Jhonas
New Member
Here is a fun problem:
You are to design a system for a year-round site at 40oN
latitude. This system powers an instrumentation system and
a directional radio transmitter. The expected minimum
horizontal global irradiance is 4.0 kWh/m2/day in June and
1.5 kWh/m2/day in December. Ambient low/high temperatures
are 10oC/30oC in June and -25oC/-10oC in December. The
load's daily energy requirement is 0.5 kWh/day in December
and 1.0 kWh/day in June. The PV array will be rack-mounted.
1.) If 99% availability is desired, what should DOA be?
You are to design a system for a year-round site at 40oN
latitude. This system powers an instrumentation system and
a directional radio transmitter. The expected minimum
horizontal global irradiance is 4.0 kWh/m2/day in June and
1.5 kWh/m2/day in December. Ambient low/high temperatures
are 10oC/30oC in June and -25oC/-10oC in December. The
load's daily energy requirement is 0.5 kWh/day in December
and 1.0 kWh/day in June. The PV array will be rack-mounted.
1.) If 99% availability is desired, what should DOA be?