Carnot cycle heat operated motor

An apparatus comprised of two liquid containing sumps, a multiplicity of groups of four fluid containment vessels connected to each other by fluid transfer tubes and to an axle by spokes with the axle supported by bearings so that the shaft can rotate, with the vessels located in pairs such that the pairs are located approximately 180.degree. apart axially and such that each member of one pair is located at approximately an equal longitudinal distance along the shaft from a corresponding member of the other pair;

• each group of vessels with approximately the same longitudinal location on the shaft constituting a wheel located in relation to the sump so the vessels are alternately immersed and lifted out as the axle rotates, the sump under one wheel being relatively hotter than the one under the other wheel, each group of four vessels containing a binary mixture of miscible liquids having vapor pressure intermediate between the vapor pressure of the pure components and a transfer tube arrangement such that the vapor pressure in the heated vessel drives the liquid phase from lower vessels into the upper vessels in a criss-cross pattern, the liquid from the hot wheel going to the cold wheel and the liquid from the cold wheel going to the hot wheel, the resulting unbalance causing rotation of the axle which continues due to the alternate heating and cooling of the fluid as it rotates.