Performance improvement of a two-stage GM cryocooler by use of Er(Ni0.075Co0.925)2 magnetic regenerator material

被引：18

作者：

Trevisani, L

Kuriyama, T

Negrini, F

Okamura, T

Ohtani, Y

Okamura, M

Fabbri, M

机构：

[1] Univ Bologna, Dept Elect Engn, I-40136 Bologna, Italy

[2] Toshiba Co Ltd, Power & Ind Syst Res & Dev Ctr, Yokohama, Kanagawa 2300045, Japan

[3] Tokyo Inst Technol, Dept Energy Sci, Yokohama, Kanagawa 2268502, Japan

[4] Toshiba Co Ltd, Mat & Components Dev Dept, Yokohama, Kanagawa 2350032, Japan

来源：

CRYOGENICS | 2002年 / 42卷 / 10期

关键词：

GM cryocooler; regenerator; magnetic regenerator material;

D O I：

10.1016/S0011-2275(02)00101-7

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A newly developed magnetic regenerator material Er(Ni0.075Co0.925)(2), having high specific heat at temperatures from 10 to 20 K, has been tested inside the second regenerator of a two-stage GM cryocooler. Different working conditions have been examined: four Er(Ni0.075Co0.925)(2)/Pb material ratios, three displacer reciprocating speeds, and two cryocooler stroke lengths. In the best working conditions, the experimental results show a cooling power improvement up to 15% over the whole temperature range from 10 to 20 K compared to that of the same GM cryocooler employing only lead. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：653 / 657

页数：5