Hybrid Car – More Fun with Less Gas

A Global Solar/Hydrogen Fuel-Cell System - Page 2

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Posted by Androcles on April 10, 2010, 7:09 am
 


The problem with hydrogen is storing it, either cryogenically or
under pressure. A car running on hydrogen can become a fireball
if the tank is ruptured in a fender bender,  and whilst that is true
for gasoline/petrol the risk is far greater. The use of gas bags
ended with the Hindenburg. We all know that solar energy can be
stored by electrolyzing water, but the safety issue has not been
solved economically.


Posted by Mauried on April 10, 2010, 7:40 am
 
On Sat, 10 Apr 2010 08:09:07 +0100, "Androcles"


An understanding of the concept of exergy. or the economic value of
energy is needed to understand why electricity to hydrogen plants dont
work.
You never deliberately convert a high grade of energy (electricity)
into a lower grade (hydrogen)  , if you have to convert it back later.


Posted by Guido on April 10, 2010, 7:35 pm
 Mauried wrote:


Exergy? Or do you mean Entropy? Either way, every conversion of energy
costs energy to accomplish. Even with batteries. Which is why I think
instead of researching battery tech, we ought to research capacitor
tech, and store electricity AS electricity. And something tells me a
capacitor lasts a bit longer than a battery too.


Posted by Josepi on April 10, 2010, 8:52 pm
 Good idea but the capacity isn't there yet. The exergy would be much higher.


Mauried wrote:

Exergy? Or do you mean Entropy? Either way, every conversion of energy
costs energy to accomplish. Even with batteries. Which is why I think
instead of researching battery tech, we ought to research capacitor
tech, and store electricity AS electricity. And something tells me a
capacitor lasts a bit longer than a battery too.



Posted by J. Clarke on April 10, 2010, 3:13 pm
 On 4/10/2010 3:09 AM, Androcles wrote:

When a Honda Clarity levels Hollywood get back to us.




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