IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203)最新文献_第10页

Evaluation of lithium ion cells for space applications 空间应用锂离子电池的评价

IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Pub Date : 1997-07-27 DOI: 10.1109/IECEC.1997.659159

C. Lurie

{"title":"Evaluation of lithium ion cells for space applications","authors":"C. Lurie","doi":"10.1109/IECEC.1997.659159","DOIUrl":"https://doi.org/10.1109/IECEC.1997.659159","url":null,"abstract":"Lithium ion batteries can provide a significant weight advantage over existing spacecraft energy storage systems. First generation, space capable, lithium ion batteries are expected to be one half the weight of the typical nickel-hydrogen batteries presently used for most present day spacecraft applications. Mature lithium ion batteries may be one third the weight of present day batteries. Accordingly it is important to understand how lithium ion cells will perform in operating scenarios typical of space applications. This paper describes a program designed to evaluate appropriate, available lithium ion cells in test regimes providing parametric characterization and life cycle data. The objective of this effort is to generate a data and experience base describing the ability of these cells to perform in typical space missions. The initial program task was the development of a dedicated test facility designed to accommodate the lithium ion cell's operating and safety-related characteristics. The facility provides individual cell control for all functions. Charge/discharge profiles, data acquisition, and safety features are managed by a dedicated computer. Initial cell testing was performed with Sanyo UR 18650 cells. Test regimes include 100% DOD and characterization cycling, as well as evaluation of performance in simulated GEO and LEO mission scenarios.","PeriodicalId":183668,"journal":{"name":"IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132130706","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: 12

Proposal and fundamental analysis of thermally regenerative fuel cell utilizing solar heat 利用太阳能热再生燃料电池的构想与基本分析

IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Pub Date : 1997-07-27 DOI: 10.1109/IECEC.1997.656707

Y. Ando, T. Doi, T. Takashima, T. Tanaka

{"title":"Proposal and fundamental analysis of thermally regenerative fuel cell utilizing solar heat","authors":"Y. Ando, T. Doi, T. Takashima, T. Tanaka","doi":"10.1109/IECEC.1997.656707","DOIUrl":"https://doi.org/10.1109/IECEC.1997.656707","url":null,"abstract":"In Japan, it is difficult to obtain high-temperature heat continuously from the Sun. However, it is easy to obtain low-temperature solar thermal energy. In order to use such low-temperature solar energy, the authors propose the use of a thermally regenerative fuel cell operated by solar energy. It is a direct energy conversion process which consists of 2-propanol dehydrogenation at the negative electrode, acetone hydrogenation at the positive electrode and an electrolyte sandwiched by both electrodes. By means of a combination of chemical reactions and fuel cells, it can convert low temperature thermal energy (like solar thermal energy) into electrical energy directly. In order to make clear the characteristics of their proposed cell, the authors use molecular hydrogen as the proton source instead of 2-propanol. The activity of a ruthenium and platinum composite catalyst-supported carbon plate for acetone hydrogenation at 363 K is higher than that of a ruthenium or platinum mono-metallic catalyst-supported carbon plate. The activity of ruthenium and platinum composite catalyst-supported carbon felt or carbon cloth is much higher than carbon-plate-supported catalysts. The authors adopted a ruthenium and platinum composite catalyst supported carbon felt or cloth as electrodes of the cell and examined its characteristics.","PeriodicalId":183668,"journal":{"name":"IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132545157","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: 3

International Space Station power module thermal control system hydraulic performance 国际空间站动力模块热控系统液压性能

IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Pub Date : 1997-07-27 DOI: 10.1109/IECEC.1997.659243

V. Goldberg

{"title":"International Space Station power module thermal control system hydraulic performance","authors":"V. Goldberg","doi":"10.1109/IECEC.1997.659243","DOIUrl":"https://doi.org/10.1109/IECEC.1997.659243","url":null,"abstract":"The International Space Station (ISS) uses four photovoltaic power modules (PVMs) to provide electric power for the US On-Orbit Segment. The PVMs consist of photovoltaic arrays (PVAs), orbit replaceable units (ORUs), photovoltaic radiators (PVRs), and a thermal control system (TCS). The PVM TCS function is to maintain selected PVM components within their specified operating ranges. The TCS consists of the pump flow control subassembly (PFCS), piping system, including serpentine tubing for individual component heat exchangers, headers/manifolds, fluid disconnect couplings (FQDCs), and radiator (PVR). This paper describes the major design requirements for the TCS and the results of the system hydraulic performance predictions in regard to these requirements and system component sizing. The system performance assessments were conducted using the PVM TCS fluid network hydraulic model developed for predicting system/component pressure losses and flow distribution. The Hardy-Cross method of iteration was used to model the fluid network configuration. Assessments of the system hydraulic performance were conducted based on an evaluation of uncertainties associated with the manufacturing and design tolerances. Based on results of the analysis, it was concluded that all design requirements regarding system hydraulic performance could be met. The hydraulic performance range, enveloping possible system operating parameter variations was determined.","PeriodicalId":183668,"journal":{"name":"IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131534025","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

Hawaiian electric utilities' progress in renewable energy development 夏威夷电力公司在可再生能源开发方面的进展

IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Pub Date : 1997-07-27 DOI: 10.1109/IECEC.1997.656719

A. Seki

引用次数: 1

Analysis of DC/DC converters with resonant filters 带谐振滤波器的DC/DC变换器分析

IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Pub Date : 1997-07-27 DOI: 10.1109/IECEC.1997.658212

Rene J Thibodeaux

{"title":"Analysis of DC/DC converters with resonant filters","authors":"Rene J Thibodeaux","doi":"10.1109/IECEC.1997.658212","DOIUrl":"https://doi.org/10.1109/IECEC.1997.658212","url":null,"abstract":"Conventional DC/DC power converter topologies contain a single semiconductor switch, a diode and various arrangements of inductors and capacitors to filter the resulting waveforms into low ripple DC. The output or input voltage is limited to the rating of the semiconductor switch and diode. For high voltage performance, transformers are added to form forward, flyback or push-pull topologies. For high input voltages, semiconductor switches are arranged in an inverter bridge topology with a transformer to operate at higher voltages. Generally, conventional DC/DC power converters are limited to low voltage applications. The addition of a transformer to provide sufficient voltage gain adds significant weight to the converter. Series, parallel resonant circuits with dual bridge circuits can function like a DC/DC power converter with a transformer. Resonant converter topologies concepts have existed for the past 30 years. This paper presents a simplified generalized view of resonant circuits as /spl pi/-filters and T-filters which give insight into improving circuit performance and developing new resonant topologies for bidirectional power flow.","PeriodicalId":183668,"journal":{"name":"IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133122080","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: 2

Full scale lightning generation techniques for aircraft susceptibility evaluations 飞机易感性评估的全尺寸闪电产生技术

IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Pub Date : 1997-07-27 DOI: 10.1109/IECEC.1997.659214

L. Walko, D. Schweickart, J. M. Gruden, G.S.-Y.T. Li, B. Jarupan, S. Sebo

{"title":"Full scale lightning generation techniques for aircraft susceptibility evaluations","authors":"L. Walko, D. Schweickart, J. M. Gruden, G.S.-Y.T. Li, B. Jarupan, S. Sebo","doi":"10.1109/IECEC.1997.659214","DOIUrl":"https://doi.org/10.1109/IECEC.1997.659214","url":null,"abstract":"There are numerous laboratory tests that simulate aircraft/lightning interactions to assess aircraft survivability and vulnerability. One such test uses a high voltage capacitor bank to generate a high current pulse that is applied to an actual aircraft or a geometrically similar structure. The current pulse is similar in peak magnitude and shape to lightning return strokes present in a lightning flash. The test technique described here uses an aluminum cylinder to simulate an aircraft. The cylinder is representative in size and construction of a fighter-type aircraft fuselage. The objective is to assess the susceptibility of aircraft electrical circuits to the electromagnetic effects of the lightning current. When the current pulse is applied, measurements are made on electrical circuits inside the cylinder to determine the magnitude of voltages and currents induced as a result of electromagnetic fields created by the lightning current flowing on the cylinder surface. The high voltage capacitor bank used to generate the pulse is described along with details of the test circuit. The characteristics of the generated current waveshape and the limitations of pulse generators to simulate the complete lightning flash threat are presented. In addition, the total electrical circuit, which includes the capacitor bank, cylinder and return leads has been modeled. Through computer analysis, the waveshapes of the total surface current are calculated and compared to empirical values for the cylinder test configuration.","PeriodicalId":183668,"journal":{"name":"IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131857974","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: 4

The NASA fuel cell upgrade program for the Space Shuttle orbiter 美国宇航局航天飞机轨道器燃料电池升级计划

IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Pub Date : 1997-07-27 DOI: 10.1109/IECEC.1997.659189

M. Warshay, P. Prokopius, M. Le, G. Voecks

{"title":"The NASA fuel cell upgrade program for the Space Shuttle orbiter","authors":"M. Warshay, P. Prokopius, M. Le, G. Voecks","doi":"10.1109/IECEC.1997.659189","DOIUrl":"https://doi.org/10.1109/IECEC.1997.659189","url":null,"abstract":"As part of NASA's overall efforts to improve the Space Shuttle operations, a program to upgrade the existing fuel cell powerplant has begun. The upgrade will involve replacing the alkaline fuel cell (AFC) system with a proton exchange membrane (PEM) fuel cell system, resulting in a much lower life cycle cost of the powerplant. The Shuttle Fuel Cell Upgrade plan of the JSC/LeRC/JPL team includes the following key elements: (1) systems analyses to assure compatibility/maximum utilization by shuttle of the best PEM fuel cell characteristics; (2) short stack testing of the leading PEM fuel cell contractors' hardware; (3) detailed task objective (DTO) flight experiment to verify PEM system water management and thermal management under zero-g operation; (4) A downselect to the best PEM system; and (5) development of the flight hardware powerplant system, including, of course, both the power and accessory subsystems. The planned success-oriented, four year effort is a coherent program to develop a 20 kW PEM fuel cell powerplant. The current major program tasks under way are short stack testing and systems analyses.","PeriodicalId":183668,"journal":{"name":"IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124179704","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: 19

Thermal analysis of paddy husk. I. Sensitivity of kinetic parameters to selection of stage transition points 稻壳热分析。1、动力学参数对阶段过渡点选择的敏感性

IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Pub Date : 1997-07-27 DOI: 10.1109/IECEC.1997.658229

A. K. Jain, S. Sharma, D. Singh

引用次数: 0

Preparation and characterization of a hybrid solid polymer electrolyte consisting of poly(ethyleneoxide) and poly(acrylonitrile) for polymer-battery application 用于聚合物电池的由聚环氧乙烷和聚丙烯腈组成的混合固体聚合物电解质的制备和表征

IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Pub Date : 1997-07-27 DOI: 10.1109/IECEC.1997.659150

M. Nookala, L. Scanlon, R. Marsh

{"title":"Preparation and characterization of a hybrid solid polymer electrolyte consisting of poly(ethyleneoxide) and poly(acrylonitrile) for polymer-battery application","authors":"M. Nookala, L. Scanlon, R. Marsh","doi":"10.1109/IECEC.1997.659150","DOIUrl":"https://doi.org/10.1109/IECEC.1997.659150","url":null,"abstract":"For application in an ambient temperature solid state lithium battery a highly dimensionally-stable polymer electrolyte based on polyethyleneoxide (PEO) suffers from low ionic conductivity, whereas a highly conducting gel electrolyte based on polyacrylonitrile (PAN) suffers from low dimensional stability. In order to overcome these problems, a hybrid solid polymer electrolyte (HSPE) was prepared using PEO, PAN, propylene carbonate (PC), ethylene carbonate (EC) and lithium perchlorate. The HSPE films were highly conducting as well as dry, free-standing and dimensionally-stable. The films were characterized by constructing symmetrical cells containing nonblocking lithium electrodes and also blocking stainless steel electrodes. Investigations were carried out on ionic conductivity, electrochemical reaction, interfacial stability and morphology of the films. The properties of HSPE were compared with the films prepared using (i) PEO and LiClO/sub 4/ and (ii) PAN, PC, EC and LiClO/sub 4/. The results suggest that the HSPE is a potential electrolyte material for application in a polymer-battery.","PeriodicalId":183668,"journal":{"name":"IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114577470","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: 2

Design and performance of radioisotope space power systems based on OSC multitube AMTEC converter designs 基于OSC多管AMTEC转换器设计的放射性同位素空间电力系统设计与性能

IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Pub Date : 1997-07-27 DOI: 10.1109/IECEC.1997.659239

A. Schock, H. Noravian, C. Or

引用次数: 11