Pub Date : 2008-10-01DOI: 10.1109/CEIDP.2008.4772788
G. Bruce, Simon M. Rowland, A. Krivda
The inclined plane test for tracking and erosion resistance of materials, IEC-60587, has become a routine tool for researchers developing high voltage outdoor insulation materials. The test is designed for ac applications and many laboratories have many years of experience with the technique. DC power systems are becoming more important and competitive in the market place. Often insulation systems designed for AC applications are utilised on dc systems. However, there is clear evidence of behavioural differences between identical materials under AC and DC stresses. An equivalent test to IEC-60587, has been developed and utilised for the dc case. A computer-based monitoring system is used to study materials beyond the criteria set by IEC 60587 and this system is reviewed in the paper. A number of different formulations of silicone rubber have been evaluated using the rig described. In this paper particular attention is given to the nature of electrical discharges under different test conditions and how this influences material degradation. Measurements show that the sample degradation mechanism is very different for positive and negative HVDC, while positive DC has shown to be the most aggressive for the materials tested.
{"title":"DC inclined-plane testing of silicone rubber formulations","authors":"G. Bruce, Simon M. Rowland, A. Krivda","doi":"10.1109/CEIDP.2008.4772788","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772788","url":null,"abstract":"The inclined plane test for tracking and erosion resistance of materials, IEC-60587, has become a routine tool for researchers developing high voltage outdoor insulation materials. The test is designed for ac applications and many laboratories have many years of experience with the technique. DC power systems are becoming more important and competitive in the market place. Often insulation systems designed for AC applications are utilised on dc systems. However, there is clear evidence of behavioural differences between identical materials under AC and DC stresses. An equivalent test to IEC-60587, has been developed and utilised for the dc case. A computer-based monitoring system is used to study materials beyond the criteria set by IEC 60587 and this system is reviewed in the paper. A number of different formulations of silicone rubber have been evaluated using the rig described. In this paper particular attention is given to the nature of electrical discharges under different test conditions and how this influences material degradation. Measurements show that the sample degradation mechanism is very different for positive and negative HVDC, while positive DC has shown to be the most aggressive for the materials tested.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76052186","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}
Pub Date : 2008-10-01DOI: 10.1109/CEIDP.2008.4772771
Markus Kuehn, Herbert Kliem
It is shown that the local electric field in a dielectric sphere of nanometric dimensions is not uniform as expected from macroscopic meanfield theory. A numerical method is presented which allows the microscopic calculation of these local fields. It is shown that for large diameters the microscopic calculations converge towards the macroscopic theory.
{"title":"Local Field versus Meanfield Theory for Dielectric Spheres","authors":"Markus Kuehn, Herbert Kliem","doi":"10.1109/CEIDP.2008.4772771","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772771","url":null,"abstract":"It is shown that the local electric field in a dielectric sphere of nanometric dimensions is not uniform as expected from macroscopic meanfield theory. A numerical method is presented which allows the microscopic calculation of these local fields. It is shown that for large diameters the microscopic calculations converge towards the macroscopic theory.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88407836","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}
Pub Date : 2008-10-01DOI: 10.1109/CEIDP.2008.4772886
Y. Hayase, Y. Tanaka, T. Takada
In this report, we tried to simulate the behavior of space charge injection in low-density polyethylene (LDPE) under relatively low electric stress. In our previous paper, we found an interesting packet-like charge behavior in LDPE under high DC electric field of more than 100 kV/mm. It is thought that the huge packet-like charge must strongly affect to breakdown characteristics of LDPE. To analyze the feature of the packet-like charge behavior in LDPE, we have carried out a simple numerical simulation based on the experimental results in the previous paper. In the proposed model, by giving a few parameters of the sample, we can easily simulate the packet-like charge behavior. To investigate which parameter is dominant for the packet-like charge behavior, we attempt to apply our proposed model to various kinds of polyethylene which show different packet-like behavior from that in LDPE. However, the space charge accumulation process in LDPE under around or below 100 kV/mm has not explained using the model yet. From the experimental results, it was identified the space charge spread uniformly in the bulk under relatively low electric stress. To explain the behavior using the proposed model, it is necessary to concern the complicated parameters of charge injection and conductivity distribution. Therefore, as a first step, we tried to fit the numerical simulation results to the actual experimental results.
{"title":"Numerical Simulation of Space Charge Injection in LDPE under Relatively Low Electric Stress","authors":"Y. Hayase, Y. Tanaka, T. Takada","doi":"10.1109/CEIDP.2008.4772886","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772886","url":null,"abstract":"In this report, we tried to simulate the behavior of space charge injection in low-density polyethylene (LDPE) under relatively low electric stress. In our previous paper, we found an interesting packet-like charge behavior in LDPE under high DC electric field of more than 100 kV/mm. It is thought that the huge packet-like charge must strongly affect to breakdown characteristics of LDPE. To analyze the feature of the packet-like charge behavior in LDPE, we have carried out a simple numerical simulation based on the experimental results in the previous paper. In the proposed model, by giving a few parameters of the sample, we can easily simulate the packet-like charge behavior. To investigate which parameter is dominant for the packet-like charge behavior, we attempt to apply our proposed model to various kinds of polyethylene which show different packet-like behavior from that in LDPE. However, the space charge accumulation process in LDPE under around or below 100 kV/mm has not explained using the model yet. From the experimental results, it was identified the space charge spread uniformly in the bulk under relatively low electric stress. To explain the behavior using the proposed model, it is necessary to concern the complicated parameters of charge injection and conductivity distribution. Therefore, as a first step, we tried to fit the numerical simulation results to the actual experimental results.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86351079","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}
Pub Date : 2008-10-01DOI: 10.1109/CEIDP.2008.4772851
D. Fabiani, G. Montanari, A. Dardano, G. Guastavino, L. Testa, M. Sangermano
The results of a comparative analysis performed on specimens of nanostructured epoxy resins obtained by different filler concentrations are reported in this paper. The specimens were prepared by dispersion of bohemite nanoparticles into a cycloaliphatic epoxy resin cross linked under UV. Dielectric properties, in particular space charge accumulation, are measured as a function of nanofiller content. Results indicate that space charge build up and charge mobility are affected largely by filler content. Concentrations of nanofiller of 5-7 wt% show a significant decrease of the space charge with respect to the base epoxy-resin and an increased mobility of negative carriers.
{"title":"Space Charge Dynamics in Nanostructured Epoxy Resin","authors":"D. Fabiani, G. Montanari, A. Dardano, G. Guastavino, L. Testa, M. Sangermano","doi":"10.1109/CEIDP.2008.4772851","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772851","url":null,"abstract":"The results of a comparative analysis performed on specimens of nanostructured epoxy resins obtained by different filler concentrations are reported in this paper. The specimens were prepared by dispersion of bohemite nanoparticles into a cycloaliphatic epoxy resin cross linked under UV. Dielectric properties, in particular space charge accumulation, are measured as a function of nanofiller content. Results indicate that space charge build up and charge mobility are affected largely by filler content. Concentrations of nanofiller of 5-7 wt% show a significant decrease of the space charge with respect to the base epoxy-resin and an increased mobility of negative carriers.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86642116","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}
Pub Date : 2008-10-01DOI: 10.1109/CEIDP.2008.4772808
A. Travelpiece, J. K. Nelson, L. Schadler, D. Schweickart
The addition of nanoscale metal oxide fillers to polymers has been shown, in many cases, to lead to an improvement in the dielectric breakdown strength and voltage endurance. In this paper, dielectric properties for silica- and alumina-filled polyamideimide (PAI) thin films are reported as a function of particle loading. The dispersion and thermal behavior are quantified. Experiments were also conducted using particulates which were functionalized with Aminopropyltriethoxysilane in order to augment the chemical bonding to the host matrix. The glass transition temperature and decomposition temperature are reported as a function of nanoparticle type and loading. The dielectric strength is provided for both AC and DC voltages. It was found that the enhancement in breakdown strength for a nanocomposite formulation is greater under DC conditions than AC. In addition, alumina filled PAI was found to exhibit greater electrical breakdown strength than silica filled PAI. A discussion of possible reasons is included.
{"title":"Dielectric Integrity of High-Temperature Nanocomposites","authors":"A. Travelpiece, J. K. Nelson, L. Schadler, D. Schweickart","doi":"10.1109/CEIDP.2008.4772808","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772808","url":null,"abstract":"The addition of nanoscale metal oxide fillers to polymers has been shown, in many cases, to lead to an improvement in the dielectric breakdown strength and voltage endurance. In this paper, dielectric properties for silica- and alumina-filled polyamideimide (PAI) thin films are reported as a function of particle loading. The dispersion and thermal behavior are quantified. Experiments were also conducted using particulates which were functionalized with Aminopropyltriethoxysilane in order to augment the chemical bonding to the host matrix. The glass transition temperature and decomposition temperature are reported as a function of nanoparticle type and loading. The dielectric strength is provided for both AC and DC voltages. It was found that the enhancement in breakdown strength for a nanocomposite formulation is greater under DC conditions than AC. In addition, alumina filled PAI was found to exhibit greater electrical breakdown strength than silica filled PAI. A discussion of possible reasons is included.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79574818","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}
Pub Date : 2008-10-01DOI: 10.1109/CEIDP.2008.4772857
M. Rao, G. Kumar, J. Amarnath, S. Kamakshaiah
Metallic particle contamination in a compressed gas insulated busduct (GIB) or system (GIS) may lower the corona onset and breakdown voltage of the system considerably. These particles move randomly in a horizontally mounted GIB system due to the electric field, and this movement plays a crucial role in determining the insulation behavior of gas insulated substations. Under 50-Hz AC voltage, the particle motion is complex, and under appropriate conditions, the particle may cross the gaseous gap from the low-field region near the outer enclosure to the high-field region near the central conductor. For the commonly encountered size of metallic particles in practical gas insulated systems, such a crossing of the gaseous gap takes several cycles of the 50-Hz voltage. In order to determine the particle trajectories in a three-phase common enclosure gas insulated busduct (GIB) an outer enclosure of diameter 500 mm and inner conductors of diameters 64 mm spaced equilaterally are considered. Wire like particles of aluminum, copper as well as silver of a fixed geometry has been considered to be present on enclosure surface of a three-phase busduct. Simulation is carried out for movement of metallic particles in a three-phase busduct with reduced phase conductor diameter with a view to obtain optimum size of conductor for reliable operation. The work is carried out by reducing the original diameter of the conductor from 64 mm to 54 mm in steps of 5 mm.
{"title":"Effect of Various Design Parameters on the Movement of Metallic Particles in a Three Phase Common Enclosure Gas Insulated Busduct","authors":"M. Rao, G. Kumar, J. Amarnath, S. Kamakshaiah","doi":"10.1109/CEIDP.2008.4772857","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772857","url":null,"abstract":"Metallic particle contamination in a compressed gas insulated busduct (GIB) or system (GIS) may lower the corona onset and breakdown voltage of the system considerably. These particles move randomly in a horizontally mounted GIB system due to the electric field, and this movement plays a crucial role in determining the insulation behavior of gas insulated substations. Under 50-Hz AC voltage, the particle motion is complex, and under appropriate conditions, the particle may cross the gaseous gap from the low-field region near the outer enclosure to the high-field region near the central conductor. For the commonly encountered size of metallic particles in practical gas insulated systems, such a crossing of the gaseous gap takes several cycles of the 50-Hz voltage. In order to determine the particle trajectories in a three-phase common enclosure gas insulated busduct (GIB) an outer enclosure of diameter 500 mm and inner conductors of diameters 64 mm spaced equilaterally are considered. Wire like particles of aluminum, copper as well as silver of a fixed geometry has been considered to be present on enclosure surface of a three-phase busduct. Simulation is carried out for movement of metallic particles in a three-phase busduct with reduced phase conductor diameter with a view to obtain optimum size of conductor for reliable operation. The work is carried out by reducing the original diameter of the conductor from 64 mm to 54 mm in steps of 5 mm.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89952169","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}
Pub Date : 2008-10-01DOI: 10.1109/CEIDP.2008.4772816
M. Hasheminezhad, E. Ildstad, A. Nysveen
Pressure equalized cable terminals and high voltage connectors are bottlenecks in a subsea distribution system for electric power. Connectors known as wet mateable connectors must be able to operate in sea water at high hydrostatic pressure. The use of high viscosity liquid like grease, gel or oil being suggested in these terminations introduces a parallel liquid-solid interface. Assessment of the electrical strength of such interfaces is therefore important for proper design of Subsea accessories. This paper describes breakdown mechanisms due to absorption of water. Emphasis will be put on the experimental examination of the AC 50 Hz breakdown strength of interfaces between the XLPE insulation and transformer oil with variable water content. An experimental test setup has been designed to examine factors that influence the interface's electrical strength according to IEC156 and ASTM D1816 standards. The effect of water saturation ratio on a liquid-solid dielectric interface in the temperature range of 20-90degC is presented.
{"title":"Electrical breakdown strength of interfaces between solid insulation and transformer oil with variable water content","authors":"M. Hasheminezhad, E. Ildstad, A. Nysveen","doi":"10.1109/CEIDP.2008.4772816","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772816","url":null,"abstract":"Pressure equalized cable terminals and high voltage connectors are bottlenecks in a subsea distribution system for electric power. Connectors known as wet mateable connectors must be able to operate in sea water at high hydrostatic pressure. The use of high viscosity liquid like grease, gel or oil being suggested in these terminations introduces a parallel liquid-solid interface. Assessment of the electrical strength of such interfaces is therefore important for proper design of Subsea accessories. This paper describes breakdown mechanisms due to absorption of water. Emphasis will be put on the experimental examination of the AC 50 Hz breakdown strength of interfaces between the XLPE insulation and transformer oil with variable water content. An experimental test setup has been designed to examine factors that influence the interface's electrical strength according to IEC156 and ASTM D1816 standards. The effect of water saturation ratio on a liquid-solid dielectric interface in the temperature range of 20-90degC is presented.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90820617","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}
Pub Date : 2008-10-01DOI: 10.1109/CEIDP.2008.4772908
K. Gao, Ling-Hui Yang, Jian-Hua Jiang, Zhao-Lin Liu
The synthetic method for detecting and locating PD defects in GIS is developed from two basic means: ultra high frequency (UHF) electromagnetic signal detection and acoustic emission (AE) detection. The basic principles of method, discharge spectrum, zero band tracks and time-domain waveform features are explained. The actual PD detection and location system for GIS equipments is established. It has wide frequency range, high real-time sampling rate and large flash memory. It is suitable for transient burst pulses measurement. The gradual locating method is introduced. It comprises two stages: rough locating and precise locating. Rough locating is derived from traveling-wave principle. Precise locating uses contour map of AE rms value. The gradual locating greatly improves efficiency and accuracy. The applications in substations and power plants show satisfactory effects of this new method.
{"title":"Research on the Synthetic Method for the Detection and Location of PD in GIS","authors":"K. Gao, Ling-Hui Yang, Jian-Hua Jiang, Zhao-Lin Liu","doi":"10.1109/CEIDP.2008.4772908","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772908","url":null,"abstract":"The synthetic method for detecting and locating PD defects in GIS is developed from two basic means: ultra high frequency (UHF) electromagnetic signal detection and acoustic emission (AE) detection. The basic principles of method, discharge spectrum, zero band tracks and time-domain waveform features are explained. The actual PD detection and location system for GIS equipments is established. It has wide frequency range, high real-time sampling rate and large flash memory. It is suitable for transient burst pulses measurement. The gradual locating method is introduced. It comprises two stages: rough locating and precise locating. Rough locating is derived from traveling-wave principle. Precise locating uses contour map of AE rms value. The gradual locating greatly improves efficiency and accuracy. The applications in substations and power plants show satisfactory effects of this new method.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90901537","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}
Pub Date : 2008-10-01DOI: 10.1109/CEIDP.2008.4772842
V. Boucher, P. Rain, G. Teissèdre, P. Schlupp
The stator windings of large air-cooled rotating machines are insulated with mica-glass fabric impregnated with epoxy. These composites are submitted to thermal, mechanical and electrical stresses. A specific aging arrangement has been setup allowing artificial thermo-oxidative aging of dielectric samples thanks to the application of a dry O2 pressure at a controlled temperature. Two different materials are considered: a class H material, designed to sustain temperatures up to 180degC, and a high conductivity (HC) tape material, which is a class F insulation. The samples were followed in mass and DMA (dynamic mechanical analysis). Similar profiles of mass evolution with various temperature and oxygen pressure contribute to validate the artificial aging procedure. DMA allowed determining the glass transition temperature (Tg) of the epoxy resin and observing the evolution of the network density of the polymeric matrix along aging. Delaminations of a few tens mum thick were observed within the samples after aging. These characterizations allowed the comparison between both materials.
{"title":"Evolution of structural properties of glass-mica-epoxy insulations along accelerated thermo-oxidative aging","authors":"V. Boucher, P. Rain, G. Teissèdre, P. Schlupp","doi":"10.1109/CEIDP.2008.4772842","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772842","url":null,"abstract":"The stator windings of large air-cooled rotating machines are insulated with mica-glass fabric impregnated with epoxy. These composites are submitted to thermal, mechanical and electrical stresses. A specific aging arrangement has been setup allowing artificial thermo-oxidative aging of dielectric samples thanks to the application of a dry O2 pressure at a controlled temperature. Two different materials are considered: a class H material, designed to sustain temperatures up to 180degC, and a high conductivity (HC) tape material, which is a class F insulation. The samples were followed in mass and DMA (dynamic mechanical analysis). Similar profiles of mass evolution with various temperature and oxygen pressure contribute to validate the artificial aging procedure. DMA allowed determining the glass transition temperature (Tg) of the epoxy resin and observing the evolution of the network density of the polymeric matrix along aging. Delaminations of a few tens mum thick were observed within the samples after aging. These characterizations allowed the comparison between both materials.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75887828","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}
Pub Date : 2008-10-01DOI: 10.1109/CEIDP.2008.4772856
Chuntian Chen, Duo Li, Lijian He, Xianyou Zhang
In the paper, low temperature waste heat power generation model on the basis of Rankine-cycle is designed and constructed, and the experiments on electrostatic field enhancement condensation heat transfer and power generation are conducted. R11 is selected as the working medium. Results of the relations among the saturated vapor pressure, condensation heat transfer coefficient and other relative parameters in the different temperature, and the applied voltage have been obtained. Analysis has been conducted on the power consumption of the supplied electric field. The results are valuable for extending the theoretical investigation of electrostatic field enhancement of condensation heat transfer.
{"title":"Research on Heat Transfer Enhancement of Dielectric Fluid in Electrostatic Field","authors":"Chuntian Chen, Duo Li, Lijian He, Xianyou Zhang","doi":"10.1109/CEIDP.2008.4772856","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772856","url":null,"abstract":"In the paper, low temperature waste heat power generation model on the basis of Rankine-cycle is designed and constructed, and the experiments on electrostatic field enhancement condensation heat transfer and power generation are conducted. R11 is selected as the working medium. Results of the relations among the saturated vapor pressure, condensation heat transfer coefficient and other relative parameters in the different temperature, and the applied voltage have been obtained. Analysis has been conducted on the power consumption of the supplied electric field. The results are valuable for extending the theoretical investigation of electrostatic field enhancement of condensation heat transfer.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82369930","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}
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