On Fri, 28 Mar 2003 02:54 pm, paul van den bergen wrote: > On Fri, 28 Mar 2003 01:01 pm, MH wrote: > > "It takes a pound of coal to generate the electricity to light a > > 100-watt bulb for 10 hours. For every pound of coal we burn, nearly > > three pounds of carbon dioxide go into the atmosphere." > > Coal is bad enough, but concrete (portland cement) is worse. > for every ton, 5.5 tons of CO2 are produced. > > > I like the statement "We don't really know what is going on, but you can be > pretty sure that we can't go on dumping all this junk into the environment > and not have a dramatic and adverse effect" or words to that effect. > > I have heard plenty of ideas about reversing green house evvects, from > sequestering liquid CO2 in geosinks to Fe seeding the southern ocean to tie > up CO2 as boita that sink down the thermocline...
actually, brown coal is even worse... in Vic, the majority of power comes from Brown coal - very low S which is about the only good thing I can say about it... brown coal has about 60-70% water. Dry it has a energy of ~ 23MJ/kg. Wet it is only 3-5 MJ/kg. once you make electricity out of it you loose most of the power transmitting it 100's km to Melbourne.... works out at something less than 10% efficient... seems to me a better use would be to plow it into the arid farm soil as a fertaliser/water retention booster... -- Dr Paul van den Bergen Centre for Advanced Internet Architectures caia.swin.edu.au [EMAIL PROTECTED] IM:bulwynkl2002 It's a book. Non-volatile storage media. Everyone should have one. ------------------------ Yahoo! Groups Sponsor ---------------------~--> Make Money Online Auctions! Make $500.00 or We Will Give You Thirty Dollars for Trying! http://us.click.yahoo.com/yMx78A/fNtFAA/46VHAA/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/
