Fig. 6

Predicted effect of R_f and L_f on NIFTE performance using the NTP-TL model. A unique, stable cyclic steady state is detected here. The effect on both the exegetic efficiency η_ex (left plots) and the average power output \(\dot {W}_{\mathrm {l}}\) (right plots) is shown for each cyclic steady state. \(R_{\mathrm {f}}^{+}\) and \(L_{\mathrm {f}}^{+}\) refer to R_f and L_f normalized by their respective nominal values in Table 2. The remaining parameters are set to their nominal values. All of the limit cycles are stable on both plots