisturizing of bulk components in the dryer-granulator and equipment for its implementation. An ejection device was proposed and by mathematical modeling its rational structure was proved. It was recommended to implement supply of liquid in the central tube and the air - in the peripheral holes. The use of ejecting spray devices which have a proposed design provides a homogeneous water-air mixture with a uniform velocity and sufficient pressure. В статті розглянуто процес зволоження сипких компонентів у сушарці-грануляторі і обладнання для його реалізації. Запропоновано використовувати ежекційний пристрій і шляхом математичного моделювання обґрунтовано його раціональну конструкцію. Рекомендовано здійснювати подачу рідини у центральну трубку, а повітря – у периферійні отвори. Використання ежекційних розпилюючих пристроїв запропонованої конструкції забезпечує отримання однорідної водо-повітряної суміші з рівномірною швидкістю і достатнім тиском.