Evaporators with Induction Heating and Their Applications

Kuzmichev, A. I.; Tsybulsky, Leonid

doi:10.5772/13934

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…У разі газового або парового середовища вільні електрони, отримавши енергію від ВЕП, здатні іонізувати атоми/молекули і переводити середовище в плазмовий стан, тобто підтримувати індукційний електричний розряд (у англомовній літературі -іnductіve coupled plasma, ІCP) [10], [11]. Відомі пристрої, в яких ВЕП використовується для нагрівання речовини з метою випаровування та іонізації пари для осадження покриттів з одночасним бомбардуванням покриття власними іонами для покращення якості покриттів [6]- [8].…”

Section: Iunclassified

Physical-Topological Modeling of Electronic Devices with Induction Heating of Particle Emitters

Shynkarenko

Maikut

Tsybulskyi

et al. 2022

Microsyst., Electron. & Acoust.

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The general principles of physical and topological modeling and construction of algorithms for calculations of a wide range of electronic devices with induction heating of functional elements up to temperatures at which thermoelectronic emission and/or evaporation of the working substance in the atomized state are considered. The direction of physical-topological modeling was chosen due to the possibility of detailed analysis, based on the primary principles for related physical processes in devices, taking into account the impact of physical properties of functional elements and their design and topological (i.e. geometric) parameters. Thus, the results are obtained by solving a system of fundamental equations, which usually include Newton's and Maxwell's equations, the conservation laws of particles, charge, energy and momentum, as well as material properties, boundary and initial conditions. The set of equations is determined by the number of processes that significantly affect the operation of devices. The construction of the device model is based on the consistent hierarchy of elementary physical processes with the sequential transfer of the results of calculations for lower-level models to higher-level models in the form of initial conditions. The original mathematical models of elementary processes are represented by systems of integral-differential equations with partial derivatives in continuous space and continuous time and belong to the class of distributed mathematical models. Methods for solving the system of equations are considered. On the example of a vacuum metal evaporator with induction heating for thermovacuum coating deposition, the procedure of decomposition of the general physical process in the evaporator with a concentrator as a step-down transformer is given and the hierarchy of elementary processes is clarified. Typical initial and boundary conditions for calculating related physical processes are determined. The available application computer soft packages for the calculation of physical and topological models of various induction devices are considered. In the final part of the article it is considered the structure and structure of physical-topological models of devices with induction heating of particle emitters: i) the thermoionic metal evaporator with ionization of vapor by electrons emitted by a thermocathode from an alloy with low electron output, the cathode is made in the form of an insert on the upper end of the crucible, and ii) the X-ray tube with an inductively heated thermoelectron cathode. Calculation results of the electromagnetic field and current distribution, heat exchange in vapor and electron emitters and their emission fluxes, as well as the trajectories of emitted electrons are presented. Analysis of electron trajectories allowed to optimize the topology and design of these devices.

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Section: Iunclassified

Physical-Topological Modeling of Electronic Devices with Induction Heating of Particle Emitters

Shynkarenko

Maikut

Tsybulskyi

et al. 2022

Microsyst., Electron. & Acoust.

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“…It is also possible to find induction in many different heating processes, such as sterilization of medical equipment, asphalt heating and etc. [16].…”

Section: Introductionmentioning

confidence: 99%

Analysis of a novel high performance induction air heater

et al. 2018

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This study represents an experimental and numerical investigation of the enhanced prototypes of the induction air heaters. For this purpose, flow field is enhanced in order to avoid turbulence. The air mass flow rate, outlet construction and the application of insulation of the outer surface of the heater were selected as the performance enhancing parameters. Depending on the exit construction, the new designed prototypes are named as K-2 and K-3. Experiments were performed under two groups for three various flow rates. In the first group, non-insulation situation is examined. In the second group tests, insulation is applied to the outside of windings and inlet-outlet flaps which constitute the boundary of the control volume for the prevention of heat losses. The increasing flow rate boosted the thermal efficiency by 9%. Each of insulation and enlarging exit cross section increased the thermal efficiency by 13%. It was observed that the thermal power transferred to air with the new prototypes increased about 246 W more than the previous designs. The thermal efficiencies of the K-2 and K-3 type heaters were calculated as 77.14% and 87.1%, respectively.

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