PhysicsProf Steven E. Jones circuit shows 8x overunity ?

[MarkE]

View this video on "Smart" Magnocaloric materials:


https://www.youtube.com/watch?v=xVhAvp17xJ8


A schematic for a solid state PM field changer:

Magnetocaloric materials are useful for making heat pumps.  If you want to move heat energy from a colder reservoir to a hotter one as do air conditioners, and refrigerators, then you need something that you can get into a lower temperature state than the cold reservoir so as to absorb heat from that reservoir, and without adding a lot of energy get to a hotter temperature than your hot reservoir so that you can reject the absorbed and added heat into the hot reservoir.

BTW: There is an error in the schematic.  The N channel MOSFET is drawn with the drain on the negative side of the battery.  The source terminal needs to attach to the negative terminal of the battery and the drain to the coil.  The coil should also have a flyback diode around it, anode to the MOSFET drain, and cathode to the battery positive side of the coil.

[synchro1]

Here's a contender:


https://www.youtube.com/watch?v=kO_I-C9CokQ




This amounts to only a five week old discovery:  Pivoting those GGG Barium Titinate crystals 90 degrees in the external magnetic field activates the full temperature shift.

[MarkE]

Look at these GGG "Smart" adiabatic demagnetization crystals:

https://www.youtube.com/watch?v=jxYmiv8GZoA



Positioning these kinds of Crystals where the iron core is in the above schematic, would power a Sterling motor with the temperature differential. A gas filled diaphragm would expand and contract if placed over the Crystals! It should run at around one Hertz. Propane would work very well.


We can eliminate the Mu metal if we simply reverse the current through the switch coils.


A Lever arm from the diaphragm might be enough to spin the crystals in the PM field to heat and cool the diaphragm. Voila, perpetual motion!

This would not work any better than driving a Stirling engine with the difference between the hot and cold exhausts of a conventional heat pump.  The Carnot limit is going to be a big problem in both cases.

[synchro1]

The temperature differential tests out at 35 degrees Kelvin per 40 thousand Orsteads of magnetic field force for those GGG crystals. Two of them in high pressure gas chambers, with a reciprocating piston, one on each end magnetically pivoted, would expand and contract the gas, and turn a Scottish Yoke, perhaps at low RPM with lots of torque. A 12 cylinder Radial would probably work well.

[MarkE]

What you end up with is a complicated and inefficient electric motor.  It takes real energy to turn and relax the domains in the magnetocaloric material.  That work is directly analagous to the work that is required to compress the refrigerant in a heat pump.  In both cases, were the COP>1: more heat is moved from the cold to the hot reservoir than energy is expended effecting the move.  That may sound good until one figures out that the Carnot limit on the Stirling engine is:  (T_HOT - T_COLD)/T_HOT), and that  Q_{MOVED_STIRLING} < Q_{MOVED_HEAT_PUMP} and that (T_HOT - T_COLD)/T_HOT*Q_{MOVED_HEAT_PUMP} < E_{INPUT_HEAT_PUMP}.