PV*SOL Expert 6.0 - Manual - Valentin Software

4.8 Design Recommendation
For stand-alone systems in the quick design (for new projects only), PV*SOL calculates a
design recommendation based on the Climate data record, the Inclination and
Orientation of the modules, and on the Consumption. The result of this design
recommendation is the output of the PV modules and the battery capacity.
For the design, PV*SOL requires the energy requirement and the irradiation on one design
day. PV*SOL calculates these values from the given climate data record and the
consumption of the selected Design month.
The battery is designed so that the energy requirement over the given Period of autonomy
can be met entirely from the battery without it being charged.
The PV array is sized so that the number of batteries calculated above are completely
charged from the lower discharge threshold within the given System recovery period. The
energy requirement and the battery losses must be also be met within this period. In
addition to the module orientation, whether or not an MPP tracker is available is also part
of the array sizing. Without MPP tracking, it is possible that a 50W module supplies
considerably less output at 100W irradiation.
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