Modeling RNG from Organic Waste
- JerryB
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1 month 3 weeks ago #639
by JerryB
Modeling RNG from Organic Waste was created by JerryB
I have been working with GHGenius for a few days and I have much of it sorted out. However, I do have a couple of questions:
1. On the BC LCFS tab RNG from Organic Waste does not appear in a column. Where should I be looking for this pathway? This RNG would be directed towards home heating use specifically.
2. Where do I find the input for thermal oxidizer efficiency in the model?
3. Is there any tutorial or documentation that would help me get started on avoided emissions for this feedstock?
Thanks,
Jerry
1. On the BC LCFS tab RNG from Organic Waste does not appear in a column. Where should I be looking for this pathway? This RNG would be directed towards home heating use specifically.
2. Where do I find the input for thermal oxidizer efficiency in the model?
3. Is there any tutorial or documentation that would help me get started on avoided emissions for this feedstock?
Thanks,
Jerry
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- doconnor
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1 month 3 weeks ago #640
by doconnor
Replied by doconnor on topic Modeling RNG from Organic Waste
Jerry
The BC LCFS tab is for transportation fuels so the Compressed RNG from organic waste is in column AZ on that sheet. The compression emissions can be removed by setting B253 equal to B254 on the input sheet.
The input to the model for fugitive methane emissions is F46 on the input sheet. There are multiple sources of methane in the system so there is the one input value to cover them. You will have to calculate the impact of the oxidizer outside of the model and enter the one value in F46.
The BC Ministry is working on guidance for RNG but they haven't published it yet. However, there are other organizations using 5.02b and they may use different guidance than the Ministry uses for the LCFS program.
Regards
Don O'Connor
The BC LCFS tab is for transportation fuels so the Compressed RNG from organic waste is in column AZ on that sheet. The compression emissions can be removed by setting B253 equal to B254 on the input sheet.
The input to the model for fugitive methane emissions is F46 on the input sheet. There are multiple sources of methane in the system so there is the one input value to cover them. You will have to calculate the impact of the oxidizer outside of the model and enter the one value in F46.
The BC Ministry is working on guidance for RNG but they haven't published it yet. However, there are other organizations using 5.02b and they may use different guidance than the Ministry uses for the LCFS program.
Regards
Don O'Connor
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1 month 2 weeks ago #642
by JerryB
Replied by JerryB on topic Modeling RNG from Organic Waste
Thanks Don, that will get me moving again!
Jerry Barkley
Jerry Barkley
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1 month 1 week ago #644
by JerryB
Replied by JerryB on topic Modeling RNG from Organic Waste
Don,
I have made the entries that you mentioned above and studied many of the formulas in the BC LCFS sheet to try to understand the various values presented in AZ8:AZ18.
At this point I am going to need to work on avoided emissions off the sheet since the feedstock is not landfilled currently.
Which leaves us with Fuel Distribution and Storage, Fuel Dispensing and Vehicle or Vessel Operations.
Fuel Distribution is clearly based upon CNG hauled by truck. We will be sending this RNG via pipeline. Can I simply compute the pipeline emissions and enter that value in AZ16?
Fuel Dispensing is possibly not relevant to home heating fuel?
Vehicle and vessel operations seems to me to be similar to "fuel in use." Which begs the question of what is RNG's fuel in use emissions in BC? Under ISCC for example it would be zero, fossil gas would be 50 to 65 depending. Any help here is appreciated.
Thanks again for your help on this,
Jerry
I have made the entries that you mentioned above and studied many of the formulas in the BC LCFS sheet to try to understand the various values presented in AZ8:AZ18.
At this point I am going to need to work on avoided emissions off the sheet since the feedstock is not landfilled currently.
Which leaves us with Fuel Distribution and Storage, Fuel Dispensing and Vehicle or Vessel Operations.
Fuel Distribution is clearly based upon CNG hauled by truck. We will be sending this RNG via pipeline. Can I simply compute the pipeline emissions and enter that value in AZ16?
Fuel Dispensing is possibly not relevant to home heating fuel?
Vehicle and vessel operations seems to me to be similar to "fuel in use." Which begs the question of what is RNG's fuel in use emissions in BC? Under ISCC for example it would be zero, fossil gas would be 50 to 65 depending. Any help here is appreciated.
Thanks again for your help on this,
Jerry
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- doconnor
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1 month 1 week ago #645
by doconnor
Replied by doconnor on topic Modeling RNG from Organic Waste
Jerry
The Fuel distribution emissions are not based on trucking the CNG. The fuel distribution emissions include methane leakage from the gas distribution system.
For the transportation by pipeline you would enter the pipeline distance in BJ 95 on the Input sheet.
Fuel dispensing is the final compression energy, as I said in an earlier post setting B253 equal to B254 will eliminate these emissions.
The fuel use on the BC LCFS tab assume that the fuel is used in transportation and so it includes the methane and N2O emissions. These vary between the LDV and HDV applications which is why the cell on the BCLCS sheet has a note. The value in the model assumes an HDV application.
Regards
Don O'Connor
The Fuel distribution emissions are not based on trucking the CNG. The fuel distribution emissions include methane leakage from the gas distribution system.
For the transportation by pipeline you would enter the pipeline distance in BJ 95 on the Input sheet.
Fuel dispensing is the final compression energy, as I said in an earlier post setting B253 equal to B254 will eliminate these emissions.
The fuel use on the BC LCFS tab assume that the fuel is used in transportation and so it includes the methane and N2O emissions. These vary between the LDV and HDV applications which is why the cell on the BCLCS sheet has a note. The value in the model assumes an HDV application.
Regards
Don O'Connor
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