I am doing a case study on battery back up of a wind system with the following specification:
- System size: 10 kW which runs continuously for 5 hours per day.
- Battery type: lead acid
- Energy generated per day: 50,000 Wh
- Back-up days: 1
- Depth of discharge: 50%, so 50000 Wh/0.5 = 100,000 Wh
Battery de-rate factor based on temperature (NJ max. = 63°F)
De-rate factor = 1.04, so 100,000 Wh x 1.04 = 104,000 Wh
Battery voltage: 48 V.
104000 Wh/48 V = 2166 Ah.
The next size up is 2200 Ah.
Can some one help me verify my calculations and also how to calculate the charging time and discharging time for this battery?
Thanks any guidance is much appreciated