An Investigation of Thermal Performance of Closed Loop Pulsating Heat Pipe

Using a mathematical model of a closed loop OHP with two branches, this paper investigates the motion law of internal working fluid and the working of heat transfer enhancement generated by different heat source modes, namely the even pulsing heat source mode (EP-mode) and the alternate heat source mode (AH-mode) (A-mode). The simulation result reveals that both the vapour plug pressure and the liquid slug displacement exhibit varied amplitude fluctuations under the three heating regimes.