2011 IEEE International Conference on Dielectric Liquids最新文献_第8页

Collection efficiency of electrons injected into dense argon gas by means of photoelectric effect 利用光电效应向致密氩气中注入电子的收集效率

2011 IEEE International Conference on Dielectric Liquids Pub Date : 2011-06-26 DOI: 10.1109/ICDL.2011.6015403

A. F. Borghesani, P. Lamp

引用次数: 0

Dissolved gas analysis of alternative dielectric fluids under thermal and electrical stress 热和电应力作用下交替介质的溶解气体分析

2011 IEEE International Conference on Dielectric Liquids Pub Date : 2011-06-26 DOI: 10.1109/ICDL.2011.6015457

M. Jovalekic, D. Vuković, S. Tenbohlen

引用次数: 39

Review of requirements and diagnostics of oil/board DC-insulation systems 审查油/板直流绝缘系统的要求和诊断

2011 IEEE International Conference on Dielectric Liquids Pub Date : 2011-06-26 DOI: 10.1109/ICDL.2011.6015420

J. Fabian, R. Woschitz, M. Muhr, C. Krause, U. Piovan

引用次数: 4

Charge carriers and electrical conductivity in fluid molecular dielectrics under wide pressure range 宽压力范围下流体分子电介质中的电荷载流子和电导率

2011 IEEE International Conference on Dielectric Liquids Pub Date : 2011-06-26 DOI: 10.1109/ICDL.2011.6015494

K. Yoshino, A. Khrapak

{"title":"Charge carriers and electrical conductivity in fluid molecular dielectrics under wide pressure range","authors":"K. Yoshino, A. Khrapak","doi":"10.1109/ICDL.2011.6015494","DOIUrl":"https://doi.org/10.1109/ICDL.2011.6015494","url":null,"abstract":"Fluid hydrogen, oxygen, and nitrogen at very high pressures and temperatures demonstrate high conductivity close to the so-called “minimum metal conductivity”. Electrophysical properties of these liquids in the semi-conducting transition region are practically unknown. In this work a simple model is used for estimating the bottom energy of the electron conduction band and the electron-forbidden gap energy. It is shown that electrons in liquid hydrogen, oxygen, and nitrogen are localized as molecular negative ions surrounded by voids about 0.3–0.5 nm in radius. The conductivity of these fluids at not very high pressures is connected to the transfer of positively charged clusters and negatively charged bubbles created around negative ions. As the pressure and density increase, molecular dissociation occurs and electron localization on atoms becomes more favorable, also with the creation of a void around atomic negative ions. At a sufficiently high concentration of atoms, the probability of the tunnel transition of an electron from one atom to another becomes close to unity, the energy level of the negative ion degenerates in the band, and the conductivity is caused by the transfer of these quasifree electrons. It is supposed that this charge transfer mechanism may play an important role in the dielectric-metal transition region.","PeriodicalId":364451,"journal":{"name":"2011 IEEE International Conference on Dielectric Liquids","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125011795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal aging and degradation of thin films of natural ester dielectric liquids 天然酯类介电液体薄膜的热老化与降解

2011 IEEE International Conference on Dielectric Liquids Pub Date : 2011-06-26 DOI: 10.1109/ICDL.2011.6015478

J. Viertel, K. Ohlsson, S. Singha

引用次数: 19

Mineral oil lifetime estimation using activation energy 利用活化能估算矿物油寿命

2011 IEEE International Conference on Dielectric Liquids Pub Date : 2011-06-26 DOI: 10.1109/ICDL.2011.6015463

L. Badicu, L. Dumitran, P. Notingher, R. Setnescu, T. Setnescu

{"title":"Mineral oil lifetime estimation using activation energy","authors":"L. Badicu, L. Dumitran, P. Notingher, R. Setnescu, T. Setnescu","doi":"10.1109/ICDL.2011.6015463","DOIUrl":"https://doi.org/10.1109/ICDL.2011.6015463","url":null,"abstract":"Lifetime estimation of mineral oil is based on IEC 60216-1/2001, using accelerated thermal ageing at three temperatures), method which requires a long experimental time. In order to reduce the experimental times, this paper proposes a simpler method to draw the lifetime curve by determining an experimental point (carrying out only a thermal ageing at the highest temperature - which requires the least time) and curve slope (based on the activation energy of oxidation reaction). Assuming the volume resistivity and the loss factor as diagnostic factors, their variation curves with ageing time were drawn, and the lifetime values were calculated. Using differential calorimetry measurements (DSC curves) for four heating rates, the activation energy value Wa of oxidation reactions was obtained. Knowing the Wa value and the ageing time τ to achieve the end of life criterion for thermal ageing at the highest temperature (155 °C), the D3 lifetime value was determined and compared with D1 and D2 values obtained by accelerated thermal method at three temperatures. Finally is showed that, the differences between D3 and D1,2 values are relatively reduced and the method based on activation energy obtained by DSC, can be used to assess the lifetime of mineral oil.","PeriodicalId":364451,"journal":{"name":"2011 IEEE International Conference on Dielectric Liquids","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125620808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Charging tendency of mineral oils and synthetic ester mixtures 矿物油与合成酯混合物的充电趋势

2011 IEEE International Conference on Dielectric Liquids Pub Date : 2011-06-26 DOI: 10.1109/ICDL.2011.6015438

P. Poovamma, V. V. Pattanshetti, T.R. Afzal Ahmed, A. Sudhindra

引用次数: 3

Streamers in large paraffinic oil gap 拖缆在大石蜡油间隙

2011 IEEE International Conference on Dielectric Liquids Pub Date : 2011-06-26 DOI: 10.1109/ICDL.2011.6015465

N. V. Dung, F. Mauseth, H. Hoidalen, D. Linhjell, S. Ingebrigtsen, L. Lundgaard, M. Unge

引用次数: 2

Reforming of diesel fuel by a recirculation type pulsed voltage electrohydrodynamic atomization 再循环型脉冲电压电流体动力雾化重整柴油

2011 IEEE International Conference on Dielectric Liquids Pub Date : 2011-06-26 DOI: 10.1109/ICDL.2011.6015407

C. Ayrault, J. Chang, G. Harvel, D. Ewing, H. Hirata, S. Matsumoto, P. Fanson

引用次数: 0

Numerical analysis of the effect of an EHD actuator on the flow past a square cylinder EHD作动器对方圆柱流场影响的数值分析

2011 IEEE International Conference on Dielectric Liquids Pub Date : 2011-06-26 DOI: 10.1109/ICDL.2011.6015462

P. Traoré, C. Louste

引用次数: 2