Analysis on rotation timing of dynamic Rotating latent-energy-storage envelope (RLESE)

IF 6.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Developments in the Built Environment Pub Date : 2024-07-06 DOI:10.1016/j.dibe.2024.100498

Xi Meng

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Abstract

The application efficiency of the Dynamic Rotating Latent-Energy-Storage Envelope (DRLESE) system is highly contingent upon dynamic rotation timings. To gain the optimal rotation timings, six different timings were examined by employing the liquid fraction, thermal storage and release, surface temperature and heat flow. The numerical heat transfer method was employed and verified an experiment. Results indicated that the optimal initial rotation occurs in the forenoon, when the inner surface temperature aligns with the sol-air temperature. Subsequently, achieving optimal secondary rotation is possible in the afternoon when the sol-air temperature equals the liquid temperature of PCM (Phase Change Material). Under these optimized initial and secondary rotation timings, the significant enhancements in thermal performance of the DRLESE system were observed. By optimizing rotation timings, indoor effective heat release can reach up to 3182.9 kJ/Day with an effectiveness percentage exceeding 99.99%, and inner surface heat flow was increased by 5.86%–12.26%.

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动态旋转潜伏能量储存包络（RLESE）的旋转时间分析

动态旋转潜热-储能包络（DRLESE）系统的应用效率在很大程度上取决于动态旋转时间。为了获得最佳旋转时间，研究人员利用液体分数、热储存和释放、表面温度和热流量对六种不同的时间进行了研究。采用了数值传热方法，并进行了实验验证。结果表明，最佳初始旋转发生在正午，此时内表面温度与溶胶空气温度一致。随后，在下午，当溶胶-空气温度等于 PCM（相变材料）的液体温度时，可以实现最佳的二次旋转。在这些优化的初始和二次旋转时间下，DRLESE 系统的热性能显著提高。通过优化旋转时间，室内有效放热量可达 3182.9 kJ/天，有效率超过 99.99%，内表面热流量增加了 5.86%-12.26%。

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来源期刊

Developments in the Built Environment Multiple-

CiteScore

7.40

自引率

1.20%

发文量

审稿时长

22 days

期刊介绍： Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.