On Wed, 21 May 2003 05:21 am, kirk wrote: > Even a broken clock is right twice a day. If we only judge information on > how politically correct the source is then we may as well join the crowd > and burn the heretics at the stake.
yes, I agree. but only twice a day. You wouldn't, for instance, use it to set your watch. I figure the same applies here. I would be much happier if the details of the article were backed up with a bit of rigerous engineering - and there are plenty of good journals working in this area, as it's not exactly straight out of left field.... > > The migration rate of hydrogen is such that even though it has the widest > flammability range of any gas it is less of a hazard than methane given the > same small leak. I think the thrust of this comment is that replacing > methane with hydrogen for cooking may be not the danger many think it is. I wasn't talking about the danger of explosion from H migration, although for storage that is a problem and I would imagine there is a small risk for enclosed spaces. Such as the boot of a car. Mind you, petrol probably has similar risks.... More prevelent to my mind is the danger of embrittlement caused by Hydrogen. This is particluarly relevent to welded materials, but applies equally well to a number of plastics. there are techniques to mitigate H migration (multi-layerd materials, etc.) but they are not cheap to manufacture like petrol tanks (which are multi-layered blow-moulded plastic - PP and EVA usually). QC is therefore a further cost... getting it wrong could lead to unpredictable catastropic failure... not pretty. On the other hand, I think converting to H as a fuel is not a bad thing. well, as a measure towards sustainable fuel use. the alternative is to gear the PetroC industry to using it's industrial scale processing to make higher Mw fuels.... I still reakon that the disparity on spending between renuables and Petro resources borders on criminal > > As for crack-pot the name of Immanuel Velikovsky comes to mind. When he was > vindicated and the bastions of knowledge were found to be incorrect the > lack of apology was appalling. I am not impressed with that kind of > behavior. Argumentum ad hominum is pathetically weak and should be > abstained from. The facts should be adequate for discussion. Science, I am afraid, is an irrevokably socially embedded activity... just like religion :-) -- Dr Paul van den Bergen Centre for Advanced Internet Architectures caia.swin.edu.au [EMAIL PROTECTED] IM:bulwynkl2002 "And some run up hill and down dale, knapping the chucky stones to pieces wi' hammers, like so many road makers run daft. They say it is to see how the world was made." Sir Walter Scott, St. Ronan's Well 1824 ------------------------ Yahoo! Groups Sponsor ---------------------~--> Get A Free Psychic Reading! Your Online Answer To Life's Important Questions. http://us.click.yahoo.com/aM1XQD/od7FAA/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/
