I have the option of running a 70 watt air pump for sewage treatment during the day (taking advantage of the solar panels) or during the night (drawing from the 48 v battery bank).
Which is more efficient?
I have the option of running a 70 watt air pump for sewage treatment during the day (taking advantage of the solar panels) or during the night (drawing from the 48 v battery bank).
Which is more efficient?
Mate, any time you can run your loads directly from the PV input, you are much better off than using batteries.
Daytime. I have my water pump set to run noon - 4pm Usually, by noon, the batteries are well into absorb, and I have power to spare.
Nighttime loads require about 30% more harvest than daytime loads, for the extra system losses (20% battery recharge, battery wear, longer time till end of absorb)
Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
Comment