Sue Paul 3/30/2009

Like

3815 Views

Hi there.

I have a question about the difference between results data in the Energy Balance View versus the transformation module balance tables (in the Results View). Basically, I specified a shortfall rule for gasoline, kerosene, residual fuel oil and diesel to not import (ie requirements remain unmet).

However, when I go to the Energy Balance view, it appears as though these fuels are being imported anyway, and that there is no unmet demand. But if I go to the Results view, and select Transformation -> Module balance, then that view indicates that the above fuels were not imported (ie the imports row is zero) and that there are, in fact, unmet requirements for these fuels.

My questions are (a) Why is there this discrepancy between the Energy Balance view and the Results view (module balance table)? (b) Is LEAP in fact, importing these fuels (even though the shortfall rule specifies otherwise)?
Many thanks for your time and help.

Regards
Sue

Charlie Heaps 3/31/2009
 

Like

3810 Views

>>> My questions are (a) Why is there this discrepancy between the Energy Balance view and the Results view (module balance table)? (b) Is LEAP in fact, importing these fuels (even though the shortfall rule specifies otherwise)?


Hi Sue,

I believe LEAP is working as intended here. The rules you set in each module only affect whether imports occur at the time that module is calculated. Thus you will not see any imports in the module balance. However, after all modules have been calculated LEAP does a final reckoning between requirements and resource availability. This is the resource calculations part of LEAP. If there are any secondary fuels for which requirements remain after all modules have been calculated then by default LEAP will import those requirements.

However, you can change this default behavior by selecting any of the secondary fuels in the tree under the Resources\Secondary branches. Next right-click a fuel, select "Properties" and choose between these 3 options:

* Imports meet any unmet requirements (the default)
* Any requirements remain unmet (choose this one)
* Iterate calculations: use upstream modules to meet any unmet requirements (this option is only needed if you have complex systems with feedback flows.

I hope this helps,

Charlie




> Hi there.
>
> I have a question about the difference between results data in the Energy Balance View versus the transformation module balance tables (in the Results View). Basically, I specified a shortfall rule for gasoline, kerosene, residual fuel oil and diesel to not import (ie requirements remain unmet).
>
> However, when I go to the Energy Balance view, it appears as though these fuels are being imported anyway, and that there is no unmet demand. But if I go to the Results view, and select Transformation -> Module balance, then that view indicates that the above fuels were not imported (ie the imports row is zero) and that there are, in fact, unmet requirements for these fuels.
>
> My questions are (a) Why is there this discrepancy between the Energy Balance view and the Results view (module balance table)? (b) Is LEAP in fact, importing these fuels (even though the shortfall rule specifies otherwise)?
> Many thanks for your time and help.
>
> Regards
> Sue
>