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Old 09-02-19, 12:21 PM   #161
randen
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September is upon us. Here in southwestern Ontario Canada fall is approaching fast. The additional panels were of great improvement especially for after 5:00 pm

This summer the mighty Geothermal heat-pump air conditioner was flexing its muscles using solar produced electricity. The addition of 3.5 kw helped with a state of charge that would have us cruise through the night in total comfort. If the morning greeted us with sunshine we are set for another day. However if the morning sun was a little shy we had to make the switch to grid for an hour or two until it was bright enough to gain us some electrons.

All in all many days would pass and the off grid smile was still present.

Today holiday Monday we sill have the switch off grid Charging the car, air-conditioning and washing clothes with fridges and coffee pot in operation

Additional batteries and a little wind are on the list as well as a little larger low pass filter for the inverter. During high energy uses it gets a little warmer than Id like but no smoke.

Its a win

Randen

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Old 09-08-19, 10:32 PM   #162
ThomSjay
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Randen, I'm impressed that you made your own inverter! I would love to come by sometime for a peek at your systems since it is very encouraging what you have done.

About 3 1/2 years ago I had to pick up my son at someones place near Saranac, MI. For some reason, I went into the garage/shed and saw a huge board, about 4' x 6' full of light bulb bases. I asked if they were trying to provide a load on something, and was told that this gentleman's friend had designed (on kitchen napkins) and built an inverter that was 10K(?) watt. I was duly impressed! I never got back to that place, sadly enough, so, I don't know if there was more progress or anymore details.
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Old 09-10-19, 06:07 PM   #163
randen
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Today a bit of an interesting event. But first a little history. Yesterday mostly sunny and a full pack at 7:00pm. Dinner was cooked on our electric stove top and a meatloaf in the oven again electric. A load of wash took place after followed by a half hour of tumble drying. I had mentioned to my significant other that we probably would not have enough power to dry the load completely. So she put the clothes on the drying rack to finish drying.

I have to encourage her to embrace the new solar power system to change habit and do high energy tasks during noon time. She has the habit of doing these tasks off peak with time of use grid costs.

Last night was uneventful and we coasted though the night off grid. The morning light (thin overcast) started the charge as usual we cooked breakfast and had showers all those menial morning tasks. At 10:30am the car is scheduled to start charging and thats when the clouds rolled in. About noon we had exceeded the batteries capacity and the system shut down.

No real problem the car has lots of charge, so stop the charge and the house battery recovered in 1/2 hr and we resumed the off grid life style.

As of about 6:00pm we have a full charge to do it all again.

High energy demands and irradiance conditions still can complicate things. But it sure beats a power bill!!!

I can see where a huge 85kwh battery would be nice!!!

Randen

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