markz wrote:If you wanted to drive on the cheap would you go with Woodgas or do a DIY EV Vehicle?
Thats kind of an oxymoron isnt it, because the batteries alone will be thousands of dollars. Then a grand or two for the motor, then even more money for all the other bits. So lots of up front costs, but to pay for the electricity would be cheap, then the only other question would be - How long would the batteries last before you need to spend more thousands of dollars on batteries.
That is why every time I think about what I want to do I lean towards Woodgas. I read that the one farmer could go 3000 miles on a cord of wood, that for him is free, but would cost him $50 if he were to buy it locally. Be alright out in the sticks, but for in city driving, and winter driving, that is what I ponder. Will the power be there if I select the right vehicle, like a V8 Dakota or a V10 Ram, or go 454 Chevy or 429/460 Ford.
The worlds largest and most dirty engines (large marine transport) also run on bunker oil, which is a step down even from old motor oil. The water was not providing even 1 joule of useful energy in that process, and the heavy metals in oil engine oil and long-chain partially combusted hydrocarbons must have made that vehicle a rolling environmental disaster in pickup form.Hillhater wrote:Diesel, and run recycled bio fuel made from discarded veg oil from resturants deep fat fryers.
One entrant drove the XAustralia alternate fuel race in a Toyota pick up fueled on a mix of old engine oil and water !
liveforphysics wrote: Compared to some solar panels and an EV, wood gas is infinitely more effort and makes poisonous gases. 3000 miles on a cord of wood is just bullshit, as is most of the wood-gas legends/claims. It was used for a very short period in Germany and a few other countries when impoverished and lacking all other fuel sources. You will notice the moment ANY other fuel sources became available, they stopped wood-gas entirely.
The end result is the same. In our closed system. As DD points out though, responsible/conservative/sustainable use of even the easily accessible energy must still be practiced.different chemicals
If you were left in a box with a stick, over time fungus would decompose it, bacteria decomposes the fungus remains, some methane is released, some CO2 is released. You would live through it.nutspecial wrote:The end result is the same.different chemicals
Steam-gasification processes typically yield high hydrogen contents
the gas composition is strongly dependent on the gasification process
Exhaust gas emission from an internal combustion engine is significantly lower on wood gas than on petrol. Especially the HC emissions are low on wood gas. A normal catalytic converter works well with wood gas, but even without it, emission levels less than 20 ppm HC and 0.2% CO can be easily achieved by most automobile engines. Combustion of wood gas generates no particulates, and the gas renders thus very little carbon black amongst motor oil
So my understanding is that the socalled vacuum of space is much like inside your garage if you keep the door closed and ran the car engine. It's not completely without an atmosphere, it's just less dense than on a planet. I thought we did lose heat into space.nutspecial wrote:But I still don't even quite understand how and where the accumulated daytime heat goes, at night? Not into the earth? Not convection into space? Not via visable light? What type of heat radiates thru a vacuum?
Oh, much. I don't know what to say about "Cleared the good bottom land," but they had a problem with making areas where they CONGREGATED uninhabitable. There was a community of over 100,000 living in the Cleveland area until shortly before the arrival of explorers. Between the clearing the nearby trees and no ability to transport courage over distances they're run out of wood and hunting grounds. They were also bad at sanitation so could lose an entire population to an epidemic. Squanto came home just a few years after he'd left to discover that his tribe had literally died off while he was gone. As mentioned, there was a crop in the field with noone to harvest it if the pilgrims hadn't shown up. Prior to the Aztecs there was another great civilization there but they died off. Montezuma told Cortes he was from what became New Mexico, but the community he spoke of was gone. You might find interesting to read (But I can't remember details to help you find it) there are theories about where the Mexica came from. I can't find it right now, I don't remember where, but t there is a site of apparent ruins theorized to be the former home of the Aztecs, somewhere north, such as Minnesota. Perhaps near one of the Great Lakes. They had to leave wherever because it would no longer support them, no clear explanation why.dogman dan wrote:Am I misunderstanding?
.......But I still don't even quite understand how and where the accumulated daytime heat goes, at night?
......IR !....What type of heat radiates thru a vacuum?...
There's isn't a "Better known" smallpox die off. There's pocket outbreaks, etc. There's the famous letter a British General wrote, which of course he later claimed was a "Joke," about solving the problem of some dangerous Indian tribes by passing out blankets contaminated with smallpox. When his replacement arrived shortly after he'd set the letter he was insisting the blankets had already been burned and he NEVER intended to do it for real, but why indeed would he write that in an official letter?dogman dan wrote:. . . . when Columbus brought smallpox and other European diseases to the islands.
I did misunderstand, I thought you meant a deforestation of the entire NA. Deforestation of lots of the east and south east quite plausible. But even the Anazasi culture out here was never that huge a population. So most of the west was far from deforested. To be sure, the good wood near the pueblos got cut. But not deforested out west.
My Idea of real deforestation though, that took the introduction of goats and sheep, and draft animals to haul the wood away. The wheel.
So...there are many ways to get wood gas, and you are asking about the emissions? If you want clean emissions, it can be done with wood gas, however...if you are looking at wood gas as a post-apocalyptic fuel, you will be using the easiest, cheapest, and dirtiest process...the gas composition is strongly dependent on the gasification process