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| Знайдено в інших БД: | Реферативна база даних (2) |
Список видань за алфавітом назв: Авторський покажчик Покажчик назв публікацій  |
Пошуковий запит: (<.>A=Kozin V$<.>) | |||
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Загальна кількість знайдених документів : 11 Представлено документи з 1 до 11 |
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| 1. | 
Kozin V. Composition of game situations in the solution hockey player’s motorial tasks [Електронний ресурс] / V. Kozin, O. Zykov // Теорія і методика фізичного виховання і спорту. - 2015. - № 3. - С. 19-23. - Режим доступу: http://nbuv.gov.ua/UJRN/TMFVS_2015_3_5 | ||
| 2. | 
Sharapov S. Experimental investigation of liquid-vapor ejector with conical mixing chamber [Електронний ресурс] / S. Sharapov, V. Arsenyev, V. Kozin // Технологический аудит и резервы производства. - 2016. - № 4(1). - С. 50-55. - Режим доступу: http://nbuv.gov.ua/UJRN/Tatrv_2016_4(1)__9 | ||
| 3. | 
Safronov D. V. Determining the style of conducting a fight of qualified boxers based on neurodynamic indicators using multivariate analysis methods [Електронний ресурс] / D. V. Safronov, V. Yu. Kozin, Zh. L. Kozina, A. V. Basenko, I. O. Riabenkov, S.B Khrapov // Health, sport, rehabilitation. - 2019. - № 5(2). - С. 78-87. - Режим доступу: http://nbuv.gov.ua/UJRN/hsr_2019_5(2)__11 | ||
| 4. | 
Sharapov S. Analysis of the possibility of using R718 for a heat pump of a heating system based on a liquid-vapor ejector [Електронний ресурс] / S. Sharapov, D. Husiev, V. Panchenko, V. Kozin, V. Baha // Восточно-Европейский журнал передовых технологий. - 2020. - № 6(8). - С. 39-44. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2020_6(8)__6 The study explores the possibility of using water (R718) as a refrigerant for a heat pump installation of a heating system. This unit is a vapor compression heat pump with a regenerative heat exchanger in which the vacuum unit based on a liquid-vapor ejector is used instead of a scroll refrigeration compressor. The working process of such an apparatus is based on implementing a fundamentally new cycle that does not require the supply of working steam from the outside. Instead, steam is generated inside the vacuum unit. The article describes the proposed installation and its differences from the traditional one, both in terms of circuit solutions and in terms of the operating cycle. A thermodynamic calculation was performed for the proposed installation with R718 as the working medium and the traditional heat pump systems operating on refrigerants R142b, R254fa, and R410a. As a result of the calculation, the parameters of all the devices included in these schemes were obtained, and the conversion factors of the cycles were determined. To assess the feasibility of using R718 as a working substance and replacing the scroll refrigeration compressor with a liquid-vapor ejector, an exergy analysis was performed. This made it possible to fairly accurately determine the effectiveness of each circuit, since it implemented the possibility of comparing systems using several types of energy (for example, electrical and thermal). As a result, the values of exergetic efficiency of traditional and proposed schemes were obtained. The final stage of the study was the performance of a thermoeconomic analysis. The estimated cost was determined for a unit of heat quantity per ton of the product and per unit of the heated area obtained in a unit with the working substance R718 and traditional installations with the working substances R142b, R254fa, and R410a. | ||
| 5. |
Kozin V. Yu. Determination of fighting styles of qualified veteran boxers based on cluster analysis of biomechanical and psychophysiological indicators [Електронний ресурс] / V. Yu. Kozin, O. Ye. Falova, M. Cretu, M. Cieślicka // Health, sport, rehabilitation. - 2021. - № 7(4). - С. 19-34. - Режим доступу: http://nbuv.gov.ua/UJRN/hsr_2021_7(4)__4 | ||
| 6. |
Kozin V. Yu. Individual Factorial Structure of Biomechanical and Psychophysiological Indicators as a Basis for Determining the Fighting Style of Qualified Veteran Boxers [Електронний ресурс] / V. Yu. Kozin, Yu. D. Boychuk, A. V. Skaliy, R. M. Zelenskiy, V. I. Honcharenko, M. Cieślicka, M. Bejtka // Health, sport, rehabilitation. - 2021. - № 7(3). - С. 8-30. - Режим доступу: http://nbuv.gov.ua/UJRN/hsr_2021_7(3)__3 | ||
| 7. |
Sharapov S. Improving the efficiency of condensation installations of steam turbines by applying liquid-vapor ejector [Електронний ресурс] / S. Sharapov, S. Yevtushenko, V. Panchenko, V. Kozin, O. Ivchenko // Eastern-European journal of enterprise technologies. - 2022. - № 4(8). - С. 44-51. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2022_4(8)__6 This paper considers the possibility of using liquid-vapor ejectors in condensing units of steam turbines. This unit is designed for pumping out a steam-air mixture from a steam turbine condenser, in which the process occurs at a pressure lower than atmospheric. In the traditional scheme, this is provided by a two-stage steam-jet ejector unit. The proposed scheme involves the use of a single-stage liquid-vapor ejector and its possible pre-vacuum mode of operation in conjunction with a liquid-ring vacuum pump. A working process of the liquid-vapor ejector does not require the supply of working steam from the outside since its generation occurs in the active nozzle of the liquid-vapor ejector. A description of the traditional scheme and the proposed options is given, which are different both in the scheme solution and in the operating parameters. The object of this study is a liquid-vapor ejector, which is used in the condensing system of a steam turbine. Thermodynamic calculation of the proposed circuit solutions was carried out. As a result, the necessary mode parameters of the schemes were determined. To assess the feasibility of using a liquid-vapor ejector in the condensation systems of steam turbines, an exergy analysis was performed. The proposed scheme makes it possible to increase efficiency by 2,3 times, and when used with a liquid-ring vacuum pump - by 2,44 times. To assess the economic efficiency of the modernization of the condensing system, thermoeconomic analysis was performed. The use of the proposed scheme makes it possible to reduce the cost of generating boiler steam and reduce the cost of the resulting product of the steam turbine unit by about 51 %. The estimated cost of a unit of the amount of boiler steam consumed per ton of product and the unit cost of steam were established. | ||
| 8. |
Kozin V. Yu. Biomechanical and psychophysiological features of qualified veteran boxers of various fighting styles [Електронний ресурс] / V. Yu. Kozin, M. S. Omelchenko, I. Kh. Turchyk, I. V. Yesman // Health, sport, rehabilitation. - 2022. - № 8(1). - С. 8-27. - Режим доступу: http://nbuv.gov.ua/UJRN/hsr_2022_8(1)__3 | ||
| 9. |
Potop V. Changes in circumference sizes of bodybuilders using machine and free weight exercises in combination with different load regimes [Електронний ресурс] / V. Potop, V. Manolachi, A. Chernozub, V. Kozin, E. Syvokhop, A. Spivak, V. Sharodi, Z. Jie // Health, sport, rehabilitation. - 2023. - № 9(2). - С. 74-85. - Режим доступу: http://nbuv.gov.ua/UJRN/hsr_2023_9(2)__8 | ||
| 10. | 
Kozin V. Yu. Training basketball players technology of of student teams of the humanitarian profile higher education institutions [Електронний ресурс] / V. Yu. Kozin, V. V. Matlaiev // Health technologies. - 2023. - № 1(4). - С. 31-45. - Режим доступу: http://nbuv.gov.ua/UJRN/HT_2023_1(4)__5 | ||
| 11. | 
Kozina Zh. L. Combination of physical exercises and poems about nature as an integral method of development of preschool children [Електронний ресурс] / Zh. L. Kozina, V. Yu. Kozin, I. Hruts, K. Ptushkina, O. Khyzhnyak, M. Prutyana // Health-saving technologies, rehabilitation and physical therapy. - 2021. - № 2021. - С. 63-75. - Режим доступу: http://nbuv.gov.ua/UJRN/HSTRPT_2021_2021_12 | ||
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