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The Outhouse Powerwall
#37
Just a quick winter update.

The Outhouse survived it's first sub-zero temps! Over this week it's been in the 0-10F (-17C to -10C) and the wind-chill was way below in the -5F and the Outhouse managed to stay warm the entire time.

From the graphs you see the mini spikes where the controller would kick in to power my small 200W ceramic heater. The one mistake was over the summer I bought a temp controller that could handle both cooling and heating, cooling to turn on the fan and heating to turn on the heater. It just couldn't handle the wide range so I ended up buying another temp controller just for heating.



The 200W heater did its job and maintained my batteries above 42F with plenty of room to spare if it needs to go below 0F.

My mini-split also worked well and it replaced my electric baseboard heating. I still need to wait until the entire winter is over to calculate the winter savings but safe to say it's cut my electric bill in half. I would have used 1000kwh easily and I've only used 300kwh for January's electric bill!

The eSmart3 solar charge controller has been working great as well. The one thing I noticed was that when I had 3x245w panels in series, it only output about 450w. I know my panels are used (80-90%) and not pointed in the right angle, but it seemed less efficient compared to my PIP. Reading the book it recommended to have them 2 in series for 24V setups. So I added another panel and switched to a 2 parallel x 2 series I got about 720W.

3*245w=735w.  Actual was 450w max. 61% efficient.
2*245w + 2*245w = 980w. Actual was 720W max. 73% efficient.

It's possible that for 24V it's better to have it configured in 2S instead of 3S. My panels are roughly 32Vmp so maybe the eSmart3 MPPT worked better in the 64V range than in the 96V range.

One big issue I have right now is that my PIP2424LV doesn't seem to want to switch from Grid to Battery when under heavy load. I'm talking about 800W when the mini-split is running. Once it drops below 500W it will then flip to grid. But on some cold days the mini-split will not take a break and I come home to see the battery 100% charged yet I'm still on utility. I then turn off the mini-split and the PIP immediately switches back to Battery mode. Not sure why that's happening!

Other than that, I just finished testing another 7S60P pack and just needs the busbars and ready to install! Should happen in the next two weeks!
 



Big Grin
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Messages In This Thread
The Outhouse Powerwall - by not2bme - 12-26-2017, 05:20 AM
RE: The Outhouse Powerwall - by wim - 12-26-2017, 07:49 AM
RE: The Outhouse Powerwall - by Stefaan De Ridder - 12-26-2017, 09:03 AM
RE: The Outhouse Powerwall - by Korishan - 12-26-2017, 01:43 PM
RE: The Outhouse Powerwall - by not2bme - 12-26-2017, 02:13 PM
RE: The Outhouse Powerwall - by Wattsup - 12-26-2017, 08:04 PM
RE: The Outhouse Powerwall - by wim - 12-26-2017, 08:09 PM
RE: The Outhouse Powerwall - by not2bme - 01-07-2018, 10:25 PM
RE: The Outhouse Powerwall - by not2bme - 01-20-2018, 04:29 AM
RE: The Outhouse Powerwall - by not2bme - 08-01-2018, 02:57 AM
RE: The Outhouse Powerwall - by rodagaster - 08-01-2018, 08:29 AM
RE: The Outhouse Powerwall - by not2bme - 08-01-2018, 02:13 PM
RE: The Outhouse Powerwall - by Walde - 08-01-2018, 08:18 PM
RE: The Outhouse Powerwall - by not2bme - 08-02-2018, 01:05 AM
RE: The Outhouse Powerwall - by not2bme - 08-11-2018, 08:56 PM
RE: The Outhouse Powerwall - by jesusangel - 08-12-2018, 06:25 AM
RE: The Outhouse Powerwall - by not2bme - 08-12-2018, 11:22 AM
RE: The Outhouse Powerwall - by jesusangel - 08-12-2018, 11:44 AM
RE: The Outhouse Powerwall - by Redpacket - 08-12-2018, 01:36 AM
RE: The Outhouse Powerwall - by Korishan - 08-12-2018, 12:11 PM
RE: The Outhouse Powerwall - by not2bme - 08-12-2018, 03:24 PM
RE: The Outhouse Powerwall - by Korishan - 08-12-2018, 04:38 PM
RE: The Outhouse Powerwall - by not2bme - 08-19-2018, 07:47 PM
RE: The Outhouse Powerwall - by not2bme - 09-04-2018, 11:24 PM
RE: The Outhouse Powerwall - by jdeadman - 09-05-2018, 12:26 AM
RE: The Outhouse Powerwall - by not2bme - 09-05-2018, 02:21 PM
RE: The Outhouse Powerwall - by jdeadman - 09-05-2018, 03:18 PM
RE: The Outhouse Powerwall - by hbpowerwall - 09-06-2018, 03:15 AM
RE: The Outhouse Powerwall - by not2bme - 09-06-2018, 11:26 PM
RE: The Outhouse Powerwall - by hbpowerwall - 09-07-2018, 02:22 AM
RE: The Outhouse Powerwall - by not2bme - 10-08-2018, 05:45 PM
RE: The Outhouse Powerwall - by not2bme - 10-12-2018, 11:28 PM
RE: The Outhouse Powerwall - by Haslero - 10-13-2018, 12:38 PM
RE: The Outhouse Powerwall - by pflicht - 10-20-2018, 03:36 AM
RE: The Outhouse Powerwall - by not2bme - 10-25-2018, 11:10 PM
RE: The Outhouse Powerwall - by not2bme - 11-11-2018, 09:22 PM
RE: The Outhouse Powerwall - by not2bme - 02-02-2019, 10:01 PM
RE: The Outhouse Powerwall - by mike - 02-03-2019, 06:28 PM
RE: The Outhouse Powerwall - by not2bme - 02-04-2019, 09:25 PM
RE: The Outhouse Powerwall - by not2bme - 03-01-2019, 12:16 AM
RE: The Outhouse Powerwall - by kanchana - 04-17-2019, 04:12 PM
RE: The Outhouse Powerwall - by not2bme - 04-18-2019, 01:25 AM
RE: The Outhouse Powerwall - by kanchana - 04-20-2019, 02:15 AM
RE: The Outhouse Powerwall - by not2bme - 04-30-2019, 02:37 AM
RE: The Outhouse Powerwall - by not2bme - 05-06-2019, 04:01 AM

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