The heat transfer behavior and the structure of the liquid flow in a horizontal layer heated from below and having independently rotating horizontal boundaries are studied on a novel experimental set-up. The liquid layer has a diameter of 620 mm, and a height of 0 to 100 mm. The data acquisition system and the processing of images allow one to transmit the flow pattern from the rotating system to the laboratory coordinate system with subsequent microcomputer calculation of the specific dimensions of the flow. The character of different rotation regimes of the horizontal boundaries on the structure of thermogravitational convection in a liquid layer heated from below is investigated.