Experimental study on optical properties of various paraffin-based PCM glazing unit and radiative transfer model optimization

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2024-11-17 DOI:10.1016/j.optmat.2024.116431

Zhenhao Zhang , Yi Wang , Yanqiu Huang , Mustapha Karkri , Mahamadou Abdou Tankari , Laurent Ibos

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引用次数: 0

Abstract

Integrating phase change material (PCM) into glazing units can lead to the ability of dynamic response to solar radiation and enhance thermal mass. In order to clarify the optical performance of phase change material glazing unit (PCMGU) during the dynamic response stage, this study analyzes the variations of transmittance and reflectance of PCMGUs filled with different paraffins during phase change process, by using a spectrophotometer and a temperature measurement device. Additionally, the impact of the paraffin cooling rate on this process was also examined. The experimental results indicate that: (1) During the solid-liquid phase change process, the curve of PCMGU transmittance and reflectance versus paraffin temperature exhibits a significant linear characteristic, with 75–93 % of transmittance and reflectance changes appearing during this stage; (2) Adjusting the paraffin cooling rate does not alter this linear characteristic; (3) Approximately 19 % and 36 % of PCMGU transmittance and reflectance changes occur during the solid-solid phase change process, respectively. Finally, based on the experimental patterns, the radiative transfer model for PCMGU was optimized, reducing its calculation error to a range of 0.17–0.92 times that of previous models (in terms of root mean square error).

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各种石蜡基 PCM 玻璃单元光学特性的实验研究与辐射传递模型优化

在玻璃单元中加入相变材料（PCM）可以提高对太阳辐射的动态响应能力，并增强热质量。为了明确相变材料玻璃单元（PCMGU）在动态响应阶段的光学性能，本研究使用分光光度计和温度测量装置，分析了填充不同石蜡的 PCMGU 在相变过程中的透射率和反射率变化。此外，还研究了石蜡冷却速度对这一过程的影响。实验结果表明(1) 在固-液相变过程中，PCMGU 的透射率和反射率与石蜡温度的关系曲线呈现出明显的线性特征，75%-93% 的透射率和反射率变化出现在这一阶段；(2) 调整石蜡冷却速率不会改变这一线性特征；(3) 在固-固相变过程中，PCMGU 的透射率和反射率分别发生了约 19% 和 36% 的变化。最后，根据实验模式，对 PCMGU 的辐射传递模型进行了优化，将其计算误差减小到以前模型的 0.17-0.92 倍（均方根误差）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.