Posted on 12/20/2022 12:06:09 PM PST by Red Badger
“biochar credits”
I put that stuff on my lawn. Where’s my credit payment?
Sustainable my arse! Is there enough used cooking oil to power every flight currently on the books? Every Day? Indefinitely?
No! Of course not. The ecofreaks are lying. Again. As usual.
Biofuels contain carbon that the plants took out of the atmosphere last year, burning them returns that carbon to the atmosphere.
Petroleum fuels contain carbon that has been buried deep underground for (b|m)illions of years and add that carbon to the atmosphere.
Why don’t we just bury our used cooking oil then instead of scattering it into the atmosphere?
Shouldn’t they be using Extra Virgin Atlantic Olive Oil?
I’ve read that vegetable oil is sometimes found in ordinary diesel fuel...and jet fuel is basically expensive diesel fuel. I wonder how vegetable oil does in the -50 temperatures commonly seen at 35,000 feet.
Bingo! That's what Biochar is, just heated to a high temperature (probably with fossil fuel) in the absence of oxygen.
Biochar, the modern equivalent of ancient farmers’ charcoal, is simply organic matter that has been “pyrolyzed” by being heated to temperatures of 400-700°C in the absence of oxygen:
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https://www.bing.com/search?q=biochar+credits&form=ANNTH1&refig=36c31253f54e44f2bc0ed5f504e59f3c&ntref=1
Stop making sense! There's nothing in it for Virgin Airlines if they do that.
Good question. Not well! Look at the tables below -- most cooking oils freeze at way too high a temp for those altitudes. Linseed oil is best in the vegetable oil category at minus 24C, and that's way too high. It seems fish oil has the best freezing point at -47C. Jet-A is minus 40C, and Jet A-1 is minus 47C.
Sounds like a lot of fish will have to die to save aviation.
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https://digeoris.com/blog/optimal-temperatures-for-freezing-vegetable-and-animal-fats/
https://www.bing.com/search?q=jet-a+freezing+point&form=ANNTH1&refig=064901cb48a9473faac4939efaa692cf
And even before that temp diesel begins congealing, and at some point, it doesn't flow well enough to be atomized through small nozzles just before combustion. The fuel would have to be pre-heated.
In some of the more sophisticated jetliners, there is a "cold fuel recirculation" system in which fuel is intermittently moved back-and-forth from a more-thermodynamically-cooled tank to another one (such as from the colder tail tank to a wing tank, for example). If this isn't enough to preserve a certain temp above freezing for the type of fuel (usually about 3 degrees C) the crew receives an alert telling them to descend (to a warmer outside air temperature). But when the airplane descends the tradeoff is the worsened fuel economy at the lower altitude, so during the planning phase the fuel freeze temp has to be compared to the expected outside air temp for a given flight, at a given duration. It's a clever system but Jet-A1 works much better than Jet-A in the colder temps (typically winter) because of the 7-degree lower freezing temp of Jet A-1.
Anyjuan else remember several ago on this site articles about vehicles traveling from coast to coast on used restaurant oil? Was touted as the greatest thing since sliced bread but all of the downsides we here pointed out arose in spades. Never saw another article about it again.
As for Canada...as I said it was about -25F when I arrived at 6PM (according to my car's thermometer). When I left at about 7:30 the next morning it was -40C (according to the TV in the lobby) and it was -40F according to my car's thermometer.It was on that day that I learned that -40 is where Fahrenheit and Celsius meet.
And BTW...love your tagline but I'm not sure I entirely agree with it. I'm not convinced that *everyone* who votes Rat is a Maoist but I *am* convinced that everyone at Rat Party Headquarters is!
They skipped science and math classes...................
Yes, I posted some of them!..............
Between the Rona scam and the global warming hoax, I guess I won’t be flying anytime soon.
5.56mm
Really! There’s probably enough used cooking oil to power a couple of flights per day worldwide. Talk about a spit in the ocean.
These people are devoid of common sense.
In 2021, America produced 1.6 billion gallons of "biodiesel" and another 0.81 billion gallons of "renewable diesel".
I'm surprised by the amount. Who is using it?
If all of that were dedicated to jet fuel, it would support 310,256 737-800 flights or 28,313 A380 flights.
I really find these numbers surprising and difficult to believe.
However, according to the FAA, there are more than 10,000,000 scheduled airline flights every year. This number does not include general aviation flights, many of which also use turbine engines burning jet fuel.
All of the above means that current American production of bio-diesel, if dedicated to aviation purposes, could support less than 0.002% of American aviation needs.
I think we're being scammed. Again. If all my sources and my arithmetic are right ...
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