| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydrogen gas cooling device capable of reducing the size of an installation, reducing the consumption of liquid nitrogen as cooling medium, and reducing a starting time and a finishing time for the device. SOLUTION: The hydrogen gas cooling device comprises a heat exchanger 1 for making heat exchange between hydrogen gas and liquefied gas to cool the hydrogen gas, and a head tank 5 for storing the liquefied gas to be supplied to the heat exchanger. The heat exchanger has such a double tube structure that hydrogen flows to the side of an inner tube 3, the liquefied gas is filled in the side of an outer tube 2, the tube axes of double tubes are arranged in the vertical or oblique direction, a liquefied gas supply tube 6 for supplying the liquefied gas from the head tank 5 is connected to the bottom of the outer tube 2, and a return tube 7 is provided at a position upward from the bottom of the outer tube for returning the liquefied gas to the head tank 6. The head tank 5 has the bottom located upward beyond the top of the heat exchanger 1. COPYRIGHT: (C)2009,JPO&INPIT
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