Pulsating Heat Pipes

PHPs, similar to traditional heat pipes, utilize passive two-phase (liquid-vapor) operation to effectively transfer heat. Despite this similarity, the operation is quite different. Pulsating heat pipes do not utilize wick structures to drive the liquid return; instead, they operate with internal pressure pulsations that transfer the liquid and vapor slug within mini/micro, serpentine channels. A pulsating / oscillatory locomotion of liquid between the evaporator and condenser allows for both sensible and two-phase heat transfer, which can be very effective for localized component cooling.