On the Performance of Hybrid PV/Unitized Regenerative Fuel Cell System in the Tropics

Table 3

Summary of the selected day measured and simulation results.

System	Simulated	Measured
Solar input	4.08	4.08	kWh/m^2
PV output	0.83	0.78	kWh
PV efficiency^a	10.3	9.7	%
User load	0.37	0.37	kWh
PV to load^b	28.85	31.43	%
Load powered by PV^c	65.26	66.94	%
FCM power	0.13	0.12	kWh
FCM operating hours	7	7	hr
Total H2 consumed^d	0.25	0.27	kWh
FCM energy efficiency^e	50.1	45.35	%
ELM power	0.46	0.51	kWh
ELM operating hours	9	9	hr
Total H2 produced	0.39	0.35	kWh
ELM energy efficiency^f	84.48	68.98	%
Total system Efficiency^g	4.55	4.55	%
Round trip efficiency^h	42.31	31.28	%

^aPV output to the solar input.
^b(Load − Fuel cell mode power)/PV output.
^c(Load − Fuel cell mode power)/load.
^dBased on HHV for hydrogen.
^eFuel cell mode power to the hydrogen consumed.
^fHydrogen produced to the electrolyzer mode power.
^gLoad to the solar input.
^hFuel cell mode efficiency and electrolyzer mode efficiency.