FIELD: power engineering. SUBSTANCE: method uses two adjacent spaces. The bottom space is filled with liquid and the top space is filled with gas. The liquid and gas have different temperatures. A rotor is placed on the liquid surface for permitting rotation about the horizontal axis. The rotor has a hollow rim whose specific weight is less than specific weight of the liquid. The rim is connected with the hub of the rotor through same connections arranged over periphery uniformly. The connections can be extended and compressed along the radius depending on temperature. The rotor is partially submerged into the liquid. The connections, arranged within liquid and gas, have different lengths due to temperature difference between two fluids. As the result, the rim is eccentrically arranged with respect to the horizontal axis and different forces act on smaller and larger spaces of the rim arranged on both sides of the vertical plane which is coincident with the horizontal axis of rotation. The device has tank filled with liquid, rotor made up as a hollow rim, hub, and connections which connect them. The hub is mounted on the horizontal shaft, bears on supports and can rotate freely. The rim is made up as a torus and its specific weight is less than specific weight of the liquid. The connections are made of a material having reversible heat extension, e. g. of thermobimetal. The rotor is partially submerged into the liquid. Temperatures of liquid and gas are different. The connections are made up as thermobimetallic plates or springs. EFFECT: enhanced efficiency. 4 cl, 4 dwg
