Re: [PSUBS-MAILIST] Hydrogen Fuel Cells coming closer for Psubs?

["Mad Pirate Shin" <psub_only_temporary@hotmail.com>]

  I was wondering the same thing.  Perhaps some sort of 'scrubber' could 
chemically afix or absorb any stray hydrogen gas in the separate fuel cell 
pod.  I reckon the feasability of such a 'hydrogen scrubber' would be 
dependant upon how much gas the fuel cell leaks.
  One might even flood the separate pod holding the fuel cell with an inert 
gas, floating the hydrogen to the roof, while designing your electrical 
cables and equipment into the lower half of the pod.
  On a larger submersible, the large output and small space of the fuel cell 
easily offsets it's cost and 'newness,' but most people using their PSubs 
for recreational use probably won't want to spend more than five hours at a 
time crammed into their PSubs.  A small PSub needing only five hours of 
power can probably get more power-per-volume-of-equipment from standard 
batteries than from a commercial fuel cell.  Of course the power and 
duration needed for your particular submersible defines how much more 
compact a fuel cell is in comparison to batteries.  But at first glance it 
would seem that a fuel cell system is larger than a battery system until you 
get into the live-a-board or working size submersibles.
  I would love to hear the average time spent underwater per dive and how 
long it takes to deplete the batteries.  Those with with their own PSubs 
please relate yer experiences.

               Regards,
               Shin





"And further more, be advised that although this is actually a live 
broadcast and is being sent out at this very moment, it is quite possible 
that it may arrive tomorrow, right now, or perhaps even yesterday." -Serial 
Experiments Lain ep#8









From: Ian Roxborough <irox@ix.netcom.com>
Date: Fri, 6 Dec 2002 10:05:49 -0800

On Thu, 05 Dec 2002 22:53:05 +0100
MerlinSub@t-online.de (Carsten Standfuss) wrote:

 > - Hydrogen leakage.. most available system are not 100 %
 >   hydrogen tight.. no problem in a car.. but in a sub..
 >   .. maybe a candle can fix that..

I wonder if putting the fuel cell in some sort of container
and placing hydrocap on the container and also a pressure gauge
would be a feasible way of monitoring and preventing hydrogen
leaks.

Ian.


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