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A new solar system
http://www.backyardaquaponics.com/forum/viewtopic.php?f=51&t=13060
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Author:  earthbound [ Jul 1st, '12, 12:59 ]
Post subject:  A new solar system

We tried once before to run a trial of a solar system but we had a fair few issues with it and it spent most of it's time running on 240V plugged into the power.

But not to be deterred because we are asked constantly here at the shop "what about solar?" So we are setting up another system on solar, only this time we are running 12V DC all the way.

Last time we used an inverter to convert back to 240V, but it wasn't so successful. This time hopefully we will be a little better prepared.

We have a solar panel thats twice as big as the last one, 130W, we have a 100AH battery and all these other bits including a 12V timer and German made DC pump.

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Author:  Charlie [ Jul 1st, '12, 13:07 ]
Post subject:  Re: A new solar system

looking forward to it guys

Author:  earthbound [ Jul 1st, '12, 13:18 ]
Post subject:  Re: A new solar system

Still a bit we have to figure out as yet, the timer can have 8 cycles per 24 hours and there's been an allowance in the sizing of the panel and battery that the pump will run for 12 hours a day.. Going to have to do some juggling....

Got to work out how the digital timer works first.

Author:  chillidude [ Jul 1st, '12, 20:09 ]
Post subject:  Re: A new solar system

earthbound wrote:
Got to work out how the digital timer works first.

Your VCR must have really driven you mad then ......

Author:  helomech [ Jul 1st, '12, 20:10 ]
Post subject:  Re: A new solar system

My 12 volt pump and battery have been going for about 4 months now. Hoping to add some solar panels soon, right now the battery is being charged with a battery charger.

Author:  Privatteer [ Jul 1st, '12, 20:42 ]
Post subject:  Re: A new solar system

Are you putting in a regulator so you don't overcharge/flatten the battery too much and kill it early?
Even the cheap ebay jobs do the trick. Just sometimes you need to run the load via a relay direct to battery. Then have the relay controlled by the regulator load output.
Depends on the amp draw of the pump and what the regulator is rated to switch.

Author:  helomech [ Jul 1st, '12, 20:58 ]
Post subject:  Re: A new solar system

Privatteer wrote:
Are you putting in a regulator so you don't overcharge/flatten the battery too much and kill it early?
Even the cheap ebay jobs do the trick. Just sometimes you need to run the load via a relay direct to battery. Then have the relay controlled by the regulator load output.
Depends on the amp draw of the pump and what the regulator is rated to switch.



I have this charger, it does everything on it's own. And will do 3 battery banks.

http://www.ebay.com/itm/XANTREX-TRUECHA ... ar&vxp=mtr

Author:  Freebz [ Jul 1st, '12, 21:12 ]
Post subject:  Re: A new solar system

was thinking about hooking up a submersable bilge pump to mine when i recently expanded because i have a solar 12v setup powering my workshop, i think in the end it came down to not being able to find a timer i liked and not really feeling like making one either.

Author:  Charlie [ Jul 1st, '12, 21:14 ]
Post subject:  Re: A new solar system

Cant say Ive heard too many success stories with 12V bilge pumps, they dont last long. I wouldnt trust them for a sole pumping source.

Author:  Freebz [ Jul 1st, '12, 21:23 ]
Post subject:  Re: A new solar system

yeah but when you service them at work parts are cheap and they seem to handle dirty stuff alright

Author:  RupertofOZ [ Jul 1st, '12, 21:28 ]
Post subject:  Re: A new solar system

Freebz wrote:
and they seem to handle dirty stuff alright

For short periods of time.... :wink:

Author:  Charlie [ Jul 1st, '12, 21:30 ]
Post subject:  Re: A new solar system

If you can get parts for free go for it :thumbleft:

A friend of mine tried bilge pumps for a while but they just burnt out time after time... I think it was 4-5 in the space of 6 months. Possibly good quality ones will last a while but the point remains that I like to live in comfort that my main pump is good for a couple of years at the least.

My first pump was a dodgey looking pond pump from B... it lasted 20 months and it was only $60. But this is what they are designed for... unlike bilge pumps which are short term.


Its mostly about piece of mind. :thumbright:

Author:  earthbound [ Jul 1st, '12, 21:33 ]
Post subject:  Re: A new solar system

We got a Oase Aquarius Solar 1500 pump, made in Germany, cost $399 and only pumps 1500l/h, so should be good I hope..

Yep, got a charging regulator.. I basically went into the 12 volt shop and said "I want to do this, give me everything I need, no cutting corners I want to do it properly..." Gave the man $1500 bucks and walked out with everthing I need to run the system.. I hope... :)

He has had lots of people asking about aquaponic systems and setting them up on solar..

Author:  Freebz [ Jul 1st, '12, 21:41 ]
Post subject:  Re: A new solar system

i see your point, might give it a go when this pump dies or fit an external pump (whichever i like the idea of better at the time) if i can find a timer i like then.

Anyway it will be good to see how it goes and if you need a hand with any of the 12v side just ask.

Author:  RupertofOZ [ Jul 1st, '12, 22:00 ]
Post subject:  Re: A new solar system

earthbound wrote:
I basically went into the 12 volt shop and said "I want to do this, give me everything I need, no cutting corners I want to do it properly..." Gave the man $1500 bucks and walked out with everthing I need to run the system.. I hope... :)

How's that compare to your first solar trial Joel... price wise...

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