Search results

  1. W

    Who’s going to Tesla after their current TDI?

    EPA provides health & environmental damage cost estimates (EDX) for many emission source sectors in its "BenMAP" table (https://www.epa.gov/benmap/sector-based-pm25-and-ozone-benefit-ton-estimates). Based on the BenMAP EDX for "Internal Combustion Engines," "Electricity Generation Units" and...
  2. W

    Life-Cycle Analysis (LCA) of Various Vehicle Technologies Per R&D GREET_2024

    "Feedstock" damages are from emissions generated in obtaining raw material for processing into fuel, e.g., emissions from well drilling, fracking, pipeline construction. "Oil and Natural Gas" damage cost factors from the BenMAP chart were used for "Feedstock." "Fuel" damages are from emissions...
  3. W

    Life-Cycle Analysis (LCA) of Various Vehicle Technologies Per R&D GREET_2024

    Argonne National Laboratory (ANL) released the latest update of its GREET model (R&D GREET_2024) on January 10, 2025 (https://greet.anl.gov/). GREET is normally updated every year. The GREET Excel model is comprised of two sections - GREET1 and GREET2. GREET1 quantifies well-to-wheel (WTW)...
  4. W

    Who’s going to Tesla after their current TDI?

    The arguments regarding diesel exhaust in that video are mostly unsupported opinions, including the assertion that DPFs are a marketing lie. Here are some contradicting data: “…Filters are so good that we have measured that in certain circumstances, when the ambient air is already polluted, a...
  5. W

    GREET_2021 LCA of Various Vehicle Technologies

    Here is an updated damage assessment of various vehicle technologies and fuel pathways using the latest version of GREET (GREET_2023 - https://greet.anl.gov/) depicted graphically. Used the same methodology as described in post #17.
  6. W

    Renewable Diesel facility - Canada

    That doesn't include the much higher upstream energy required by BEV. From the carculator results (full LCA); 2.545 MJ/km (BEV in Norway grid)/3.274 MJ/km (ICEV-d using 100% eDiesel made in Norway grid) = 0.777 - 1 = 0.222 or 22.2%. A 100% renewable electricity grid won't have any...
  7. W

    Renewable Diesel facility - Canada

    The ~70% less energy for BEV. It's actually more like 22% less in the case of diesel ICEV. Where the 70% figure coming from? Meanwhile, biomass-based diesel fuel has lower GHG emissions than BEV in the same scenario (Norway electric grid) in carculator also. Why do you believe IPCC on its...
  8. W

    Renewable Diesel facility - Canada

    That hydrogen ladder appears to lump all efuel into a single category. I've demonstrated in post #26 that epetrol is much more energy intensive to produce than ediesel. The reaction that takes place in the FT unit (which makes diesel, jet fuel and some naphtha) is highly exothermic. Thus not...
  9. W

    Renewable Diesel facility - Canada

    Where did you get >$10/gallon for ediesel? One of the links you posted in #35 ("Cradle-to-grave lifecycle analysis of U.S. light-duty vehicle-fuel pathways: a greenhouse gas emissions and economic assessment of current (2020) and future (2030-2035) technologies") has estimates the cost of...
  10. W

    Renewable Diesel facility - Canada

    This is efuel diesel, not petroleum-based diesel.
  11. W

    Renewable Diesel facility - Canada

    Broken down as follows: Chassis - 42 g/km (BEV); 41 g/km (ICEV-d) Powertrain - 10 g/km (BEV); 10 g/km (ICEV-d) Energy storage - 30 g/km (BEV); 1 g/km (ICEV-d) Fuel supply - 2 g/km (BEV); 8 g/km (ICEV-d) Maintenance - 9 g/km (BEV); 8 g/km (ICEV-d) End-of-life - 5 g/km (BEV); 4 g/km (ICEV-d)...
  12. W

    Renewable Diesel facility - Canada

    The grid used was the Norway grid which, in the carculator model, is 100% renewable electricity (mostly hydro and wind).
  13. W

    Renewable Diesel facility - Canada

    According to "carculator," a European LCA model (https://carculator.psi.ch/), synthetic gasoline has very high energy requirements, but synthetic diesel doesn't, at least if the Fischer-Tropsch (FT) method is used to make the eDiesel: "carculator" energy consumption @2025 @ Norway mix @midsize...
  14. W

    Renewable Diesel facility - Canada

    I don't understand that graphic. Why would efuels be any less "important" in that hierarchy that any other uses of H2?
  15. W

    Renewable Diesel facility - Canada

    Or use that excess capacity to produce hydrogen for synthetic fuels as you yourself suggested? This would be for synthetic ("efuels"), not biofuels ,but that would still be something used by ICEVs. We should at least be using organic wastes to produce biofuels. There's enough organic waste...
  16. W

    Renewable Diesel facility - Canada

    I don't see how that supports the idea that biofuels shouldn't be pursued or that the sale of new ICEVs should be abolished in 5 years. "...the total annual biomass that could be produced, which includes both current and potential biomass from forest and agriculture lands, as well as biomass...
  17. W

    Renewable Diesel facility - Canada

    Some more food for thought... “…Renewable liquid fuels – including renewable and biodiesel – displaced over 568 million gallons of diesel in 2018. Nearly 120 million gallons of diesel were displaced by renewable natural gas, and electricity – used to run hundreds of thousands of plug-in cars...
  18. W

    2/3rds EVs by 2032... Realistic? (and time to horde diesels?)

    Controlled (prescribed) burns can't be safely completed if the fuel loadings are too high, thus substantial thinning is required before those burns can be done without the risk of the burn getting out of control. Up to 90% of the biomass needs to be removed before a prescribed burn can be...
  19. W

    2/3rds EVs by 2032... Realistic? (and time to horde diesels?)

    Are there ANY pathways in which BEVs can even be carbon neutral over its entire lifecycle, much less carbon negative? There aren't in GREET, even with 100% renewable electricity. Is AGW a existential threat or isn't it?
  20. W

    2/3rds EVs by 2032... Realistic? (and time to horde diesels?)

    So we're just going to proceed as usual and let those wildfires burn uncontrolled releasing not only massive amount of GHGs but criteria pollutants like PM2.5, which is being felt in much of the Eastern U.S. now?
Top