Fig. 1 Concept architecture More about this image found in Concept architecture

Fig. 2 Illustrative time history of NO concentration before and after the addition of staged air to show the terms in Eq. (3) . Using a poorly relaxed case for exaggerated production/destruction terms. Dashed lines indicate equilibrium concentrations in the rich and lean zones. ( ϕ rich ... More about this image found in Illustrative time history of NO concentration before and after the addition...

Fig. 3 Bars representing sources (starting from bottom:  lean pre-flame destruction (negative, purple), lean in-flame (dark purple); lean post-flame (light purple); rich equilibrium (orange); and rich unrelaxed (green)) that contribute to net NO x emissions (ng/J) (black dots) for T inlet  = 80... More about this image found in Bars representing sources (starting from bottom:  lean pre-flame destructio...

Fig. 4 Effects of   ϕ rich   and   τ relax   on exit NO x (contour field) and rich-relaxation NO x (contour lines) at T inlet  = 800 K, T exit  = 2000 K, and P  = 20 atm for ( a ) CH 4 and ( b ) 50% CH 4 , 50% H 2 (by vol.) More about this image found in Effects of   ϕ rich   and   τ relax   on exit...

Fig. 5 Effects of   ϕ rich   and   τ relax   on exit NO x (contour field) and rich-relaxation NO x (contour lines) at T inlet  = 800 K, T exit  = 2000 K, and P  = 20 atm for ( a ) NH 3 and ( b ) 50% NH 3 , 50% H 2 (by vol.) More about this image found in Effects of   ϕ rich   and   τ relax   on exit...

Fig. 6 Isolines of   τ global   where NRRL and LPM systems produce equal NO x emissions at T inlet  = 800 K for CH 4 blended with 0% (solid), 25% (long dash), 50% (short dash), and 75% (dotted) H 2 (by vol.) More about this image found in Isolines of   τ global   where NRRL and LPM systems produce ...

Fig. 7 Reaction pathways at peak d[NO]/dt in the lean zone of an NRRL combustor at T inlet  = 800 K, T exit  = 2000 K, P  = 20 atm, and   τ relax   = 25 ms at   ϕ rich   = 1.5 for ( a ) CH 4 and ( b ) NH 3 More about this image found in Reaction pathways at peak d[NO]/dt in the lean zone of an NRRL combustor at...

Fig. 8 Time histories (solid) and equilibrium values (dashed) of selected species in the lean zone for CH 4 after a   τ relax   = 10 ms with T inlet  = 800 K, P  = 20 atm, and T exit  = 2000 K for ( a )   ϕ rich   = 2 and ( b )   ϕ rich   = 1.5 More about this image found in Time histories (solid) and equilibrium values (dashed) of selected species ...

Fig. 9 Reaction diagrams for P  = 20 atm, T inlet  = 800 K, T exit  = 2000 K, and τ relax  = 10 ms at   ϕ rich   = 2, for ( a ) end of the relaxation zone, ( b ) before the lean flame, and ( c ) after the lean flame showing the importance of HCN and therefore NH 2... More about this image found in Reaction diagrams for P  = 20 atm, T inlet  = 800 K, T exit  = 2000 K,...

Fig. 1 POWDER2POWER plant scheme adopting a recompressed sCO 2 power block More about this image found in POWDER2POWER plant scheme adopting a recompressed sCO 2 power block

Fig. 2 Flowchart of the methodology employed to design the overall P2P plant More about this image found in Flowchart of the methodology employed to design the overall P2P plant

Fig. 3 Fluidized particles cavity receiver geometry More about this image found in Fluidized particles cavity receiver geometry

Fig. 5 Solar field layout and optical efficiency at design conditions More about this image found in Solar field layout and optical efficiency at design conditions

Fig. 6 Receiver heat flux map at design conditions More about this image found in Receiver heat flux map at design conditions

Fig. 7 Receiver efficiency as function of the HTF inlet and outlet temperatures More about this image found in Receiver efficiency as function of the HTF inlet and outlet temperatures

Fig. 8 Cycle efficiency of the different sCO 2 -based power blocks as function of the PHE (BHE for the RCCB) inlet and PHE outlet temperature. The solid lines for the RCCB configuration indicate the CO 2 PHE inlet temperature. ( a ) RCC, ( b ) RCCB, ( c ) RCIC, and ( d ) PCC. More about this image found in Cycle efficiency of the different sCO 2 -based power blocks as function of ...