If the average output of the PV system in Problem 6.7 is (200 mathrm{~W}), the load is
Question:
If the average output of the PV system in Problem 6.7 is \(200 \mathrm{~W}\), the load is changed to run during the day, how much PV output energy is needed for the same load conditions? Assume that the battery bank is at \(100 \%\) charge and that input efficiency is equal to output efficiency.
Problem 6.7
A PV battery system has an end-to-end efficiency of \(77 \%\). The system is used to run an all-AC load that is run only at night. The charge controller efficiency is \(96 \%\) and the inverter efficiency is \(85 \%\). How much energy will need to be gathered by the PV array if the load is \(120 \mathrm{~W}\) running for \(4 \mathrm{~h}\) per night?
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