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AkamaruRules
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# Posted: 13 Feb 2022 18:45 - Edited by: AkamaruRules
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Stringing multiple small hydropower turbines through 1 tube that outputs 24v each.
I.e. Beduan Micro Water Turbine Generator Hydroelectric Power G1/2" Male Thread 24V Micro Hydro Generator Changeing Tool
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Atlincabin
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# Posted: 14 Feb 2022 11:08
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Not efficient. A single larger turbine will be more efficient than several small ones for a number of reasons. Maybe not a lot, but certainly you will not get more energy from multiple small turbines than you would get from a single larger one.
Other than the efficiency, the problem I would see with multiple turbines is just the complexity of the overall setup which leads to many more potential points of failure.
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Nobadays
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# Posted: 14 Feb 2022 13:10
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Im no physicist so my explanation may not be worded correctly but here goes... It takes energy...kenetic.... in this case water pressure to rotate the turbine. Energy is "spent" in the process of turning the turbine so the next turbine in line will have less energy available to rotate its turbine... it in turn reduces the energy available to turn the next turbine and so forth. How much is lost with each turbine I do not know and is an interesting question itself!
Looking at the mini hydro turbines I see they put out 24v @10 watts. It would take a whole bunch of these to add up to what could be done with solar if a sunny area is available. The turbines would need a charge controller like solar but it must be equipped with a dump load to dissipate excess energy. These are not cheap.
If you have a stream with sufficient drop to enable the use of hydro power, by all means utilize it if possible but unless you just like fiddling with jury rigged electrical setups... remember water and electricity don't mix... look into quality equipment and do it right... I know, more costly but down the road you will be glad you did.
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ICC
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# Posted: 14 Feb 2022 13:17
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I would think if it was a good idea every hydroelectric generating plant would be doing that.
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gcrank1
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# Posted: 14 Feb 2022 13:17 - Edited by: gcrank1
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24v @ 10w = .416a before losses; ie, you will likely never see that much which doesnt even make 1/2 amp. 10 of those wont even make 5a, a trickle charge, not a real battery bank charge.
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Nobadays
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# Posted: 14 Feb 2022 13:32
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BTW... Looks like it takes 7.25psi to start the turbine, so just over 3' of elevation drop, likely more like 5-6' to generate rated voltage.
A possibility would be to bring a larger pipe down and branch off for each turbine. But.... if you are bringing a larger diameter pipe down.... if you have sufficient head, put in a larger turbine.
It would be fun to play with these though!
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gcrank1
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# Posted: 14 Feb 2022 14:29
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At that rate each one might light up an led bulb 24/7 but be pretty pricey for that lighting.
Years back, maybe in TMENs?, I saw an article about using an automotive alternator on a diy water turbine to gen for a 12v battery. There are calc's for how many rpm the alt needs to do to make an adequate charge.
If 24v is required I suppose a boosting transformer 12 to 24 would do?
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ICC
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# Posted: 14 Feb 2022 14:32
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Quoting: ICC I would think if it was a good idea every hydroelectric generating plant would be doing that.
By that I mean if this was efficient they eould place their larger turbines one after the other.
Put emough of these in serial connection in a water line and the cumulative friction, or change of energy from water flow to electricity, would slow the water flow to a trickle. Each time energy is removed from the water flow that will reduce the speed and energy remaining for the next in series turbine.
As someone once said, there is no free lunch
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ICC
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# Posted: 14 Feb 2022 14:35
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Q: If something was set up to experiment with some of these what would be the source of the water? Why is the water moving?
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AkamaruRules
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# Posted: 14 Feb 2022 23:41
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I was thinking gravity, tank from top of house filling multiple lines of these to the ground, then sent back up.
Also i understand what every comment is talking about as well
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FishHog
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# Posted: 15 Feb 2022 06:17
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By the time you pump that water back up you will have used more energy than you generated on the way down. Otherwise you would have invented the long sought after perpetual motion machine
If you don’t have natural flowing water these turbines are not for you
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Aklogcabin
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# Posted: 15 Feb 2022 10:38
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If you were using a tank n needed to pumped back up. I was thinking the siphon hoses with the ball cock in the bottom. The more water flow the more hoses rattling away.
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