Application of alternating electric field scale inhibition device in heat exchange station

Abstract Electric field scale inhibition is one of the most promising methods of scale inhibition. In this study, an alternating variable frequency electric field device is presented, it able to prevent the growth of scale in industrial heat exchange equipment effectively. Conduct field test at the heat exchange station to analyze the scale inhibition performance of the device. The test results showed that after using alternating variable frequency electric field device, the scale thickness on the heat exchange surface is significantly reduced, fouling resistance reduced by more than 58%, and the anti-corrosion rate for Fe element content reaches 19.78%, The SEM image of the scale changes from a dense irregular sharp shape to a loose spherical shape. Conclusively, alternating variable frequency electric field device has grate scale inhibition performance. This is of great significance to the field of heat transfer and energy saving.

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S. I. Kostin and the emergence of studies into the biological effects of alternating electric field in the Russian Empire

Вопросы истории естествознания и техники ◽

10.31857/s020596060007322-6 ◽

2019 ◽

Vol 40 (4) ◽

pp. 670-683

Keyword(s):

Electric Field ◽

Biological Effects ◽

Russian Empire ◽

Alternating Electric Field ◽

The Russian Empire

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Formation of Regular Domain Structures in Quenched Ferroelectrics Under the Influence of an External High-frequency Electric Field

Nanoscience &Nanotechnology-Asia ◽

10.2174/2210681208666180626124705 ◽

2019 ◽

Vol 9 (3) ◽

pp. 344-352 ◽

Cited By ~ 4

Author(s):

L.I. Stefanovich ◽

O.Y. Mazur ◽

V.V. Sobolev

Keyword(s):

Lithium Niobate ◽

Electric Field ◽

Domain Structure ◽

High Frequency ◽

Evolution Equations ◽

Regular Domain ◽

Field Frequency ◽

Domain Structures ◽

Alternating Electric Field ◽

Lithium Niobate Crystals

Introduction: Within the framework of the phenomenological theory of phase transitions of the second kind of Ginzburg-Landau, the kinetics of ordering of a rapidly quenched highly nonequilibrium domain structure is considered using the lithium tantalate and lithium niobate crystals as an example. Experimental: Using the statistical approach, evolution equations describing the formation of the domain structure under the influence of a high-frequency alternating electric field in the form of a standing wave were obtained. Numerical analysis has shown the possibility of forming thermodynamically stable mono- and polydomain structures. It turned out that the process of relaxation of the system to the state of thermodynamic equilibrium can proceed directly or with the formation of intermediate quasi-stationary polydomain asymmetric phases. Results: It is shown that the formation of Regular Domain Structures (RDS) is of a threshold character and occurs under the influence of an alternating electric field with an amplitude less than the critical value, whose value depends on the field frequency. The conditions for the formation of RDSs with a micrometer spatial scale were determined. Conclusion: As shown by numerical studies, the RDSs obtained retain their stability, i.e. do not disappear even after turning off the external electric field. Qualitative analysis using lithium niobate crystals as an example has shown the possibility of RDSs formation in high-frequency fields with small amplitude under resonance conditions

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