esem je napisal/-a:Trenutno se zdijo najboljša varianta gorivne celice za proizvodnjo elektrike (stop & go, regeneracija itd). Na kaj bodo pa gorivne delale, je pa še odprto vprašanje. Vodik se zdi zaradi problemov shranjevanja, distribucije in predvsenm pridobivanja, za kar je potrebna precej velika količina energije, omejena, zasilna, začasna rešitev. Se pa na problemu pridobivanja masovno raziskuje. To vsekakor podpiram. Povdarjam samo, da takle BMW 7 ni drugega kot promocija, čeprav v čakanju na kaj boljšega. Nekaterim je to celo pesek v oči.

Ravnokar sem videl, da je mlad hrvatski znanstvenij izumil prenos elektrike po zraku. Dvomim, da je uporabno za večje moči, bomo videli. Če je sploh kaj na tem?
lp

andrej777 je napisal/-a:
Sigurno imajo gorilne celice večje zmožnosti samo trenutno očitno še ne. ker drugače BMW nebi podru skoraj vseh rekordov kar se tiče vozil na vodik. Da ne govorimo o prednosti da avto dela tako na vodik kot na gorivo.

Sigurno pa to ni tehnologije neke daljne prihodnosti a trenutno veliko bolj primerna kot gorilne celice.

andrej777 je napisal/-a:

esem je napisal/-a:Trenutno se zdijo najboljša varianta gorivne celice za proizvodnjo elektrike (stop & go, regeneracija itd). Na kaj bodo pa gorivne delale, je pa še odprto vprašanje. Vodik se zdi zaradi problemov shranjevanja, distribucije in predvsenm pridobivanja, za kar je potrebna precej velika količina energije, omejena, zasilna, začasna rešitev. Se pa na problemu pridobivanja masovno raziskuje. To vsekakor podpiram. Povdarjam samo, da takle BMW 7 ni drugega kot promocija, čeprav v čakanju na kaj boljšega. Nekaterim je to celo pesek v oči.

Ravnokar sem videl, da je mlad hrvatski znanstvenij izumil prenos elektrike po zraku. Dvomim, da je uporabno za večje moči, bomo videli. Če je sploh kaj na tem?
lp

Sigurno imajo gorilne celice večje zmožnosti samo trenutno očitno še ne. ker drugače BMW nebi podru skoraj vseh rekordov kar se tiče vozil na vodik. Da ne govorimo o prednosti da avto dela tako na vodik kot na gorivo.

Sigurno pa to ni tehnologije neke daljne prihodnosti a trenutno veliko bolj primerna kot gorilne celice.

Spiegel comes down hard on BMW Hydrogen 7

Posted Nov 18th 2006 1:13PM by Mike Magda
The influential German magazine Spiegel isn't impressed with the energy balance presented by the luxurious BMW Hydrogen 7. Claiming the vehicle will "put more strain on the environment than a heavy diesel truck," the magazine pointed out the car requires 50 liters of hydrogen to drive the same distance as 13.9 liters, or 3.7 gallons, of gasoline. Then the magazine went into the energy and money required to produce the currently scarce supplies of hydrogen. BMW is one of the few companies experimenting with hydrogen in an internal combustion engine. Ford has a small program with a V10 engine in an airport transport bus, but BMW is tempting premium consumers with the technology. Early buyers are celebrities but BMW won't divulge any names.

[Source: Christian Wust/Spiegel]

On-board electrolysis unit to generate hydrogen for injection to improve MPG

Posted Nov 27th 2006 7:52PM by Sam Abuelsamid
Global Energy Options and H to-go have developed a retro-fit device called the Hydro Fuel System Hydro-charger that is designed to help improve fuel economy. Texas based H to-go markets the system as MAPSOE (for Most Abundant Power Source On Earth). The device consists primarily of an on-board electrolysis unit to produce hydrogen from a water tank and a system to inject the hydrogen into a standard internal combustion engine. The company claims to have done testing on a variety of engines ranging from a Chevrolet pickup with a 5.3L V-8 to a Freightliner truck with Detroit Diesel engine and seen improvements in fuel efficiency ranging from 33 percent to almost 73 percent.

It makes sense that injecting hydrogen would improve fuel efficiency and clean up the emissions. Substituting an alternate fuel to replace some of the gas or diesel will increase the number of miles you can go on each gallon. However, producing the hydrogen on board via electrolysis requires electricity that must come from the alternator. That means a lot of extra load on the engine, which would be tough to make up from the hydrogen. The test results from the company don't give any details on the test procedures, so it's not clear if they were actually using power from the engine to drive the electrolysis unit. If they can actually produce hydrogen using less energy than the hydrogen produces, this could be a really benefit. Unfortunately, I'll have to see some real data before I put one of these on my car.

[Source: H To Go via GreenCarCongress]

BMW: Hydrogen cars 30 years away

BMW — the company that months ago touted a "production" hydrogen-combusion 7-Series — says the dream of hydrogen-powered cars emitting only water vapor is 30 years away.

"Hydrogen is considered to be one of the technologies that might be an answer in the long-term future, but it is a very long-term perspective," BMW's sales manager for Eastern Europe to the Asia-Pacific region, David Panton, told The Age in Australia.

"If we were able to solve all the (technical) issues, it would still take 20 to 30 years to get distribution channels in place across the world," he said. In late December, Honda said it would be ready to sell reasonably affordable hydrogen cars by 2018. Of course, selling such cars would require an infrastructure to support them.