Topic: Gas flaringSubscribe | Previous | Next
Arsham Atighechi 12/3/2018
Hi,
I am currently setting up a model for Iraq, most of the model is fully set up except for one of the major losses, which is gas flaring. We are looking to create a scenario where the gas flaring is reduced to 0 over the course of the modeling period, and then compare it to a scenario where the gas flaring stays the same. We have checked the exercise which states that you can use the surplus production and set it to surplus wasted. However, we have natural gas as a primary resource which does not allow us to change the surplus rule. We have also attempted to add it to the oil refinery as an output fuel and then added the surplus rule but that did not work either. Finally we've also attempted to add it as a loss under transformation, but when we change the percentage loss there is a very small change in the emissions from that actual branch.
Thank you in advance
MVH Arsham
Emily Ghosh 12/5/2018
Hi Arsham,
The Surplus Rule only works when a process is running at full capacity (a dispatch rule setting). When a process runs at full capacity, it produces more output than demanded, resulting in the surplus.
In order to create a surplus of flared gas, my suggestion is to create a new transformation module and force the generation (and subsequent wastage) of flared gas. I've included an example of the new process module in this post. Here are the steps:
- Add a new fuel called "Flared Gas" through General:Fuels. Ensure it inherits the properties of Natural Gas.
- Add a new transformation module called "Gas Flaring". In the Transformation Module Properties dialog box, check the Capacities box.
- Change the Output Fuels for this module to "Flared Gas", and set the Surplus Rule to "Surplus Wasted".
- Add a new Process with the Feedstock Fuel assigned to "Flared Gas". Add emissions branches under the Feedstock Fuel, and ensure the Feedstock Fuel Share is set to 100%
- In the Flared Gas Process branch, change the Dispatch Rule to Full Capacity, input the Historical Production of flared gas, and set the Exogenous Capacity to the flared gas discharge rate.
Then, in your scenario, change the exogenous capacity to 0 in the target year, and you should be able to compare the difference to the baseline.
Hope this helps!
Emily
2018Dec05 Gas Flaring.leap [4]
Arsham Atighechi 12/11/2018
Hi Emily,
Thank you very much, it worked out great.
We have one more question, we have input all our electricity generating plants individually, which adds up to about 30 plants. Is there any way to aggregate the power plants by technology in the results view? For instance, when we view outputs by output fuel we would like to see how much electricity is produced by all hydro combined, all natural gas combined and so on.
Thank you in advance
Yours sincerely,
Arsham
Emily Ghosh 12/11/2018
Hi Arsham,
Glad it helped.
There are a few ways to aggregate results. If you are specifically interested in viewing the plants by fuel type, view the results for "Outputs by Feedstock Fuel", and then change the selection in the legend menu to "All Fuels".
Alternatively, you can assign tags to each process branch, and filter results by "All Tags". For more information on how to tag branches, refer to the following help page: https://www.energycommunity.org/Help/Tagging_Branches/Tagging_Branches.htm
Thanks!
Emily