Subcooled liquid nitrogen refrigerator for HTS power systems

被引：17

作者：

Suzuki, Y ^{[1
]}

Yoshida, S ^{[1
]}

Kamioka, Y ^{[1
]}

机构：

[1] Taiyo Toyo Sanso Co Ltd, Cryogen Dept, Chuo Ku, Tokyo 1040031, Japan

来源：

CRYOGENICS | 2003年 / 43卷 / 10-11期

关键词：

subcooled liquid nitrogen; HTS power application; temperature stratification;

D O I：

10.1016/S0011-2275(03)00169-3

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Subcooled liquid nitrogen is a good cooling medium of high temperature superconducting (HTS) electric power systems such as all electric power line and a power transformer. To produce subcooled liquid nitrogen, a cryocooler is used and a circulation pump is installed in the system. Several subcooled liquid nitrogen circulation systems were constructed and tested. Those are used as a refrigerator for HTS power systems. The pressure of subcooled liquid nitrogen is maintained at atmospheric pressure (0.108 MPa) and the working temperature is 68 K. One system of HTS power transformer was tested in distribution power line. In each case, the temperature of the cold head of the cryocooler is kept at 64 K little above nitrogen freezing temperature. For the stable operation, the system must work even in the case of shaking condition by earthquake, the pressure must be stable and be kept at atmospheric pressure. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：597 / 602

页数：6