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Politics : Formerly About Advanced Micro Devices

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To: combjelly who wrote (349617)	9/19/2007 5:54:22 PM
From: steve harris	Read Replies (1) of 1573909

So does liquid hydrogen need to be at 5k psi in your car as a fuel? auto.howstuffworks.com "To prevent possible leaks in the jacket around the fuel tank, which helps maintain the liquid hydrogen at a sufficiently low temperature (hydrogen takes its liquid form at -423F/-253C), the H2R features a double-redundant safety system: If the pressure within the tank ever exceeds 5 bar, two additional safety valves open up immediately." But other places says it appears it needs to be at 5k psi to maintain its liquid form. Or is this a "double-tank" where if the 5k psi "core" starts leaking, then at 5 bar, the outside shell will safely vent the hydrogen?

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