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Showing 1 to 20 of 73 for “"Microwave heating"”.
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Modeling hotspot dynamics in microwave heating
… in a cylindrical medium that is undergoing microwave heating is studied in detail. A mathematical model developed by Garcia-Reimbert, C., Minzoni, A. A. and Smyth, N. in Hotspot formation and propagation in Microwave Heating, IMA, Journal of Applied Mathematics (1996), 37, p. 165-179 is …
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Simulation of Microwave Heating of Mullite Rods
Microwave processing has been studied as an alternate heating technique over conventional heating for industrial applications. Some advantages include quicker and more uniform heating. Also, microwave energy offers the advantage of localized heating and smaller-sized equipment. Many ceramics, …
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Design of microwave heating equipment for laboratory applications
General purpose pressure vessels for digestion in microwave ovens have been developed and their applications investigated. The vessels were manufactured from PTFE and polypropylene and included a safety valve. The easily manufactured vessels were found to be reliable for a wide range of samples. A …
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Evaluation and design of polymer systems for enhanced microwave heating
Microwave heating of different polymer systems (epoxy-amine. polypropylene-iron, carbon-black-filled perfiuoroelastomer) was evaluated using dielectric testing and monitored processing in a multimode microwave cavity. Dielectric measurements were made using a field perturbation technique and a …
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Field Simulation for the Microwave Heating of Thin Ceramic Fibers
Microwave processing of ceramics has seen a growth in research and development efforts throughout the past decade. One area of interest is the exploration of improved heating control through experiments and numerical modeling. Controlled heating may be used to counteract non-uniform heating and …
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Microwave heating of a coating on a temperature-sensitive substrate
Microwave heating has been considered for the heating of a coating in contact with a temperature-sensitive substrate. A methodology was developed to conduct a microwave heating feasibility study for a candidate system. The study consisted of dielectric property determination, development of heat …
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Experimental and Theoretical Study of Microwave Heating of Thermal Runaway Materials
There is growing interest in the use of microwaves to process materials. The main application of microwave processing of materials is in heating. The most important characteristic of microwave heating is {\it volumetric} heating, which is quite different from conventional heating where the heat …
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Multi-mode cavity effects in the microwave heating of a ceramic slab
… to gain insight into hot spot development in microwave heated ceramics, a partially insulated, two dimensional ceramic slab situated in a TE_{M01} cavity is modeled in the small Biot number limit. If the electrical conductivity is an exponential function of temperture and E_0 is the strength …
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Fully coupled CEM/CFD modelling of microwave heating in a porous medium
Computational results for the microwave heating of a porous material are presented in this paper. Coupled finite difference time domain and finite volume methods are used to solve equations that describe the electromagnetic field and heat and mass transfer in porous media. These equations are …
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Continuous production of two archetypal metal-organic frameworks using conventional and microwave heating
… the possibilities of using unconventional heating methods such a microwave heating in order to exploit the potential benefits of this heating technique. MOF-5, with structure Zn₄O(BDC)₃ (BDC = benzene dicarboxylate) is one of the most commonly synthesized MOFs with potential applications …
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Effect of Fat Content and Food Type on Heat Transfer during Microwave Heating
Microwaves heat food rapidly and foods are prepared in less time. However, due to non-uniform heating nature of microwave cooking, there exists a serious concern over complete elimination of pathogens in the food. There has been an increase in interest to accurately understand the behavior of …
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The effects of microwave heating on the properties of raw unextracted soybeans for utilization by the chick
Thesis (M.S.)--Michigan State University. Dept. of Poultry Science, 1969
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Numerical simulation of microwave heating of a target with temperature dependent electrical properties in a single-mode cavity
… the work done by Hue and Kriegsmann in 1998 on microwave heating of a ceramic sample in a single-mode waveguide cavity. In that work, they devised a method combining asymptotic and numerical techniques to speed up the computation of electromagnetic fields inside a high-Q cavity in the presence …
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Modeling microwave heating of apple cylinders using hybrid mixture theory based transport equations coupled with Maxwell's laws of electromagnetism
To develop an efficient microwave drying scheme for apple cylinders, a multiscale mathematical model was developed to predict the moisture and temperature profiles. Two-scale hybrid mixture theory (HMT) based transport equations were utilized to describe the fluid (water & gas phases) transport …
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A Coupled Heat Transfer and Electromagnetic Model for Simulating Microwave Heating of Thin Dielectric Materials in a Resonant Cavity
Microwave heating is an emerging but still underutilized tool in modern industrial applications. The task of designing microwave applicators for heating industrial materials with temperature-dependent properties is challenging, and trial-and-error system prototyping is an expensive and wasteful …
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Remote three-dimensional temperature sensing using planar laser induced fluorescence : development and applications to microwave heated liquids
Microwave heating is an important technology that has been hampered in application by difficulties in measuring temperatures and temperature distributions during the microwave heating process. This thesis describes the development of a 3D imaging fluorescence thermometry system that was used to …
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Numerical Simulations of Thermo-Fluid Phenomena in Microwave Heated Packed and Fluidized Beds
Microwave heating is implemented in various fields such as drying, material processing, and chemical reactors. Microwaves offer several advantages over conventional heating methods: 1) microwaves deposit heat directly in the material without convection or radiation, 2) microwave heating is easy and …
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