Факультет технічних систем і енергоефективних технологій (ТеСЕТ)
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Item Numerical study of the centrifugal contra rotating blade system(IOP Publishing Ltd, 2021) Куліков, Олександр Андрійович; Kulikov, Oleksandr Andriiovych; Ратушний, Олександр Валерійович; Ratushnyi, Oleksandr Valeriiovych; Ковальов, Ігор Олександрович; Kovalov, Ihor Oleksandrovych; Мандрика, Анатолій Семенович; Mandryka, Anatolii Semenovych; Ігнатьєв, Олександр Савич; Ihnatiev, Oleksandr SavychThe manuscript presents the results of a numerical study of a centrifugal contra rotating blade system based on a low-speed impeller (ns = 65). They were carried out to assess the possibility of using a contra rotating blade mesh operating in conjunction with a standard centrifugal impeller as a method of intensifying the transmission of energy to a fluid. The designs of the systems under consideration and their pressure and energy characteristics are presented.Item Modernization of centrifugal impeller blades(IOP Publishing Ltd, 2021) Ратушний, Олександр Валерійович; Ratushnyi, Oleksandr Valeriiovych; Сохань, Андрій Олександрович; Sokhan, Andrii Oleksandrovych; Ковальов, Ігор Олександрович; Kovalov, Ihor Oleksandrovych; Мандрика, Анатолій Семенович; Mandryka, Anatolii Semenovych; Ігнатьєв, Олександр Савич; Ihnatiev, Oleksandr SavychThe increase of the energy intensity of the pumping equipment reflects general tendency of technology development: to transmit more energy without significant increase of mass and size parameters of their working bodies. It is represented in the “Directive on Determining the Requirements for the Design of Products Consuming Electricity” that forwards a claim for a 40% reduction of energy consumption in Europe by 2020. Considering the task as for the increase of energy intensity of the pump stage, the possibility of creating a higher head and efficiency increase with the same overall dimensions, flow rates and speed of rotation has been considered as a way of solving the task. This can be achieved by replacing the spatial blade system of a centrifugal impeller of low (ns = 65) specific speed by cylindrical blades, since such working bodies perform the process of energy transfer from impeller to working liquid in the most intensive way. It will provide for the head rise of impeller and for the simplification of its manufacturing technology.Item Predictive vision of development paths of pump technical systems(IOP Publishing Ltd., 2021) Ковальов, Ігор Олександрович; Kovalov, Ihor Oleksandrovych; Ратушний, Олександр Валерійович; Ratushnyi, Oleksandr Valeriiovych; Джафаров, Тимур Васіфович; Dzhafarov, Tymur Vasifovych; Мандрика, Анатолій Семенович; Mandryka, Anatolii Semenovych; Ігнатьєв, Олександр Савич; Ihnatiev, Oleksandr SavychIn the work on the basis of objective laws on the development of technical systems and the features of the VI technological order directions of further development of pump technical systems are analyzed. The reserves of systems that already exist without changing the principle of the working process are shown, the concept of "combined working process" is introduced and the question of the necessity and possibility of searching for fundamentally different physical processes of liquid power transfer, including at the micro level, is raised.