Abstract: An installation and method for the conversion of thermal energy into mechanical energy. The installation includes at least two closed containers, a converter for the conversion of flow energy into mechanical energy, a switching system as well as a supply line, a discharge line and a heat supply system. Each time, the converter is supplied with a fluid under high pressure and temperature from one container and the temperature-reduced fluid is then collected in another container. As soon as the other container is filled and the first container becomes empty, these containers are exchanged or replaced by other containers.