In the paper proposes a method for the numerical study of temperature deformations of cooled selflubricating turbo-compressor bearings, the cooling system of which is implemented by the «water jacket» type based on the ANSYS CFX. Approbation of the method is implemented on the example of a low-flow turbine unit with a console arrangement of two bearing units. The method of engineering analysis in terms of temperature deformations, taking into account the temperature field corresponding to the actual operating conditions, provides an acceptable deviation in the calculation results.

The paper presents a theoretical assessment of the effect of the piston speed on the energy efficiency of a steam compression refrigeration cycle based on compression in the area of wet steam, implemented in a low-speed refrigeration compressor stage. The refrigerant R134a was chosen as the working fluid. The numerical calculation of the working process of a refrigeration compressor operating in the field of wet steam was carried out on the basis of a mathematical model and implemented using the Runge– Kutta method of the 4th order in the MathCad package. The calculation of heat transfer was carried out according to the generalized formula for film boiling — condensation inside the pipes. Based on the calculation, the analysis of the effect of the piston speed on the characteristics of the compressor workflow, in particular, on the appearance of its indicator diagram, was carried out.

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Омский государственный технический университет, г. Омск 2 ПАО «ОНХП», г. Омск РАйкОВСкий николай Анатольевич, кандидат технических наук, доцент (Россия), доцент кафедры «Холодильная и компрессорная техника и технология» Омского государственного технического университета.

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