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Feedstock accounting for Industry sub-sectors
#1
Dear Gary,

Many thanks again for the VEDA-TIMES Starter, it is really a big help when newcomers want to build a whole energy system model.

I would have a question in regards to the feedstock accounting for industry in the Starter model and in general. I can see that there is no non-energy use consumption in the Starter energy balance (EB_Starter-VT -> Energy balance sheet /row62/), but in the industry BY excel sheet some energy consumption have been allocated for feedstock (e.g. in case of iron and steel, NMM, food&tobacco etc). 

Since we are building up a model for Hungary, I have used Eurostat database to get the energy balance for our base year. In its metadata description it is stated that those final energy consumptions enlisted under 'non-energy use' accounts for "Energy products used as raw materials in the different sectors; that is not consumed as a fuel or transformed into another fuel". Which is the definition of feedstock.

I think Starter is using some of the final energy consumption for industry as a feedstock to define a simple, still powerful way to describe the operation of these different sub-sectors. 

Therefore my question would be if our way to describe the feedstock for industry sector by getting the data from 'non-energy use in industry' (in case it is available) is correct? Therefore those energy consumptions listed in 'Industry' are more for process heat, machine drive and for facility/other demands?

Thank you very much for your help in advance.

Best regards,
Viktor
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#2
FWIW, I think you are right:  The final non-energy use in the energy balances (e.g. IEA) include the use of fuels as feedstocks, and the final energy use of fuels means using the fuels by combusting or other means of oxidation to produce space heat, process heat and process steam as well as engine power for motors in industry and other sectors. I think that in those energy uses the carbon contained in the fuel can be assumed more or less fully getting converted into CO2. However, in feedstock use the carbon is in some cases stored in the product, but is in some cases converted into CO2 in the production process (e.g. ammonia production) or some time later (e.g lubricant degradation).
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