  Possible application of a result contradicting to the second law of
thermodynamics is announced. According to this result the chaotic energy of
thermal fluctuation can be transformed in electric energy of direct current in
an inhomogeneous superconducting ring. Although the power of this
transformation is very weak this effect has optimistic perspective of wide
application because useful energy can be obtained from heat energy in the
equilibrium state. It is explain why the second law can be broken in some
quantum systems. In the last years some authors have concluded almost at once
on violation of the second law in different quantum systems: A.E.Allahverdyan
and Th.M.Nieuwenhuizen, PRL 85, 1799 (2000); cond-mat/0011389; V.Capec and
J.Bok Czech. J. of Phys. 49, 1645 (1999); cond-mat/0012056; Physica A 290, 379
(2001); D. Sheehan, Phys. Plasmas 2 (6), 1893 (1995); Phys. Rev.E 61, 4662
(2000); P. Weiss, Science News, 158, 234 (2000).
