1000 Amps with 1 Volt - MHD pump
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- čas přidán 1. 06. 2024
- 1000 Ampere magnetohydrodynamic (MHD) liquid metal pump demonstrates Lorentz force in laboratory model. The following setup is an MHD conduction pump which uses magnetic field of permanent magnet and DC current to create perpendicular Lorentz force that drives the flow.
Thank you to colleagues in Institute of Physics
Video operator and artwork designer: Antra Gaile
MHD expert consultations: Linards Goldšteins
Video is made by: Reinis Baranovskis
Acknowledgements: This work was supported by ERDF project “Electromagnetic technology for aluminum degassing
process" with No. 1.1.1.1/18/A/149 and by University of Latvia Foundation stipend for Ph.D students in natural sciences.
Music: The Shining in Dubai by Unicorn Heads
Papers and sources:
www.researchgate.net/publicat...
0:00 Intro
0:36 GaInSn setup
1:10 MHD conduction pump
2:05 Moving electrodes and magnet
3:19 Axisymmetric current by ring electorde
4:18 Next video - Věda a technologie
Thanks for the great video about this fascinating property of electromagnetism "engage the caterpillar drive"
Wow.. just excellent!
I am compelled to say this is on the cusp of where science meets art.
Fantastic!
Does exist a video of AC resonant MHD drive and is its efficiency greatly increased due to not causing electrolysis to happen?
I want to stick my hand in it! A hand has so much more resistance than the non-toxic GaInSn metal that the current will harmlessly flow around.
At 1 volt it would also have a hard time actually breaking past the skin layer on your hand.
Awesome 😎👍 😊
Can v x B electric field produce static differential charge concentration in solid conductor?
Nice video, Thank you for sharing. Would you suggest an alternative conductive fluid, cheaper and non toxic, even if less conductive?
Saltwater or acid solution would be the cheapest from electrolytes. They of course will be 4-5 magnitudes less conductive than metals. If you have more resources you can choose from low melting temperature metals like: lead, tin, bismuth and their eutectic alloys. You will have to melt them, however, they will cost about ten times less than this.
Cool
The injection of that much electrical power must have heated the metal up considerably, did it not? I thought the idea was to extract heat, not inject more of it into the system.
Not really, because the voltage is low and resistance of the metal is small. Maximum applied current was 1000 amperes using voltage of around 1 V, making total power of ~ 1000 W. Some parts of electrical connections were getting warm, though.
I am building a theory around this being the queens chamber in the great pyramid of Egypt.
can you make a fountain?
Sure, why not.
do this in normal air with tens of millions of volts and you can go REALLY fast.
Doesn't your metal get hot at that amperage
The current results from the macro flow of the liquid rather than just charge moving through it I think
Not really. The wires have more ressitance than liquid metal part of circuit so only the cables got warm. And even that happened only at highest amperage.
@@MHDTechnologyLaboratory oh so, in the video you were only running at low power?...
Not really. Some clips are at 1000 amperes, some are at 500. After 1000 ampere runs we let cables cool down.
Please help me.
I want liguid gold from lead.
Aren't most liquids that conduct electricity very distructive to other components? Galium infuses into pretty much everything and salt water will corrode most metals.
You can use graphite electrodes. No galvanic effect.
@@huguesmassin8903 But how do you build a heat exchanger that can survive Gallium?
Sure but it's kind of niche, unless you own a reactor🤣
Besides nuclear enginneering there are also uses of electromagnetic machines in metallurgy. Pumping/stirring metal with coils and magnets.
Could an advanced craft use this tech without magnets by using earth’s magnetic fields?