ok, so I'm reading up on the BMW 7 series hydrogen car in their latest issue (Oct 2006) online which can be found here. The thing that got me thinking is this particular sentence. "While liquid hydrogen is the densest form of the fuel, keeping it at the required 480 degrees below zero in the on-board storage tank is expensive and difficult." Now, I thought Absolute Zero was -273.15°C or -459.67°F. :huh: Am I not reading this correctly or is it an error on their part?
<div class='quotetop'>QUOTE(Tideland Prius @ Sep 19 2006, 05:51 PM) [snapback]321894[/snapback]</div> You are correct about absolute zero. I did some searching and the boiling point of hydrogen is -252.87ºC (-423.17ºF). So it is an error. Although, if it's not an error, then it would be expensive and difficult to keep the hydrogen at -480ºF.
