Reduction of the Heat Leak in Superconducting System at Half-wave-rectified Current Mode by Peltier Current Lead

Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan] Pub Date : 2002-09-25 DOI:10.2221/JCSJ.37.472

Takayuki Yamaguchi, Naohiro Ohtaki, Y. Hasegawa, Keiji Nakamura, S. Yamaguchi

{"title":"Reduction of the Heat Leak in Superconducting System at Half-wave-rectified Current Mode by Peltier Current Lead","authors":"Takayuki Yamaguchi, Naohiro Ohtaki, Y. Hasegawa, Keiji Nakamura, S. Yamaguchi","doi":"10.2221/JCSJ.37.472","DOIUrl":null,"url":null,"abstract":"Experiments of Peltier current lead (PCL) were performed by the way of half-wave-rectified current (HWRC) for an evaluation of the PCL system in the drive with the large-rippled current. The current ripple of the HWRC is large, and we discussed the cooling capability of the current ripple. The experimental results revealed that the temperature difference of the thermoelectric-element (TE) increased with the magnitude of the current in the PCL system, despite the large current ripple. Calorimetric measurements revealed that the PCL reduced the heat leak of 60% for the peak current 90A. We compared the PCL systems of the direct current (dc) mode and the HWRC mode. The results showed that the current dependence of the temperature difference in the HWRC mode did not match that of the dc mode, but those of the heat leak matched well. The performance of the Peltier cooling in the HWRC mode is reduced to be 2/πtime of the Seebeck coefficient for the dc mode by using the time-average method.","PeriodicalId":93144,"journal":{"name":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","volume":"37 1","pages":"472-478"},"PeriodicalIF":0.0000,"publicationDate":"2002-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2221/JCSJ.37.472","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 5

Abstract

Experiments of Peltier current lead (PCL) were performed by the way of half-wave-rectified current (HWRC) for an evaluation of the PCL system in the drive with the large-rippled current. The current ripple of the HWRC is large, and we discussed the cooling capability of the current ripple. The experimental results revealed that the temperature difference of the thermoelectric-element (TE) increased with the magnitude of the current in the PCL system, despite the large current ripple. Calorimetric measurements revealed that the PCL reduced the heat leak of 60% for the peak current 90A. We compared the PCL systems of the direct current (dc) mode and the HWRC mode. The results showed that the current dependence of the temperature difference in the HWRC mode did not match that of the dc mode, but those of the heat leak matched well. The performance of the Peltier cooling in the HWRC mode is reduced to be 2/πtime of the Seebeck coefficient for the dc mode by using the time-average method.

查看原文本刊更多论文

用珀尔帖引线减少超导系统半波整流电流模式下的热泄漏

采用半波整流电流(HWRC)方式进行了珀尔帖电流引线(PCL)实验，对大纹波电流驱动下的PCL系统进行了评价。高冷机组的电流纹波较大，讨论了电流纹波的冷却能力。实验结果表明，尽管电流纹波较大，但热电元件(TE)的温差随电流的大小而增大。量热测量显示，PCL在峰值电流90A时减少了60%的热泄漏。我们比较了直流模式和HWRC模式的PCL系统。结果表明:在HWRC模式下，温差对电流的依赖关系与直流模式下的不匹配，但热泄漏对电流的依赖关系较好;采用时间平均法将HWRC模式下的Peltier冷却性能降为直流模式下塞贝克系数的2/π时间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]

自引率

0.00%

发文量