Patent ID: 6976360
Filing Date: 2005-12-20
Classification: F01K,F03G

Abstract:
1. A steam engine comprising: a fluid container in which working fluid is filled and the working fluid can move; a heating device for heating the working fluid in the fluid container and vaporizing the working fluid, the heating device having a flow passage formed by a heating surface and the working fluid flowing through the flow passage; and a cooling device for cooling down and liquidizing the steam vaporized by the heating device, wherein kinetic energy is generated by periodically moving the working fluid in the fluid container by heating and cooling the working fluid by the heating device and the cooling device, wherein a diameter of the flow passage is made almost equal to or smaller than a depth of heat penetration (δ), which is determined by the following mathematical formula: wherein “a” is a heat diffusivity of the working fluid, and “ω” is an angular frequency of the working fluid during the working fluid is periodically moved back and forth.