BMW 7 hydrogen

Electrolysis and liquefaction of hydrogen requires much electric power. The vehicle needs about 8 times more electric power than a plug-in-hybrid of the same size.



The electrolysis requires about 40 kWh per kg hydrogen. To bring the hydrogen into the tank, further 12 kWh for liquefaction are necessary. The consumption ist 3,9 kg hydrogen for 100 km. This are 202,8 kWh / 100km

The photovoltaic world production was 2006 only 0,4 Watt peak per human. For 20.000 km a year with the BMW 7 hydrogen are in Germany about 40 kW photovoltaic required.

The future of our mobility will be electric, but with a high efficient system, no substantial chain of looses like electrolysis, liquefaction and internal combusion engine, disadvantaged by 1:8 aginst the state of the technology.

Drive energy CO2 emission g/km
Gasoline 12 Cylinder 13,5 l
319
Diesel 8 Cylinder 9,5 l
253
Lignite 202,8 kWh
2231
Coal
1825
German electricity mix 2007
1042
natural gas
740
Austrian electricity mix
511
Austrian railways electricity mix
243
Photovoltaic / Wind energy
81


It demands the extrem clear energy mix of the Austrian reilways - 86% water power, 14% fossile - to be at the CO2 emission at last between 8 cylinder Diesel and 6 cylinder Diesel.
CO2 carbon dioxide
Overview about different aspects of the green house gas prolems. Above all, what will it cost to reach again the normal state?


Hydrogen
Where will hydrogen as a storage medium determine our energy future and where will the hydrogen technology fail by more suitable methods?


Hydrogen fuel cell vehicles
Directory over all our reports and comments about the hydrogen fuel cell technology in the field of mobility




  CO2 and mobility


How much greenhousegases GHG are emitted at what sort of mobility? What sort of mobility is possible according to climate change and other limiting factors?

45 km/h scooter CO2 emission 45 km/h scooter CO2 emission
The electric scooter with lead batteries is even with electric power from a lignite power plant better than a 4 stroke engine scooter. The red lantern of the worst has the 2 stroke engine scooter.


Renault Kangoo CO2 emission city traffic Renault Kangoo CO2 emission city traffic
The Kangoo is an ideal study object about the CO2 emission of different drive concepts, because it exists as gasoline, diesel, natural gas and plug-in-hybrid vehicle.


Renault Kangoo carbon dioxide out of town Renault Kangoo carbon dioxide out of town
Out of town has also the ICE internal combustion engine a good efficiency. The total superiority of the electric drive system is out of town clearly smaller.


Bicycle CO2 emission Bicycle CO2 emission
Also the production of aliments causes the emission of GHG green house gases. So even the bicycle driver can not be spared out of a CHG emission calculation.


Economize CO2 by renewable energy Economize CO2 by renewable energy
Usually, the electric power production by renewable energy is compared with the production by fossile energy and the CO2 saving is calculated by this.


Carbon dioxide values and how they are calculated
It often happens, that different CO2 emissions are published for the same process. Overview about different methods to calculate the GHG emissions of a process.




Context description:  luxury upper class car cars
Co2 carbondioxide Ghg greenhousegas Emission Co2emission carbondioxideemission Ghgemission greenhousegasemission Emissons Co2emissons carbondioxideemissons Ghgemissons greenhousegasemissons study Co2study carbondioxidestudy Ghgstudy greenhousegasstudy studies Co2studies carbondioxidestudies Ghgstudies greenhousegasstudies traffic mobility trafficemission mobilityemission trafficemissons mobilityemissons trafficstudy mobilitystudy trafficstudies mobilitystudies event events date time month 8 Aug August summer