The design of a flat-chamber type of electrobaromembrane device for cleaning technological solutions of chemical, machine-building and agroprocessing industries is updated. The design of such a device is analyzed and the operation of the device is described. The developed design of the device makes it possible to increase the solution separation area, reduce the hydraulic resistance in the overflow channels for circulation of the separated solution, increase the productivity and efficiency of solution separation, and reduce stagnation in the cathodic and anodic permeate removal path.
In this work, the fine structure and mechanical properties of the surface white layer of 60S2A steel subjected to combined strengthening by electromechanical treatment with finishing surface plastic deformation are studied. The electron microscopy results of the fine structure of the surface white layer are analyzed. Moreover, comparative assessment of the transformation of the structure, corrosion, and temperature strength of the surface-hardened layer after exposure to aggressive environments (exposure to NaCl and heating to a temperature of 400 °C) associated with the specific operating conditions of the parts is provided.
С использованием модуля для вычислительной гидродинамики проведены расчёты режимных параметров работы запатентованного пластинчатого теплообменника с пластинами с каплевидным рельефом и с типовыми гофрированными пластинами. Установлено, что в запатентованном теплообменнике обеспечиваются меньшие энергетические затраты на перекачивание теплоносителей при равенстве количества передаваемой теплоты. Calculations of operating parameters of a patented plate heat exchanger with plates with drop-shaped relief and with typical corrugated plates have been carried out using a module for computational fluid dynamics. It is established that the patented heat exchanger provides less energy costs for pumping heat carriers at the same amount of transferred heat.
Herein, we discuss designs of single- and multidisc grinding tools for formation of sealing surfaces (SSs) of valves of pipe fittings. We study on the effect of microcutting on the parameters of “undulation” and “roughness,” following which the surface quality of the SS is evaluated. While processing the measurement results, the programs Microsoft Excel and Statistica 6.1.478 are used to reduce the time of research and determine optimal processing modes.
The paper presents a method for calculating the thermodynamic parameters of refrigerant vapors during their compression in a scroll compressor. The method takes the properties of a refrigerant as a real gas into account, as well as the process of mixing two vapor portions inside the scroll unit when the full geometric degree of compression is reached.
