19. Comparison of Biodiesel and Hydrogen as Fuels of the Future 268 gallons 20 gallons Tank capacity required for 1,000 mile range in conventional sedan Currently 50-100 times as expensive as existing engines. Comparable to existing vehicles Cost of engines 30-70 years optimistic assumption 5-15 years Time scale for wide scale use Highly flammable, high pressure storage tanks pose a large risk due to store mechanical energy, as well as flammability/explosiveness Flash point over 300 F (considered “not flammable”) Safety To produce enough clean hydrogen for our transportation needs would cost $2.5 trillion (wind power) or $25 trillion (solar) For an estimated $169 1 billion, enough algae farms could be built to completely replace petroleum transportation fuels with biodiesel Large scale fuel development cost analysis 0.66 units (steam reforming of natural gas) 3.2 units (soy) 4.3 units (rapeseed) Fossil Energy Balance [higher is better] No system currently exists, would take decades to develop. Would cost $176 billion to put one hydrogen pump at each of the filling stations in the US. Can be distributed with existing filling stations with no changes. Fuel Distribution System Electrolyzing water (most likely using fossil fuel energy) or reforming fossil fuels. Most likely non-renewable methods with large net CO2 emissions Can be used in existing diesel engines, which have already been in use for 100 years Technological Readiness Hydrogen Biodiesel
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22. Mobile Biodiesel Education Department of Energy Grant for $52,000 for 6 six workshops across North Carolina
Davis, S., Diegel, S. Transportation Energy Databook: Edition 24. Oak Ridge National Laboratory,
Vegetable oil is highly consistent 16 – 23 carbon in the ground for 250 Myrs is rancid (geologically speaking) some chains get smaller natural gas, some get longer asphalt, some wrap on them selves creating cyclic compounds that mutate cells aka cause cancer, Diesel fuel is 20% by volume pure PAH’s in the liquid form it is toxic and that quality remains in the emissions and worse yet the PAH’s “stick” to the particulates such that they remain near street level and create a pathway into the lungs. Biodiesel has none of this in the liquid form so that there is much less in the emissions, much like the smell of a camp fire crossed with a kitchen
What is the latest number? Recent changes to specification? Cold filter plug point. Acid number gives you a sence of rate of oxidation.– good sign of microbrial growth. Glycerin- full reaction? Davis, S., Diegel, S. Transportation Energy Databook: Edition 24. Oak Ridge National Laboratory,
Davis, S., Diegel, S. Transportation Energy Databook: Edition 24. Oak Ridge National Laboratory,
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