Abstract: A power plant with at least two pressure vessels containing a hydraulic fluid. A heat exchanging assembly is in heat transferring association with the pressure vessels. The hydraulic conduit is hydraulically connected with the pressure vessels. A power outlet device is in hydraulic association with the conduit between the vessels and is configured for outputing power from the flow of the hydraulic fluid. A controlling mechanism is operably associated with the heat exchanging assembly to cause the heat exchanging assembly to alternately increase the pressure in one of the pressure vessels compared to the other. Thus, hydraulic fluid is caused to flow through the power outlet device alternately between the pressure vessels to produce power from the power output device.

Abstract: A tube or conduit for conducting a flow of fluid such as is used in connection with an engine, the tube or conduit having a flow surface with a plurality of indentations spaced apart from each other such that a fluid layer is formed across the surface, the fluid layer insulating the fluid from ambient heating and lower the resistance faced by the fluid such that a larger volume of fluid reaches the engine at a given time to thereby increase engine output.