This paper describes "ene-geometrix", an installation using fluid thermal convection phenomena. We produced this work to make an opportunity when people obtain the insight to the energy system symbolizing the today's paradigm shift from the mechanical view of nature to the view of nature by the theory of life. In this installation, applied the flow visualization method and the technology of the control engineering, various shapes are drawn on a liquid surface by the flow caused by the thermal actuator control and the Self-organization phenomena.