Though not a direct answer, the following may be relevant: "Extracting Work from a Single Heat Bath via Vanishing Quantum Coherence" http://www.sciencemag.org/content/299/5608/862.short
"Extracting Energy from a Single Heat Bath via Vanishing Quantum Coherence: III. Master Equation Derivation" http://www.maik.ru/full/lasphys/03/3/lasphys3_03p375full.pdf "Extracting work from a single thermal bath via quantum negentropy" http://link.aps.org/doi/10.1103/PhysRevLett.87.220601 "Information erasure without an energy cost" http://arxiv.org/pdf/1004.5330.pdf (Video) "Erasure of information under conservation laws" http://qutube.ethz.ch/item/4 -- Lou Pagnucco Dave Roberson wrote: > Is there a method by which we can measure the amount of energy contained > within the spin sources and sinks? In principal I agree with you that > there are alternate sources of energy that can be tapped. A good example > is the storage of gravitational energy when a mass is placed higher in the > field. Every force supports energy storage when work is done against the > field and not dissipated as heat. > > > The big question is how much energy can be stored by the spin magnet and > how efficiently can it be absorbed and extracted in a cycle? A related > question would be: do certain materials contain natural large levels of > spin energy that can be extracted leaving them depleted? It appears that > you are more interested in developing materials that are designed with > spin energy storage in mind. This would be an excellent goal if the > energy density can be sufficient and the storage and extraction processes > kept efficient. > > > Dave > > > > -----Original Message----- > From: Jones Beene <[email protected]> > To: vortex-l <[email protected]> > Sent: Sat, Apr 13, 2013 10:05 am > Subject: RE: [Vo]:Yildiz motor in Geneva -- ran 5.5 hours then broke down > > > To go a bit further .. which is way out on a fragile limb > <g> > > ⦠in thermodynamics, heat goes to a heat-sink but spin plays > no role. In spin-dynamics, spin goes to a spin-sink and heat plays no > role. > The two should be combined, in order to accurately calculate CoE. > > That is a bit naïve but essentially it summarizes this > hypothesis - as epitomized in the reality of a magmo which captures > magnetic > spin by incorporating the spin-sink (macro-level of torque) as the > essential > feature of its operation. > > > From: David Roberson > > Jones, > > If it performed that well, then it would be > interesting. That amount of power extracted over such a long time period > would represent a large amount of energy. I tend to think of the energy > stored in a magnet as being relatively small since you can take an > unmagnetized piece of material and magnetize it with a modest amount of > input energy. Since I have a hang up concerning COE, I assume that there > is >%
