Scientists at the Lawrence Livermore National Laboratory have revealed that they have driven a car 650 miles on one tank of liquid hydrogen. In a recent test, the team installed a super-insulated hydrogen gas tank in a standard Prius hybrid that was able to keep a full load of the liquid without evaporating for six days, setting a new world record. The 300-pound tank removes a lot of obstacles to the development of hydrogen-powered cars. Current versions, such as the fleet of hydrogen-electric Toyota Prius’s used by various city governments across Southern California, run on compressed hydrogen gas, and have a limited range of around 80 miles between fill-ups. Even a fairly modest three-gallon tank fills the entire trunk of a Prius, but still only allows a range of around 200 miles, not really enough to compete with gasoline-only vehicles. One way to overcome this limitation is by using liquid hydrogen, which takes up around a third of the volume of compressed gas. However, it is much more difficult to handle, mainly because it must be kept at very low temperatures (around -420oF) and extremely high pressure to prevent it from evaporating as the engine heats up.
Source: Breakthrough Hydrogen Car Gets 650 Miles Per Tank
Labels: autos, hydrogen
