An Open Oscillatory Heat Pipe Steam-Powered Boat

Abstract

An open oscillatory heat pipe is a very simple device that is capable of doing work. Although as an engine its thermal efficiency is relatively poor, as a heat transfer device it can transfer a relatively large quantity of heat against gravity, without a wicking material or any moving parts. The thermal and fluid dynamic equations are given whereby the device may be mathematically modelled. Computer-generated results for thrust, pressure and temperature as a function of time are given and discussed. Comparing the theoretical with experimentally obtained thrust curves, it is concluded that the mathematical model reflects the physical behaviour of the device reasonably well. Limitations of the present model are discussed and it is recommended that the device should find application in heat transfer rather than as an engine.