## Abbreviations  
* CA \(\text{CO}_{2}\) Avoided CC \(\text{CO}_{2}\) Captured CCS \(\text{Carbon Capture and Storage}\) Ch \(\text{Chargeable}\) CLC \(\text{Chemical}\) Looping Combustion CLR \(\text{Chemical}\) Looping Reforming CSTR \(\text{Continuous}\) Stirred Tank Reactor FTR \(\text{Fired}\) Tubular Reformer COT \(\text{Combustor}\) Outlet Temperature GHG \(\text{Greenhouse}\) Gases GSPOX Gas Switching Partial Oxidation GS \(\text{Gas}\) Switching GSR \(\text{Gas}\) Switching Reforming  
\begin{tabular}{l l} GT & Gas Turbine \\ HTS & High Temperature Shift \\ IEA & International Energy Agency \\ IPCC & Intergovernmental Panel on Climate Change \\ LHV & Lower Heating Value \\ LP & Low Pressure \\ LT & Low Temperature \\ LTS & Low Temperature Shift \\ MDEA & Methyl-Diethanolamine \\ MEA & Methyl-Ethanolamine \\ nCh & Non-chargeable \\ NG & Natural Gas \\ NGCC & Natural Gas Combined Cycle \\ POX & Partial Oxidation \\ PSA & Pressure Swing Adsorption \\ RED & Reduction \\ REF & Reforming \\ TIT & Turbine Inlet Temperature \\ TOT & Turbine Outlet Temperature \\ SMR & Steam Methane Reforming \\ SPECTCA & Specific Primary Energy Consumption for CO\({}_{2}\) Avoided. \\ S/C & Steam to Carbon \\ WGS & Water Gas Shift \\ WS & Water Splitting \\ Symbols & Cooling constant \\ \(c_{p}\) & Specific heat capacity (J/mol\(\cdot\)K) \\ \(h\) & Specific enthalpy (J/mol) \\ \(n\) & Total moles (mol) \\ \(F\) & Total flow (mol/s) \\ \(K\) & Equilibrium constant (-) \\ k & Pressure drop constant (-) \\ \(P\) & Pressure (bar) \\ \(p\) & Partial pressure (bar) \\ \(r\) & Species reaction rate (mol/s) \\ \(R\) & Gas Constant (J/molK) \\ \(R_{H_{2}}\) & Hydrogen recovery (\%) \\ \(s\) & Selectivity (\%) \\ \(t\) & Time (s) \\ \(T\) & Temperature (K) \\ \(y\) & Molar fraction in gas (-) \\ \(\xi\) & Global reaction rate (mol/s) \\ \(\varphi\) & Coolant-got gas mass flow fraction \\ \(\Delta H_{r,T}\) & Enthalpy of reaction (kJ/mol) \\ Subscripts and Superscripts \\ \(k\) & Component \\ \(i\) & Stream \\ \(r\) & Reaction/Rotor \\ \(\circ\) & Ambient/reference conditions \\ - & Averaged value \\ \(s\) & Stator \\ \(g\) & Gas \\ \(bl\) & Blade \\ _des_ & Desorption \\ _ads_ & Adsorption \\ \end{tabular}  
\(P_{ads}\) is the inlets syngas pressure in a bar at which adsorption of non-H\({}_{2}\) components takes place.  
\(P_{ads}\) is the regeneration bed desorption pressure in a bar of the PSA off-gas.  
2. Gas Turbine units:  
Stator (s) and Rotor (r) coolant flow fraction calculation:  
\[\frac{\dot{m}_{s}\overline{c}_{p,s}}{\overline{m}_{g}\overline{c}_{p,g}}=b_{s} \frac{\left(T_{g,i}-T_{bl,s}\right)}{\left(T_{bl,s}-T_{s,i}\right)} \tag{2}\]  
\[\frac{\dot{m}_{r}\overline{c}_{p,r}}{\overline{m}_{g}\overline{c}_{p,g}}=b_{r} \frac{\left(T_{g,i}-T_{bl,r}\right)}{\left(T_{bl,r}-T_{r,i}\right)}. \tag{3}\]  
Pressure drop for coolant and hot gas path mixing flows:  
\[\frac{\Delta p}{p}=k\varphi. \tag{4}\]  
\begin{table}
\begin{tabular}{c c c c c c c} \hline
**Product** & \multicolumn{3}{c}{**H2 and Steam**} & \multicolumn{3}{c}{**H2 and Power**} \\ \hline  & \multicolumn{3}{c}{Emissions Performance} & \\ \hline E\({}_{\rm CO2}\) (g/M) & 74.18 & 9.90 & 2.19 & 1.83 & 3.94 & 4.41 \\ E\({}_{\rm CO2}\) (g/M) & 71.06 & 12.14 & 7.12 & 6.57 & \(-\)28.87 & \(-\)27.95 \\ E\({}_{\rm CO2}\) (g/M) & 74.14 & 12.14 & 7.58 & 7.38 & \(-\)28.87 & \(-\)27.95 \\ CC (\%) & 0.00 & 87.57 & 96.74 & 97.51 & 97.62 & 96.51 \\ CA (\%) & - & 85.06 & 89.86 & 90.80 & 140.50 & 140.36 \\ CA (\%) & - & 85.06 & 89.28 & 89.75 & 140.50 & 140.36 \\ SPECTA (M/kg) & - & 2.28 & \(-\)0.37 & \(-\)0.51 & 0.76 & 0.15 \\ SPECTA (M/kg) & - & 1.29 & \(-\)1.05 & \(-\)1.09 & 0.21 & \(-\)0.39 \\ \hline \end{tabular}
\end{table}
Table 6: _Couf._