| Autor: |
Burdo, O. G., Gavrilov, A. V., Sirotyuk, I. V., Ruzhitskaya, N. V., Goncharov, D. S. |
| Zdroj: |
Surface Engineering & Applied Electrochemistry; Jun2022, Vol. 58 Issue 3, p290-298, 9p |
| Abstrakt: |
This work is devoted to creating an energoefficient apparatus design for concentration solutions and the engineering methods of its calculation. The results of the complex studies of electrodynamic vacuum-evaporation apparatuses are presented. The scientific and technical concept of the directed energy action technology applicable to the electrodynamic apparatuses is substantiated. The system analysis is given for the energetics of the traditional dehydration equipment. The electric thermal energy method was used to determine their technologic and energy problems. The way these problems are solved in the electrodynamic apparatuses is shown. The physical scheme and mathematical model of the electrodynamic vacuum-evaporation apparatus of continuous operation are developed. Assumptions that take into account the evaporation specificity under the electromagnetic field are formulated. The system of differential equations establishing the interaction between the solution and electromagnetic field under vacuum is presented. The nonstationary model with the use of the methods of the similarity theory and "dimension analysis" was transformed into ratios in dimensionless alternatives. The experimental modeling problems were determined. The results of the complex experimental studies into the microwave vacuum-evaporation apparatuses are presented. The effects of electromagnetic field power, the type and concentration of solution, and the level of pressures on the evaporative capacity were determined. The constants of equation in the summarized alternatives that with an error within 8% establishes connection between the number of the energy action and dimensionless complexes, which characterize the technological parameters, are defined. The major results of this work are the design of the module of the vacuum microwave, continuously operating evaporation apparatus and the data of its bench-tests. It is shown that the created apparatus ensures the product concentration to 90 obrix at a temperature to 40oC and energy consumption to 2.7 MJ per 1 kg of evaporated moisture. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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