Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96最新文献_第3页

Temperature and time dependent finite-element model of a thermoelectric couple 热电偶的温度和时间相关有限元模型

Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96 Pub Date : 1996-03-26 DOI: 10.1109/ICT.1996.553305

P. G. Lau, R. Buist

引用次数: 29

Thermoelectric coolers with small response time 响应时间短的热电冷却器

Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96 Pub Date : 1996-03-26 DOI: 10.1109/ICT.1996.553496

V. A. Semeniouk, T. Pilipenko

引用次数: 7

Electronic transport properties of the Skutterudite CoSb3 and mixed alloys Skutterudite coss3及其混合合金的电子输运性质

Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96 Pub Date : 1996-03-26 DOI: 10.1109/ICT.1996.553264

K. Matsubara, T. Sakakibara, Y. Notohara, H. Anno, H. Shimizu, T. Koyanagi

引用次数: 24

The thermoelectric power on p-n junction p-n结的热电功率

Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96 Pub Date : 1996-03-26 DOI: 10.1109/ICT.1996.553503

Z. Dashevsky, S. Ashmontas, L. Vingelis, I. Gradauskas, A. Kasian

{"title":"The thermoelectric power on p-n junction","authors":"Z. Dashevsky, S. Ashmontas, L. Vingelis, I. Gradauskas, A. Kasian","doi":"10.1109/ICT.1996.553503","DOIUrl":"https://doi.org/10.1109/ICT.1996.553503","url":null,"abstract":"Measurements of thermo-EMF were performed on sharp PbTe p-n junctions with doping layer depth by order of diffusion length of minority carriers in the temperature range from 300 to 80 K. The barrier thermo-EMF Vb effect results in sharp output signal increase at low temperature. Moreover, the sign of Vb is opposite to the sign of volume thermo-EMF. The barrier thermo-EMF may be explained by thermodiffusion nonequilibrium carriers and its separation on the p-n junction. However the difference Vb from photo-EMF is an opposite sign at n- and p-ranges. In this case the observation of Vb was enabled by producing /spl Delta/T only at n-range (the absorption of short laser pulse and free carriers at surface layer). At short pulse (CO/sub 2/-laser /spl lambda/=10.6 /spl mu/m, /spl tau/=200 nsec) increase of output signal practically repeated the form of the laser pulse, i.e., irradiation absorption of free carriers and its interaction with lattice (heat of phonon system) is acting without inertion. At the same time we observed very slow decrease in signal V (/spl mu/sec and more) after switch off connecting with inertion of phonon system cooling. This memory effect of V differs from the response of photo-EMF and may be very useful for concrete applications (for example measurement of power for short laser pulse).","PeriodicalId":447328,"journal":{"name":"Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121551203","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

Thermal management of power electronics using thermoelectric coolers 使用热电冷却器的电力电子设备的热管理

Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96 Pub Date : 1996-03-26 DOI: 10.1109/ICT.1996.553311

J. Vandersande, J. Fleurial

{"title":"Thermal management of power electronics using thermoelectric coolers","authors":"J. Vandersande, J. Fleurial","doi":"10.1109/ICT.1996.553311","DOIUrl":"https://doi.org/10.1109/ICT.1996.553311","url":null,"abstract":"Many high power electronic devices, such as power amplifies and multiprocessors, operate at high temperatures close to or at the edge of their reliability, which could severely impact performance and operating lifetime. These devices thus need cooling to improve performance and reliability. Conventional thermal management techniques, most of which are discussed, are not well suited to the specific problem of cooling discrete or localized heat dissipating devices since they generally cool the whole board. Moreover, these techniques have difficulty dealing with the large heat fluxes associated with the high density packaging of power devices. The specific problem of spot cooling of power devices can be very effectively solved by using the combination of diamond substrates and a thermoelectric cooler. The highest power components would be mounted directly on a diamond substrate (ideally the top substrate of the cooler) allowing the cooler/diamond combination to maintain the temperature of the device from a few degrees to tens of degrees below that of the substrate on which the cooler is mounted (diamond or any other high thermal conductivity material). This will allow the device to operate at a low enough temperature to increase both reliability and clockspeed. It has been determined that the highest cooling power densities will be achieved with thin film coolers with cooler leg lengths on the order of 20 to 50 microns. The results of a solid state power amplifier (MMIC) cooled using a diamond/cooler combination are presented and discussed.","PeriodicalId":447328,"journal":{"name":"Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121576658","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: 41

A new concept of porous thermoelectric module using a reciprocating flow for cooling/heating system 采用往复流的多孔热电模块的新概念，用于冷却/加热系统

Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96 Pub Date : 1996-03-26 DOI: 10.1109/ICT.1996.553315

S. Tada, Ryozo Echigo, H. Yoshida

{"title":"A new concept of porous thermoelectric module using a reciprocating flow for cooling/heating system","authors":"S. Tada, Ryozo Echigo, H. Yoshida","doi":"10.1109/ICT.1996.553315","DOIUrl":"https://doi.org/10.1109/ICT.1996.553315","url":null,"abstract":"This paper presents the conceptual design of a novel thermoelectric cooler and/or heater utilizing the heat transfer effect due to forced convection. A porous thermoelectric converter combined with a reciprocating flow system in which the flow direction of air passing through the element is reversed after regular intervals is proposed. This flow system in effect makes the thermal conductivity insignificant and contributes toward the achievement of a high efficient cooler and/or heater. For the first phase, a one-dimensional numerical analysis is performed to examine the detailed characteristics of the device by systematically varying the relevant thermo-fluid parameters. In particular, the flow velocity and the porosity of the thermoelectric elements are the most important parameters which directly affect the system performance. For example in a porous thermoelectric cooler, the lowest temperature of air is approximately -20/spl deg/C for an ambient temperature of 27/spl deg/C, which is attained with a flow velocity u=0.35 m/s, a material porosity /spl epsiv/=0.5, and 2.5 cm thick thermoelectric elements. As a notable feature, the temperature of the cooling section of the system varies considerably with the velocity, and it attains a minimum at u=0.35 m/s. Subsequently, on the basis of the proposed cooling system, an extended concept aimed to realize commercial coolers and/or heaters is briefly discussed.","PeriodicalId":447328,"journal":{"name":"Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116598456","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: 8

Thermoelectric figure of merit of Si-Ge multilayered thin films 硅锗多层薄膜热电性能图

Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96 Pub Date : 1996-03-26 DOI: 10.1109/ICT.1996.553528

A. Yamamoto, T. Ohta

引用次数: 0

Thermoelectricity applied to the cryoconcentration of orange juice 应用于橙汁低温浓缩的热电

Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96 Pub Date : 1996-03-26 DOI: 10.1109/ICT.1996.553314

M. A. Sanz-Bobi, R. Palacios, A. Arenas

{"title":"Thermoelectricity applied to the cryoconcentration of orange juice","authors":"M. A. Sanz-Bobi, R. Palacios, A. Arenas","doi":"10.1109/ICT.1996.553314","DOIUrl":"https://doi.org/10.1109/ICT.1996.553314","url":null,"abstract":"The high content of water in natural fruit juices suggests the reduction of their volume by its elimination. This is a concentration process for juices that saves space and reduces costs for storage, transport and handling. This paper describes the main features of a prototype of a \"cryoconcentration cell\" for obtaining concentrated orange juice. This development is being supported by a research project within the program of the CICYT, a Spanish Government Agency to promote R&D activities. The prototype proposes the use of the Peltier effect as an alternative to the traditional methods of cryoconcentration using the aforementioned conventional techniques. The cryoconcentration cell uses a set of thermoelectric elements to produce the cooling conditions able to convert the excess of water included in the juice into ice so that later it is possible to eliminate it and to concentrate the juice. The orange juice is the hot sink in our application. The heat extracted from the orange juice is transferred to water in circulation, which is the cool sink. A first prototype of this cell was constructed in aluminium. From this experience another prototype was constructed in copper which is an improvement over the first one. Both prototypes of cryoconcentration cells use 16 thermoelectric elements on both main sides of the recipient that temporarily contains the juice. A detailed description of the last prototype, its design and some initial results obtained are presented in this paper.","PeriodicalId":447328,"journal":{"name":"Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132125499","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: 5

Structure and thermoelectric properties of nano-crystalline Rex-Si1-x thin film composites 纳米晶Rex-Si1-x薄膜复合材料的结构和热电性能

Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96 Pub Date : 1996-03-26 DOI: 10.1109/ICT.1996.553532

A. Burkov, A. Heinrich, C. Gladun, W. Pitschke, J. Schumann

引用次数: 0

Thermoelectric properties of sintered magnesium compounds 烧结镁化合物的热电性能

Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96 Pub Date : 1996-03-26 DOI: 10.1109/ICT.1996.553271

T. Kajikawa, I. Katsube, S. Sugihara, K. Soejima

引用次数: 4