Dynamic Model for a Uniform Microwave-Assisted Continuous Flow Process of Ethyl Acetate Production

Wu, Yuanyuan; Hong, Tao; Tang, Zhengming; Zhang, Chun

doi:10.3390/e20040241

Cited by 4 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unlike traditional heating methods that heat materials by radiation, convection and conduction, microwaves heat materials through the direct interaction with the inner polar molecules and charged particles of materials [1]. Thus, characterized as efficient heating, volumetric heating and selective heating [2][3][4][5][6], microwave heating has been rapidly developed and applied in various areas.…”

Section: Introductionmentioning

confidence: 99%

Impact of Filled Materials on the Heating Uniformity and Safety of Microwave Heating Solid Stack Materials

et al. 2018

Self Cite

View full text Add to dashboard Cite

Microwave heating of solid stack materials is common but bothered by problems of uneven heating and electric discharge phenomena. In this paper, a method introducing fluid materials with different relative permittivity is proposed to improve the heating uniformity and safety of solid stack materials. Simulations have been computed based on the finite element method (FEM) and validated by experiments. Simulation results show that the introducing of fluid materials with proper relative permittivity does improve the heating uniformity and safety. Fluid materials with the larger real part of relative permittivity could obviously lower the maximum modulus value of the electric field for about 23 times, and will lower the coefficient of variation (COV) in general, although in small ranges that it has fluctuated. Fluid materials with the larger imaginary part of relative permittivity, in a range from 0 to 0.3, can make a more efficient heating and it could lower the maximum modulus value of the electric field by 34 to 55% on the whole studied range. However, the larger imaginary part of relative permittivity will cause worse heating uniformity as the COV rises by 246.9% in the same process. The computed results are discussed and methods to reach uniform and safe heating through introducing fluid materials with proper relative permittivity are proposed.

show abstract

Section: Introductionmentioning

confidence: 99%

Impact of Filled Materials on the Heating Uniformity and Safety of Microwave Heating Solid Stack Materials

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“… A comparative study [ 8 ] is made of deposition equilibrium of carbon nanotubes compared to graphite for the reforming processes involving liquid petroleum gas (dry process) and natural gas (wet process). Studies are related to the modelling of a continuous, microwave-assisted ethyl acetate production process, the aim being to enhance production [ 9 ]. The study involves variable initial flow rate velocities coupled with simulation of various temperature profiles which are checked experimentally using optical fibers.…”

mentioning

confidence: 99%

“…Studies are related to the modelling of a continuous, microwave-assisted ethyl acetate production process, the aim being to enhance production [ 9 ]. The study involves variable initial flow rate velocities coupled with simulation of various temperature profiles which are checked experimentally using optical fibers.…”

mentioning

confidence: 99%

Thermodynamics in Material Science

Glasser

Jenkins

2018

Entropy

View full text Add to dashboard Cite

Authors were invited to offer papers dealing with Thermodynamics in Material Science, noting that thermodynamics has two traditional aspects: the generation of experimental data (then collected into databases) and the theoretical relationships which exist between different data types.The papers included in this Special Issue showcase both the strength and the scope of modern-day thermodynamics in the material sciences and related areas, with contributions from Estonia, Russia, China, Poland, Germany, Hungary, USA and Canada. Thus we have presentations dealing with theoretical matters, experimental studies of alloy systems, chemical processes, and the consequences of mechanical processes. In fact, the highly specific nature of many of the papers displays the versatility of modern thermodynamics in its broad coverage of these topics.This issue considers a number of highly relevant concerns which include: . There are clear thermodynamic trends demonstrating, for example, that their kinetic fragility is directly connected to their excess specific heats. This seems to be related to the fact that increasing numbers of differently-sized species in the mix produce greater densities. •The entropy increase brought about by fatigue occurring in soldering materials [6] is examined and confirmed using experimental studies. •The behavior of transformation optics in order to monitor heat flux in a new class of metamaterials [7] is reported.• A comparative study [8] is made of deposition equilibrium of carbon nanotubes compared to graphite for the reforming processes involving liquid petroleum gas (dry process) and natural gas (wet process). •Studies are related to the modelling of a continuous, microwave-assisted ethyl acetate production process, the aim being to enhance production [9]. The study involves variable initial flow rate velocities coupled with simulation of various temperature profiles which are checked experimentally using optical fibers. The results are relevant to a large scale microwave-induced production process for the ester. •The frictional properties of diamond films [10] have been studied. Such films are important due to their ability to self-lubricate by the formation of a carbonaceous interface between themselves and

show abstract