Help with SOLAR electric system design...

 
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McGiever
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Post by McGiever » Fri. Apr. 12, 2019 12:27 pm

For Midnite Classic or Kid charge controllers used with solar, wind and mini-hydro.
They have sharp people for all aspects of things renewable


http://midniteftp.com/forum/index.php?board=15.0

Monitoring of Midnite stats via internet...

https://mymidnite2.com

 
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Sunny Boy
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Post by Sunny Boy » Fri. Apr. 12, 2019 1:05 pm

Dave 1234 wrote:
Fri. Apr. 12, 2019 8:42 am
Storage batteries are like the tide, easy-in, easy-out.

Starting batteries are like a gasoline fire, it happens fast, with lots of energy exausted in a short time.

Both a good for what they are made to do.

Dave
Only that short burst when starting..... for the vast majority of the battery's life time use, which is while the engine is running, it's easy in and easy out.

And I'm not recommending using auto batteries, even though many people have successfully done so. My point is the OP may want to look into ways that some multi-storage battery systems have solved the problems of how to be hooked up and charged.

Paul

 
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McGiever
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Coal Size/Type: PEA,NUT,STOVE /ANTHRACITE
Other Heating: Ground Source Heat Pump and some Solar

Post by McGiever » Fri. Apr. 12, 2019 1:15 pm

Sure, some alledged crafty person will claim he has/had success where nobody else had any, today it's called YouTube... haha
You'll never see any knowledgeable person in the industry recommend any battery that isn't designed and built for the rigors that *Dave1234* layed out...for pure economic reason, if nothing else...


 
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Sunny Boy
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Coal Size/Type: Nuts !
Other Heating: Oil &electric plenum furnace

Post by Sunny Boy » Fri. Apr. 12, 2019 2:33 pm

Not some "crafty person" on You Tube.

The very large live-aboard boating community that use electric kitchen appliances, electric hot water heaters, lights, radios, sat TV's, basically the same things as a house not hooked up to the grid.

Solar power use on boats has been around almost as long as it has been on land.

Or just ignore the possibility that the wheel your trying to invent has already been invented years ago.

Paul

 
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McGiever
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Coal Size/Type: PEA,NUT,STOVE /ANTHRACITE
Other Heating: Ground Source Heat Pump and some Solar

Post by McGiever » Fri. Apr. 12, 2019 5:33 pm

So, I get your point...
Long time in use mean it is stagnant, but can continue to work as it has.
Somebody was running a lot of generator as it is not practical to have that large of sq.ft. solar array or batterybank for their loads you speak of.
Critical Loads maybe, navigation, radios and radar but never cooking and water heating...I'll need much more proof of that ever happening...calling B.S. on ya. ;)

Bet nobody's using any starting batteries. :)

 
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Sunny Boy
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Other Heating: Oil &electric plenum furnace

Post by Sunny Boy » Fri. Apr. 12, 2019 6:03 pm

McGiever wrote:
Fri. Apr. 12, 2019 5:33 pm
So, I get your point...
Long time in use mean it is stagnant, but can continue to work as it has.
Somebody was running a lot of generator as it is not practical to have that large of sq.ft. solar array or batterybank for their loads you speak of.
Critical Loads maybe, navigation, radios and radar but never cooking and water heating...I'll need much more proof of that ever happening...calling B.S. on ya. ;)

Bet nobody's using any starting batteries. :)
Ok you found me out. I wrote all that just to get you to show everyone how your the expert on all things solar, and that countless thousands in the marine industry and community have been doing it wrong for many years.

And of course without checking you would know that they have not changed as technoligy has advanced because they are still using sails to get from point A to B,...

And never mind that, like my brother, who is an electrical engineer, the cruising boat community tends to have a much higher average of owners with engineering degrees than the general population.

BTW you'd lose that bet, but I don't take advantage of sucker bets. ;)

So, I'll bow (out) to your obvious great depth of knowledge. :yes:

Paul


 
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McGiever
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Hand Fed Coal Stove: Warm Morning 414A
Coal Size/Type: PEA,NUT,STOVE /ANTHRACITE
Other Heating: Ground Source Heat Pump and some Solar

Post by McGiever » Fri. Apr. 12, 2019 6:27 pm

I'll bow out too.
But you've not convinced me of anything other than engineer people own boats.

 
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VigIIPeaBurner
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Post by VigIIPeaBurner » Fri. Apr. 12, 2019 7:01 pm

Marine applications need a hybrid design: CCA & storage. Hybrid bats store amps just fine but not for as many recharge cycles as bat designed for say a golf cart. Neither are designed for deep discharge SOC. Storage batteries have thicker plates and bigger inter plate spacing. In the physical design that where the chemical electron exchange occurs. Fast or slow, huge proton dump or long duration dump. An analogy is a low compression ICE hit and miss long stroke engine with a large heavy fly wheel or a small displacement higher compression short stroke engine running at high rpms.

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