FIELD: physics.
SUBSTANCE: invention relates to magnetism and can be used as an energy device. A soft ferromagnetic rotator, having multiple permanent magnets magnetically coupled with a ferromagnetic ring with a radius R and rotating with an angular velocity ω on an axis, said magnets being arranged symmetrically about the ferromagnetic ring and having a saturating magnetic field for the used ferro-material with constant magnetic viscosity τ=eL/ωR, where e=2.718 is the base of the natural logarithm, L is the length of the magnetic gaps of the permanent magnets along the body of the ferromagnetic ring. The number of permanent magnets is selected to be even. Adjacent permanent magnets are turned relative to the ferromagnetic ring such that the magnetic field vectors thereof are mutually opposite and the material of the ferromagnetic ring is selected with a high coercitive force such that the remnant magnetisation of the ferro-material is comparable with the maximum magnetisation in a saturating magnetic field. The even number N of the used permanent magnets is selected based on the condition N≤πR/2L. During interaction of a ferromagnetic ring rotating with angular velocity ω*=L/eRτ with a permanent magnet with a saturating magnetic field HSAT, a tangential force F1 is applied to the ring, the force being directed along the vector of linear velocity V=ωR of the ferromagnetic ring and approximately equal to F1*=0.276 µ0 Δχ HSAT 2S, where µ0=1.256×10-6 H/m is the absolute magnetic permittivity of vacuum, Δχ is drop in magnetic susceptibility of the ferromagnetic material when passing through a magnetic gap with a length L of the permanent magnet, S is the cross-sectional area of the ferromagnetic ring covered by the saturating magnetic field HSAT. When an even number N of permanent magnets is used, the resultant tangential force FΣ*=N F1*. The action of the device is based on the ferromagnetic thermodynamic effect and employs heat energy of the surrounding medium, for example sea or ocean water, which is virtually an unlimited resource.
EFFECT: wider variation range of magnetic susceptibility during operation of the device.
9 dwg
