Posts: 1
Threads: 1
Joined: Jan 2011
Hi,
We've been looking at a coal power plant with a capture process (specifically called EZOCOA110). We can't really figure out what the attribute FLO_EMIS, with the connected commodity SNKELCCO2 represents. Is it the amount of CO2 captured, or the share that is captured versus emitted? How is it calculated? What are the units? We wonder, because it doesn't change through time, but the efficiency of the power plant tech does.
Any help would be greatly appreciated! Thanks!
Jay
Posts: 1,747
Threads: 21
Joined: Jun 2010
Are you on the right Forum? This sub-forum deals with the VEDA-FE Front End for TIMES modeling.
But anyways, usually the carbon capture efficiency is assumed to remain constant, and therefore the amount of CO2 captured per one unit of input fuel energy can be conveniently represented by a FLO_EMIS parameter on the input fuel. The parameter value would thus, indeed, be constant over time, even if the energy conversion efficiency of the power plant changes over time. Of course, you could also define the parameter on the activity, but in that case you should embed the changing conversion efficiency into the parameter value, which I consider undesirable. But it is all up to you to choose. In the case of CO2, the unit of the FLO_EMIS parameter would be mass units of the emission per energy units of the source flow or activity, whatever those are in your model.
