DocumentCode :
1071885
Title :
Performance tests of high temperature superconducting power cable cooling system
Author :
Koh, Deukyong ; Yeom, Hankil ; Hong, Yongju ; Lee, Kwansoo
Author_Institution :
HVAC & Cryogenic Eng. Group, Korea Inst. of Machinery & Mater., Daejeon, South Korea
Volume :
14
Issue :
2
fYear :
2004
fDate :
6/1/2004 12:00:00 AM
Firstpage :
1746
Lastpage :
1749
Abstract :
A high temperature superconducting power cable requires forced flow cooling. Liquid nitrogen is circulated by a pump and cooled down by a subcooling system. Typical operating temperature range is expected to be between 65 K and 80 K. The circulating liquid nitrogen is subcooled by liquid nitrogen boiling on the shell side of a subcooler heat exchanger, and then it cools the HTS cable. The HTS power cable needs sufficient cooling to overcome its low temperature heat loading. This loading typically comes in two forms. One is heat leak from the surroundings and the other is internal heat generation, i.e., AC loss. This paper describes performance tests of the cooling system. Heat exchanging performance of the subcooler, pressure drop between supply and return lines, and heat transfer coefficient of a former are examined for the performance test.
Keywords :
cooling; cryostats; heat exchangers; high-temperature superconductors; nitrogen; power cable testing; superconducting cables; 65 to 80 K; AC loss; HTS power cable; cooling system; forced flow cooling; heat leak; heat transfer coefficient; high temperature superconducting power cable; internal heat generation; low temperature heat loading; operating temperature; performance tests; pressure drop; saturated liquid nitrogen; shell side; subcooler heat exchanger; subcooling system; Cooling; Fluid flow; Heat transfer; High temperature superconductors; Nitrogen; Power cables; Superconducting cables; System testing; Temperature distribution; Thermal loading; Cooling system; HTS power cable; cryostat; saturated liquid nitrogen; subcooler;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2004.831066
Filename :
1325144
Link To Document :
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