In cryogenic conditions, a Pulsating heat pipe (PHP) can be used to transport a high heat flux across a relatively small temperature difference. Using empirical techniques to design such a PHP is unreliable due to the shortage of experimental dataset available for cryogenic operation. A numerical model developed for cryogenic temperatures and compared with experiments conducted at those temperatures is missing from the literature. In this study, a model available for ambient temperature conditions is modified to simulate the working of a nitrogen-based PHP. The effect of various geometric and operational parameters on the internal heat transfer mechanism of the device is also presented. The results indicate the presence of optimum inner tube diameter, fill ratio, and number of turns at which peak performance can be extracted.

在低温条件下，可以使用脉动热管（PHP）在相对较小的温差范围内传输高热通量。由于缺乏可用于低温操作的实验数据集，因此使用经验技术来设计这样的PHP是不可靠的。文献中缺少为低温温度开发的数值模型，并与在该温度下进行的实验进行了比较。在这项研究中，修改了适用于环境温度条件的模型，以模拟基于氮的PHP的工作。还介绍了各种几何和操作参数对设备内部传热机制的影响。结果表明存在最佳内管直径，填充比和可以提取峰值性能的匝数。