If you look at the "sliced open" Toyota FCV you will see two Hydrogen tanks and in between a largish (slightly larger than the Prius' hybrid) battery pack. So, one tank under the trunk and one under the rear seat. The two front seats were directly over the fuel cell and the front of the vehicle had the electric drive. As said before - when (not if) FCV fails, just rip out the tanks and fuel cell and mount a large capacity battery and a charger. instant EV.
Note: since Hydrogen / Fuel Cell is a contentious issue, it is not recommended to continue discussion of its merits & drawbacks, so let's steer back the discussion to EVs. Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: cwa...@proxim.com Private: http://www.cvandewater.info Skype: cor_van_de_water Tel: +1 408 383 7626 -----Original Message----- From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Peter Eckhoff via EV Sent: Wednesday, June 25, 2014 3:48 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] Hydrogen/EV thoughts AC Propulsion had a Power Point slide where they compared the efficiency of various "fuels". Their standard was an EV with the equivalent of 50 MPG. A similar vehicle, powered by hydrogen produced from reformatted natural gas and fed into a fuel cell, was the equivalent of 30 mpg while hydrogen produced by electrolysis was the equivalent of 12 mpg. There a number of technical problems with fuel cells: 1) A fuel cell life expectancy was about 2,000 hours. Since my average driving speed is 30 mpg, I would have to replace my fuel cell every 60K miles. Therefore, a different fuel cell construction technique would have to be used. 2) A pack of battery or electrolytic capacitors or an ICE was needed to aid in acceleration. Therefore, a faster way of transferring the "proton" through the electrolyte is needed. Think of a proton as a person needed to run through air as opposed through water or molasses. 3) The storage of hydrogen to go 300 miles in a Toyota Camry needed 3 specially carbon wound tanks where the internal pressures reached 700 bar. A bar is 14.7 pounds per square inch. This equates to 5 tons per square inch in a "2 ton" vehicle. Catastrophic failures would be catastrophic. The hydrogen, therefore, needs to be stored in a molecular sponge where the hydrogen freely flows in and out of storage without much energy inducements. One real scheme required 800 degree Fahrenheit temperatures to release the hydrogen from storage. Given the number of technical problems that need to be solved, I don't see hydrogen fuel celled vehicles coming into common use anytime soon. _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)