Development and use of the GREET model to estimate fuel-cycle energy use and emissions of various transportation technologies and fuels

Real-World Emissions from Conventional Passenger Cars

“…9 We exploit a new model created by one of us (Wang) to predict the upstream emissions (#7). 10 Our estimate of lifetime emissions in grams per mile from MY93 vehicles is shown in Table 1a, while our projection for MY2000 and MY2010 vehicles is shown in Table 2. Figure 1 presents our estimates graphically.…”

Discussion

“…The Argonne National Laboratory has conducted detailed analyses of cornbased ethanol, among many other transportation fuels, both prior to (Wang, 1996) and following (Wang et al, 1999(Wang et al, , 2003 the 1997 study. We acknowledged in our 1997 study that it was funded by an Illinois state agency.…”

“…[7] We did not mention energy intensity of ethanol transportation in our report, but it was included in our analysis with a GREET default assumption. An energy efficiency of 97.8% was used for ethanol transportation in that GREET version (Table 5 of Wang, 1996). ).…”

Assessment of well-to-wheel energy use and greenhouse gas emissions of Fischer-Tropsch diesel.

“…Since 1995, with funding from DOE's Office of Transportation Technologies (OTT), Argonne has been developing the GREET model as an analytical tool for use by researchers and practitioners to estimate WTW energy use and emissions associated with transportation fuels and advanced vehicle technologies. Argonne released the first version of the GREET model -GREET 1.0 -in June 1996 (Wang 1996). Since then, Argonne has released a series of GREET versions with revisions, updates, and upgrades.…”