Zahir Md Hasan, Rahman Mohammad Mominur, Mohaisen Khaled Own, Helal Aasif, Shaikh M Nasiruzzaman, Rahman Mohammad Mizanur
Interdisciplinary Research Center for Renewable Energy and Power Systems (IRC-REPS), Research Institute, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran31261, Saudi Arabia.
Department of Electrical & Electronic Engineering, Ahsanullah University of Science & Technology, Dhaka1215, Bangladesh.
ACS Omega. 2022 Nov 7;7(45):41096-41099. doi: 10.1021/acsomega.2c04594. eCollection 2022 Nov 15.
It is essential to determine the heat storage efficiency of shape-stabilized phase change materials (ss-PCMs). In two published articles, the formula for heat storage efficiency is presented using two distinct equations. Using the two equations, the calculated values for heat storage efficiency revealed significant discrepancies. The outcomes cannot be compared. The evaluation of heat storage efficiency has a substantial impact on the practical application of PCMs and serves as a performance benchmark for the PCM samples that have been tested. In this paper, the correct equations for calculating the efficiency of heat storage are presented. Furthermore, it is essential to note that the methods used to calculate the supercooling value are not straightforward. Consequently, this paper clarified the correct formula and/or method for determining the supercooling value and heat storage efficiency of ss-PCMs.
确定形状稳定相变材料（ss-PCM）的储热效率至关重要。在两篇已发表的文章中，储热效率公式是用两个不同的方程给出的。使用这两个方程，计算出的储热效率值显示出显著差异。结果无法进行比较。储热效率的评估对PCM的实际应用有重大影响，并作为已测试PCM样品的性能基准。本文给出了计算储热效率的正确方程。此外，必须注意的是，用于计算过冷度值的方法并不简单。因此，本文阐明了确定ss-PCM过冷度值和储热效率的正确公式和/或方法。
