| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of a known backup cooling system by reducing the whole size and complexity of the known backup cooling system and by reducing investment expense and power consumption of the system. SOLUTION: Backup cooling is provided to this cryogenic cooling system comprising multiple cooling loops using a single backup coolant storage vessel. The backup coolant storage vessel is in fluid communication with at least one of the cooling loops, and the cooling loops are in fluid communication with each other. Each cooling loop, in turn, is in fluid communication with a cooling unit. In the event of lost coolant from one of the loops, coolant, e.g., liquid nitrogen, is transferred from the other loops to the loop that lost coolant, and the backup coolant storage vessel releases backup coolant into the system. COPYRIGHT: (C)2006,JPO&NCIPI
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