A parametric analysis of the thermal performance of flat polypropylene pulsating heat pipes (PHPs) is presented. In particular, the thermal performance was characterized for pulsating heat pipes with different number of turns of the serpentine channel, different orientations with respect to gravity, and containing different heat transfer fluids. The dependence of polymeric PHPs performance on design parameters is poorly understood to date. The development of polymeric PHPs characterized by high mechanical flexibility will have significant impact on thermal management of smartphones, portable electronics, and deployable systems such as cube satellites. Several prototype PHPs with different number of turns of the serpentine channel were fabricated bonding together three polypropylene sheets by selective transmission laser welding, after cutting out a serpentine channel in the central sheet. The thermal performance of the devices was characterized by supplying an ascending/descending stepped thermal power ramp to the evaporator, and measuring the corresponding equivalent thermal resistance between the evaporator and the condenser.

对扁平聚丙烯脉动热管（PHP）的热性能进行了参数分析。特别地，对于具有蛇形通道的不同匝数，相对于重力的不同取向以及包含不同传热流体的脉动热管，表征了热性能。迄今为止，人们对聚合PHP性能对设计参数的依赖性了解甚少。具有高机械柔韧性的聚合PHP的开发将对智能手机，便携式电子设备和可部署系统（例如立方体卫星）的热管理产生重大影响。通过选择性透射激光焊接，制造了具有不同蛇形通道匝数的几个原型PHP，将三片聚丙烯板粘合在一起，在中央薄板上切出一条蛇形通道后。装置的热性能的特征是向蒸发器提供一个上升/下降的阶梯式热功率斜坡，并测量蒸发器和冷凝器之间的相应等效热阻。