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G.H2 Production

In Excel

LH2 Storage in Excel

This process can only be find on the Hydrogen spreadsheet, cell B62. This process defines a Share of feedstock input as feed( the rest as process fuel) value. We are going to handle this in a different way in the .net version but which is equivalent. Basically instead of having a part of the process fuel in Natural Gas and another part in Natural Gas : Feed loss as it is done in GREET Excel 1.8d.0, we are going to introduce a chemical reaction technology. The remaining NG which is coming from the feed and used as a process fuel will go through that Chemical Reaction Process, will produce 0 emissions, but will be accounted as a energy consumption.

In .net

Assumptions

LH2 Production

We are trying to calculate some shares for the NG actually burned, and the NG lost in the chemical reaction.

The formula : $NG=10^{6}\cdot ({\frac {1}{eff}}-1)\cdot Share_{NG}$ is usually giving us the amount of NG process fuel used, here in that case a part of it will be used within the process without any combustion.

In Excel, the amount of process fuel is given by : $NG_{pf}=({\frac {10^{6}}{eff}}-(10^{6}({\frac {1}{eff}}-1)\cdot Share_{Electricity}))\cdot (1-FeedAsProcessFuel)$

And the amount of fuel used as feed is given by : $NG_{feed}=({\frac {10^{6}}{eff}}-(10^{6}({\frac {1}{eff}}-1)\cdot Share_{Electricity}))\cdot FeedAsProcessFuel)-10^{6}$

The total NG used by this process is given by : $NG=NG_{pf}+NG_{feed}\,$, now the technologies will be assigned to the total NG

• $Share_{BoilerTechnology}=0.17\,$
• $Share_{SMRTechnology}=0.83\,$

In GREET now

LH2 Storage in .net rev 3328