Previous correlations that have been used to predict the heat transfer performance of pulsating heat pipes (PHPs) offer limited thermal predictions within a narrow range of fluid-filling ratios and PHP inclinations. In this paper, a novel semi-empirical correlation with improved scope is proposed, with an increased range of fluid-filling ratios and PHP inclinations. The proposed correlation employs the dimensionless numbers governing the thermo-hydrodynamic operation of PHPs, and achieved ±30 % accuracy when predicting selected experimental data, showing reasonably good agreement. Unlike previous correlations, the new correlation can be used for different working fluids, geometrical aspect ratios, and heat loads. A comprehensive assessment of the relative significance of the correlation parameters on the total heat transfer performance is discussed. The new correlation with its flexible application range is expected to assist in faster and more enhanced thermal predictions as interest in PHPs grows.

以前用于预测脉冲热管（PHP）传热性能的相关性在有限的流体填充率和PHP倾斜范围内提供了有限的热预测。在本文中，提出了一种新颖的半经验相关性，具有改进的范围，并增加了流体填充率和PHP倾角的范围。拟议的相关性使用控制PHP的热流体动力学操作的无量纲数，并且在预测所选实验数据时达到±30％的精度，显示出相当好的一致性。与以前的相关性不同，新的相关性可用于不同的工作流体，几何纵横比和热负荷。讨论了相关参数对总传热性能的相对重要性的综合评估。随着对PHP的兴趣增加，新的相关性及其灵活的应用范围有望帮助更快，更增强地预测热量。