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Copyright of Technical Electrodynamics / Tekhnichna Elektrodynamika is the property of National Academy of Sciences of Ukraine, Institute of Electrodynamics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of KNUTD is the property of Kyiv National University of Technology & Design (KNUTD) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The change in average volume temperature of the product (on the example of meat) when it is cooled is considered in the paper. Various calculation methods are used. An important value when calculating the amount of heat (heat flux) released from the product when it is cooled is the average volume of temperature. The easiest way to determine it is to measure an average of the arithmetic mean of surface temperature and product center. There is also a series of formulas - analytic, empirical for its definition. For analytical calculations of product temperatures: the average volume temperature, the surface temperature and the center temperature, it is necessary to take into consideration in the formulas not only the Fourier criterion (internal problem), but also the criterion Bio (external). It is not always correct that in case when the values of the Fourier criterion are less than one, the possibility of a product to give off heat is lower (due to the low coefficient of temperature conductivity that is characteristic of any product) than the ability of the cooling medium to accept this heat. In the conditions of air cooling the values of the thermophysical characteristics of the air are also not high, that’s why the increase in the temperature in the chamber at the initial moment of time is observed[ 1, 2]. It should also be taken into account that the chamber equipment is selected according to the average thermal load, and its ability to remove heat from the air is not sufficient in the initial period of the product cooling. [ABSTRACT FROM AUTHOR]

Among the main components that largely affect the operational reliability of centrifugal pumps are bearing assemblies. Based both on the generalization of theoretical data and practical skills in selecting bearings, specialists of JSC VNIIAEN developed basic design modules, in which a general approach to the selection and analysis of the performance of bearing assemblies is laid. These design modules can work either as separate units or as part of an integrated module that allows us to calculate the thermal balance of the bearing assembly system with taking into account a number of factors, such as lubrication conditions, cooling methods, mandatory verification of the recommended design features of both individual system elements and basic critical performance indicators of a bearing. Functional cause-effect relationships of the module can help better understand the problems that arise during the operation of bearings. This paper discusses JSC VNIIAEN’s in-house design modules for selecting pump bearing assemblies, and proposes a new method for designing bearing assemblies, with the method based on the integrated use of individual modules represented as an integrated module in the form of a computer-aided design (CAD) system. The flexibility of the methodology used allows us to supplement and improve the developed design modules included in the integrated module in the form of a CAD system by using the results of scientific research, feedback from operational locations, and constant monitoring of various information sources.