well i have spent at least some of the day looking at what is posted on the web in relation to the by products of hydrogen combustion.
interesting, and although BMW and maybe Ford are aiming to have a hydrogen powered car on the market within 2 years, and i know that Honda have a fuel cell car they are positioning for the market place, there do seem many problems still to be solved, not least the ability of hydrogen powered units to be easily and cheaply made on a mass production basis.
much of the data on the web seems to be at least 4 years out of date, so either people are not posting for secrecy reasons, or funding for large scale research is difficult to find. that i think is particularly so.
however one major problem seems to be that in open combustion, the units produce NOx which is a nasty, and requires the expenditure of considerable sums to clean up. catalytic converters etc are required
and there so far seem to be no plans to retain the water by product for either re-use, or to stop waste. no where could i find accurate data that suggests that the water produced is "potable" ie drinkable.
although the research seems to suggest that the hydrogen engine is more efficient than a petrol or diesel one, the whole driving process is different and the range of the hydrogen unit seems to be as small at this time as that of a battery car.
BMW will i understand put the engine into a 7 series vehicle, but that means that it will not in the short term become a mass item, and you do wonder how many garages are going to be available to re-charge the tanks. or do you just go down to BOC for a fill up, if so what are the tax implications :twisted:
nowhere so far have i found any actual figures showing how efficient producing hydrogen from water, using it and then taking the water by product is.
and as you nick have said the initial process seems very expensive to produce enough product to work and replace gasoline in the immediate future. i also wonder how much expensive extra materials are needed to be used in the production engines to take advantage?
as an old fashioned engineer who learnt much about aerodynamics, and
car dynamics from practical experience, i do not mind being told i am ignorant. it is too easy to believe the computer models, and not to take account of practicality.
final thought for the day, the major problem wherever for solar and even wind power is the storage of the electricity produced, that is why the unit in the clinic is so useless. it may well be able to produce enough power to run the fridge and light bulb, but not if the power input cannot be stored and then re-processed. if solar power is so good, why are so many africans using the trevor bayliss wind up gadgets?
i am happy to have learnt more about areas of which i am ignorant or have less knowledge than i hoped. however the diversity of opinion shows that there is no one way to cure this perceived problem.
still say that denying the naysayers does the promoters of global warming any favours cause the costs of developing the new technologies will be so high, they will marginalise people, and probably cause more strife than we already have.
paul :wink: