Cooling unit for the AmpaCity project: two years successful operation.
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http://www.iifiir.org/clientBookline/service/reference.asp?INSTANCE=exploitation&OUTPUT=PORTAL&DOCID=IFD_REFDOC_0018364&DOCBASE=IFD_REFDOC&SETLANGUAGE=FR
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资源简介：
High temperature super conductors (HTS) can efficiently be cooled with liquid nitrogen down to a temperature of 64 K (-209°C). Lower temperatures are not practical, because nitrogen becomes solid at 63 K (-210°C). To achieve this temperature level the coolant has to be vaporized below atmospheric pressure. Messer has developed a cooling unit with an adequate vacuum subcooler, a liquid nitrogen circulation system, and a storage vessel for cooling an HTS power cable. The cooling unit was delivered in 2013 for the German AmpaCity project of RWE Deutschland AG, Nexans and Karlsruhe Institute of Technology. Within this project RWE and Nexans installed the worldwide longest superconducting power cable in the city of Essen, Germany. The cable is in operation since March 10th, 2014.
提供机构：
International Institute of Refrigeration (IIR)
创建时间：
2016-07-22
