Dave's Energy

Tuesday, December 12, 2006

Why a hydrogen economy doesn't make sense

from PhysOrg.com

In a recent study, fuel cell expert Ulf Bossel explains that a hydrogen economy is a wasteful economy. The large amount of energy required to isolate hydrogen from natural compounds (water, natural gas, biomass), package the light gas by compression or liquefaction, transfer the energy carrier to the user, plus the energy lost when it is converted to useful electricity with fuel cells, leaves around 25% for practical use — an unacceptable value to run an economy in a sustainable future. Only niche applications like submarines and spacecraft might use hydrogen.

[...]

on China

The rampant buzz on China's bright economic future has caused me--and I'm guessing at least a few others--to overlook some prime issues that Americans take for granted, such as how will the modern Chinese meet their basic needs, like food and water? I came across these two articles from Seed Magazine in succession and didn't make the connection until a little later.

Issue 1 - The Chinese can't afford to give up food crops for biofuel:
Biofuels Seen as a Luxury

Issue 2 - Water is a problem too:
Beijing's Tap Running Dry

Mainland China out-numbers the US by ~4.5X and has a younger population. Picture our domestic energy issues and quadruple them, and then take biofuels out of the solution. Environmentally, this could be bad. Politically, this could be really bad. The United States grew into modernization over the course of a few hundred years while China is trying to do it in a fraction of the time; I just hope that they are planning accordingly since there is plenty of room for error, assuming that they have more people and a smaller time frame.