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UPS charging itself?

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ashrod33
(@ashrod33)
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Joined: 9 months ago
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This is Ashley from Goa, suffering frequent power cuts and wanting to redesign my home on 12 or 24 volts, using peltier and other systems to be self sufficient.

Thank you for sharing your incredibly helpful knowledge.

May I ask you a specific question?
Why is it not possible to have a 12 volt DC battery feeding into an inverter card to produce 220 volts AC (normal UPS function) and then feed the 220 volts AC back into a transformer or buck converter to charge the same battery in the same UPS?

Please guide me, thanks.

Cheers,
Ashley

 


   
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Ron
 Ron
(@zander)
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@ashrod33 That would be 'perpetual motion' and is impossible.

What I and many have is a battery bank feeding an inverter but to charge the batteries I use solar for a few months a year but mostly I plug into shore power, in my country 110VAC. If away from shore power for a certain amount of time if there isn't enough solar which at 49 degrees Lat is about 6 months of the year or more. My Victron inverter has a 120A charger for my 600AH LiFePO4 battery bank. The inverter is a 3,000W size and weighs about 40 lbs.

"Don't tell people how to do things. Tell them what to do and let them surprise you with their results.” - G.S. Patton, Gen. USA
"Never wrestle with a pig....the pig loves it and you end up covered in mud..." anon


   
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Ron
 Ron
(@zander)
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I forgot to mention, peltier cooling in my experience is only usable for fairly small devices like cameras. My guess is it takes a fair bit of power to do even that so a house that is measured in tons of cooling is likely not possible You might have better luck looking into 'swamp cooler' and misting technology as used in the US South West they do not use compressors so are much more energy efficient. If on a well also look into 12V/24V DC water pumps. Use a small one on a solar setup and pump all day to a raised container so gravity feed works at night.

"Don't tell people how to do things. Tell them what to do and let them surprise you with their results.” - G.S. Patton, Gen. USA
"Never wrestle with a pig....the pig loves it and you end up covered in mud..." anon


   
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Foxy
 Foxy
(@foxy)
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Posts: 58
 

Re "perpetual motion"   This idea has been kicking around for so many years that it is now correctly dismissed as "impossible" without much reference to why it is impossible.  What it boils down to is that any time you change energy from one form to another (solar to electrical, electrical to chemical, chemical to electrical, electrical to mechanical, etc, etc, etc) there is a loss in which a bit of the energy is turned into heat.  The net result is that no matter what you do you eventually end up with it all turned to heat.   


   
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Ron
 Ron
(@zander)
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@foxy And yet I still see YT videos claiming to have 'free power' machine designs. I bet there are still a lot of fools who buy it, same ones refusing masks and/or vaccines. There is a common thread, called IQ.

"Don't tell people how to do things. Tell them what to do and let them surprise you with their results.” - G.S. Patton, Gen. USA
"Never wrestle with a pig....the pig loves it and you end up covered in mud..." anon


   
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