car
How to store energy -5
Hydrogen exists in gasous form in the standard condition due to its quite low boiling point, meaning that it is difficult to store and transport. This drawback, however, does not lead to a conclusion of giving up the use of hydrogen, because hydrogen also has another strong benefits in its production and usage. Hydrogen and its derivative are to be discussed in the series of posts, by considering "how small the volmetric energy density can become".
How to store energy -4
Hydrogen exists in gasous form in the standard condition due to its quite low boiling point, meaning that it is difficult to store and transport. This drawback, however, does not lead to a conclusion of giving up the use of hydrogen, because hydrogen also has another strong benefits in its production and usage. Hydrogen and its derivative are to be discussed in the series of posts, by considering "how small the volmetric energy density can become".
"drainage" of gasoline-powered vehicle?
A gasoline-powered vehicle runs by utilizing the energy generated through the combustion of gasoline. Primary products of the combustion reaction are carbon dixodies and water. How much of water does a gasoline-powered vehicle dischage?
"drainage" of fuel cell vehicle?
The fuel cell vehicle is driven by the energy released from a reaction between hydrogen and oxygen, and therefore discharges water of quantity same as the consumed hydrogen. How much of water does a fuel cell vehicle discharge?