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 GHGenius 4.02 TagsDME
Electric Vehicles
Electricity
Ethanol
Feedstock
Fischer Tropsch
Fuel Cell Vehicles
GHGenius 4.02
Manual
PHEV
PyrolysisOils
Wheat Straw
Wood
 GHGenius 4.02 Manual Vol 2
 Prepared October 2012
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The GHGenius user manual has been updated to version 4.02 of the model. The manual is split into two volumes. Both volumes are organized by sheet in the model.

Volume 1 of the manual documents the structure of the model, the important parameters, and the similarities and differences with the LEM model.

Volume 2 of the manual documents the data and data sources that are used in the model.

The manual is a work in progress. It is the intention to continually update the manual as new versions of the model are released.


Tags: GHGenius 4.02 - Manual
 GHGenius 4.02 Manual Vol 1
 Prepared October 2012
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The GHGenius user manual has been updated to version 4.02 of the model. The manual is split into two volumes. Both volumes are organized by sheet in the model.

Volume 1 of the manual documents the structure of the model, the important parameters, and the similarities and differences with the LEM model.

Volume 2 of the manual documents the data and data sources that are used in the model.

The manual is a work in progress. It is the intention to continually update the manual as new versions of the model are released.


Tags: GHGenius 4.02 - Manual
 Advanced Biofuel Update
 Prepared October 2012
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The US National Renewable Energy Laboratory has published a number of techno-economic assessments over the past several years on advanced biofuel pathways. These studies include:
∑ Ethanol via biochemical processes using agricultural residues.
∑ Ethanol via thermochemical process using woody biomass.
∑ Gasoline via thermochemical process using woody biomass.
∑ FT Distillate via thermochemical process using woody biomass.
∑ Gasoline and Diesel fuel via pyrolysis.


Additional information has been found for the wood to DME process and this information is used to update this pathway in GHGenius. All of these pathways are already in GHGenius, having been added over the years. This work updates the default values in the GHGenius model and uses the updated data to model and report on the energy balances and GHG emissions of the pathways. This includes undertaking sensitivity analysis on the important variables.

In GHGenius there are multiple sub-pathways for some of these fuel systems, for example there are four agricultural feedstocks and a wood feedstock for the biochemical route and the pyrolysis pathway has woody biomass feedstock and agricultural residues. We have developed consistent inputs for all of these sub-pathways based on the NREL data, whereas they only provide data for one feedstock.

There are process developers that have hybrid systems, those that use both biochemical and thermochemical process to convert biomass to transportation fuels. These can also be modelled in GHGenius by adapting one of the existing pathways. Two examples of this are presented, but the inputs required for these systems are not included as default values in the model.

The results are presented for Canada for the year 2012 using the IPCC 2007 GWPs, unless otherwise stated. The version of GHGenius that accompanies this report is version 4.02. This version also has some updates to the electric and fuel cell vehicle pathways, which are described in a separate report. The GHGenius manuals have also been updated with the information used in this report.


Tags: DME - Ethanol - Feedstock - Fischer Tropsch - GHGenius 4.02 - PyrolysisOils - Wheat Straw - Wood
 EV Update
 Prepared October 2012
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There is increased interest in electric vehicle mobility with the commercial availability of electric vehicles from several manufacturers and the increased visibility of fuel cell vehicles in large demonstration projects in Canada and elsewhere in the world.

The functioning of the EV section of the model had been reviewed and, while it was functioning correctly, there were a number of key input values and assumptions that have a large influence on the model results. Many of these date back to the original LEM model. With the new electric vehicles on the market, it has been possible to update many of these parameters and algorithms with values that are representative of the current EV models. Two of the key issues investigated were the factors for changes in vehicle weight as a function of battery weight, and the changing efficiency of the vehicle as total weight changes.

Data has been found for the relative performance of EV vehicles for the new vehicles that have been tested by the US EPA. Other issues investigated include the vehicle range, the charging efficiency, the battery efficiency, battery specific energy, battery cycle life, and depth of discharge. The model has maximum and minimum default values for all of the parameters and they have been evaluated to ensure that they are realistic.

The plug-in electric vehicle pathway was added to GHGenius in 2006. There is much more known about these vehicles now that some are commercially available. The latest information on these systems has been reviewed to determine if any changes are required to the structure of GHGenius to better model these vehicles.

Since electricity is the focus of this work, the electric power forecasts in the model have been updated from the 2009 to 2011 NEB forecast. At the same time, the structure of the model has been changed from new forecast values every five years to a value for every year of the forecast period.

There is finally some public information on the performance of FCV that has been reviewed and used to improve the model. The B Class Mercedes is available in both gasoline and FCV variations and test data is available on the Honda Clarity FCV, although there isnít an exact match gasoline vehicle.

Tags: Electric Vehicles - Electricity - Fuel Cell Vehicles - GHGenius 4.02 - PHEV
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