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infrared heating Technology for Automated Fiber Placement

Transactions of Nanjing University of Aeronautics and Astronautics 2015年第6期32卷 631-638页

作者：文立伟孙天峰倪金辉朱腾飞 College of Material Science and Technology Nanjing University of Aeronautics and Astronautics

Prepreg stickiness is the adhesion between prepregs or between a prepreg and a mold in lay-up process.It is critical for automated fiber placement,because the stickiness should be small for smooth transport,as well as large enough on the laying surface for a good placement performance.To ensure prepreg stickiness always being in the optimum laying window,placement temperature should be changed according to the laying speed.In our work,the relationship between laying speed and emissive power of heating lamp was studied.The heat transfer process between heating lamp and laying surface was analyzed and the control equation of dynamic temperature was derived.Finally,the infrared heating system was built and its effectiveness was verified based on placement experiment.

关键词： automated fiber placement infrared heating stickiness temperature control

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Secondary cracking of volatile and its avoidance in infrared-heating pyrolysis reactor

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Carbon Resources Conversion 2018年第3期1卷 202-208页

作者： Somprasong Siramard Jin-Hui Zhan Zhennan Han Shipei Xu Ondřej Mašek Guangwen Xu State Key Laboratory of Multi-phase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Institute of Industrial Chemistry and Energy Technology Shenyang University of Chemical TechnologyShenyang 110142China University of Chinese Academy of Sciences Beijing 100049China UK Biochar Research Centre School of GeosciencesCrew BuildingThe King's BuildingsUniversity of EdinburghEdinburghEH93FFUK

This study aims to compare the pyrolysis behavior of Huadian oil shale in two infrared heating fixed bed reactors with different directions of infrared beam.Our previous work has shown that fast pyrolysis of oil shale conducted in the shallow fixed bed infrared heating reactor(co-current)presented the massive secondary reactions,which lowered the shale oil production(Siramard et al.,2017).Conversely,the cross-current infrared achieved shale oil yields higher than the Fischer Assay oil yield(13.07 wt%of dry basis),such as 117.7%of the Fischer Assay yield at our realized highest heating rate of 7℃/s under a specified pyrolysis temperature of 550℃.The shale oil from the cross-current infrared heating reactor was obviously heavier than the oil obtained from the cocurrent heating reactor.Thus,the infrared cross heating evidently suppressed the secondary reactions toward volatile.Our realized shale oil yield could reach 13.67 wt%or 122.5%of the Fischer Assay yield under reducing pyrolysis pressure of 0.6 atm,indicating that lower pressure is also beneficial to the release of volatile and reduction of the secondary cracking reactions.This work shows essentially that the infrared cross heating provides an effective merge of the advantages from quick heating and minimization of secondary cracking reactions to enable the shale oil yields being higher than the Fischer Assay oil yield.

关键词： Pyrolysis Secondary cracking Volatile infrared heating Oil shale

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Coupled heat and moisture transfer of a single mung bean grain based on IR heating

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International Journal of Modeling, Simulation, and Scientific Computing 2017年第2期8卷 25-38页

作者： Maninder Meenu Paramita Guha Sunita Mishra Academy of Scientific&Innovative Research CSIR-Central Scientific Instruments Organisation Chandigarh 160030India CSIR-Central Scientific Instruments Organisation Sector 30C Chandigarh160030India

infrared(IR)heating is often used for the treatment of liquid and solid foods.IR treatment is known to enhance their shelf life by reducing moisture content and inactivating the microorganisms.Mung bean(a type of pulse from India)is a short season crop;suffers maximum storage loss when compared to other legume grains.The losses are due to moisture and temperature movements.Drying of grains is an important postharvest operation.IR drying is advantageous over the conventional drying methods.In this paper,the drying of mung bean is considered.An experimental setup is developed to obtain the required moisture and temperature profiles.The equivalent model is simulated using COMSOL multiphysics software and the percentage error between the experimental and simulated models is calculated.Results of numerical implementation are presented and possible further extensions are identified.

关键词： Mung bean infrared heating finite element modeling simulation COMSOL multiphysics.

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