Hello, It seems that the same is true for charging a battery system, only in this case you are working against the electric potential of the battery cell, instead of the mechanical potential of the pressurized system. If a hydrogen tank is initially empty, it takes more energy per unit to fill it as the pressure rises. The same is true for a deep-cycle battery system - as you run the electrochemical reation to charge the battery, you have to input more energy to run the reaction uphill? I'm guessing that these efficiencies can all be improved - just as the efficiency of biomass to ethanol conversion has increased over the years.
Cheers, Karus On Wed, 30 Apr 2003, martin wrote: > An electrochemical reaction where the desired product has to be forced > out at a relatively high pressure requires more energy to push the > reaction over equilibrium. > > kirk wrote: > > >I'm not aware of any change in potential with pressure. You have any > data to > >the contrary? > >Kirk > > > >-----Original Message----- > >From: martin [mailto:[EMAIL PROTECTED] > >Sent: Tuesday, April 29, 2003 9:29 PM > >To: biofuel@yahoogroups.com > >Subject: Re: [biofuel] World's first hydrogen service station opens in > >Iceland > > > > > >Down goes efficiency. > > > >kirk wrote: > > > > > > > > > -- > --- > Martin Klingensmith > http://nnytech.net/ > http://infoarchive.net/ > > > > Yahoo! Groups Sponsor > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuels list archives: > http://archive.nnytech.net/ > > Please do NOT send Unsubscribe messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > ------------------------ Yahoo! Groups Sponsor ---------------------~--> Get A Free Psychic Reading! Your Online Answer To Life's Important Questions. http://us.click.yahoo.com/O10svD/Me7FAA/uetFAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
