DK100
Member
- Joined
- Feb 18, 2018
- Messages
- 63
New build for the coming months. Not a powerwall its way to small for that, but a 1,5 2 kW powerbank for covering the house usage during the nights.
This project makes no economical sense so its for fun and learning. Im going to do it as cheap as possible, making things myselves and recycle stuff, af far as possible for me.
The houshold consists of two persons and standard modern appliances, such af TV w boks, fridge, freezer, ventilation, ligths, 3 tower PCs etc.
During the past years, Ive been weeding out power consumption as much as possible, and we are down to a yearly use of around 2.500 3.000 kWh. From that we can deduct about 500 kWh produced on two small PV arrays. So net use is about 2.000 2.500 kWh a year, which we buy from the grid.
Typical electricyty use is about 4 8 kWh a day lowest in summer, highest in the dark winter days here at 56 deg. North (Denmark)
Night time loads are 50 180 watt pr hour, depending on how many things are switched on, when we go to bed.
Current system
The two PV arrays are:
1: 6 x Kanaka K60, 60 watts thinfilm panels, facing SE, feeding a Solardin 600 gridtie inverter. This system was installed in 2007.
2. 3 x Schco 190 W monochrystaline panels facing SW feedning an other Solardin 600 grid tie inverter.
New system
I would like to introduce a 1,5 to 2 kW powerbank, charged by my solar, and then covering the night time power use. As it is today excess power from solar is fed to grid and we earn next to nothing for that. So want to store the energy in a batteribank, and use it at night.
For that purpose, I plan to buy a Victron Multi 800 24 V invertercharger.
This will be hooked up the the mains L1 before house fusebox on the inputside, and on the outputside to L3 after housefusebox (where the two solardin inverters are connected.
Powerbank wil be housed in an old PC tower cabinet, 7s 42p 18650 reclaimed cells. Voltmeters on each celle and whole bank.
BMS will be a cheap china model as the one Daromer tested.
In addition maybe (economy) a victron Venux GX.
Current status of the project are that Im collecting cells, and have aobout 60 more to test before starting building the 7 pack of the powerbank.
New system would be something like this:
This way, and can keep running my Solardin invertrers and only have to buy the Victron stuff.
This project makes no economical sense so its for fun and learning. Im going to do it as cheap as possible, making things myselves and recycle stuff, af far as possible for me.
The houshold consists of two persons and standard modern appliances, such af TV w boks, fridge, freezer, ventilation, ligths, 3 tower PCs etc.
During the past years, Ive been weeding out power consumption as much as possible, and we are down to a yearly use of around 2.500 3.000 kWh. From that we can deduct about 500 kWh produced on two small PV arrays. So net use is about 2.000 2.500 kWh a year, which we buy from the grid.
Typical electricyty use is about 4 8 kWh a day lowest in summer, highest in the dark winter days here at 56 deg. North (Denmark)
Night time loads are 50 180 watt pr hour, depending on how many things are switched on, when we go to bed.
Current system
The two PV arrays are:
1: 6 x Kanaka K60, 60 watts thinfilm panels, facing SE, feeding a Solardin 600 gridtie inverter. This system was installed in 2007.
2. 3 x Schco 190 W monochrystaline panels facing SW feedning an other Solardin 600 grid tie inverter.
New system
I would like to introduce a 1,5 to 2 kW powerbank, charged by my solar, and then covering the night time power use. As it is today excess power from solar is fed to grid and we earn next to nothing for that. So want to store the energy in a batteribank, and use it at night.
For that purpose, I plan to buy a Victron Multi 800 24 V invertercharger.
This will be hooked up the the mains L1 before house fusebox on the inputside, and on the outputside to L3 after housefusebox (where the two solardin inverters are connected.
Powerbank wil be housed in an old PC tower cabinet, 7s 42p 18650 reclaimed cells. Voltmeters on each celle and whole bank.
BMS will be a cheap china model as the one Daromer tested.
In addition maybe (economy) a victron Venux GX.
Current status of the project are that Im collecting cells, and have aobout 60 more to test before starting building the 7 pack of the powerbank.
New system would be something like this:
This way, and can keep running my Solardin invertrers and only have to buy the Victron stuff.
