Thermal performance analysis of a Trombe wall with the multi-row channel PCM wallboard

IF 9 1区工程技术 Q1 ENERGY & FUELS

Energy Pub Date : 2024-11-10 DOI:10.1016/j.energy.2024.133796

Yazi Li , Yonggang Lei , Yao Yan , Chongfang Song

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引用次数: 0

Abstract

A novel Trombe wall with the multi-row channel phase change material wallboard (MCPCM-TW) is proposed to enhance the solar energy utilization. The structure contains the glazing, the heat-absorbing layer and the phase change thermal storage layer with several built-in channels, either aligned vertically or horizontally. The thermal performance of the Trombe walls, which consist of the multi-row vertical channel phase change material wallboard (V-MCPCM-TW) and the multi-row horizontal channel phase change material wallboard (H-MCPCM-TW), were investigated numerically in the present research. Meanwhile, the Trombe wall incorporating phase change thermal storage layer without built-in channels also studied in the paper. The results indicate that, the multi-row channel phase change material wallboard effectively enhances the heat storage and release of the phase change thermal storage layer, thereby extending the duration of ventilation and increasing the cumulative heat supply of the rooms equipped with the novel Trombe wall. Specifically, the V-MCPCM-TW has a higher maximum liquid volume fraction during the heat storage. Compared with the Trombe wall incorporating phase change thermal storage layer without built-in channels, the V-MCPCM-TW has a 16 % increase in maximum liquid volume fraction and a 15.5 % increase in cumulative heat supply within a certain period.

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使用多排通道 PCM 壁板的 Trombe 墙的热性能分析

为提高太阳能利用率，我们提出了一种新型的多排通道相变材料墙板（MCPCM-TW）特罗姆贝墙。该结构包含玻璃、吸热层和相变蓄热层，内置多个垂直或水平排列的通道。本研究对由多排垂直通道相变材料墙板（V-MCPCM-TW）和多排水平通道相变材料墙板（H-MCPCM-TW）组成的 Trombe 墙的热性能进行了数值研究。同时，本文还研究了不带内置通道、包含相变蓄热层的 Trombe 墙体。研究结果表明，多排通道相变材料墙板能有效提高相变蓄热层的蓄热和放热能力，从而延长通风时间，增加装有新型 Trombe 墙的房间的累积供热量。具体来说，V-MCPCM-TW 在蓄热期间的最大液体体积分数更高。与包含相变蓄热层但没有内置通道的 Trombe 墙相比，V-MCPCM-TW 在一定时间内的最大液体体积分数增加了 16%，累计供热量增加了 15.5%。

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

Energy 工程技术-能源与燃料

CiteScore

15.30

自引率

14.40%

发文量

审稿时长

14.2 weeks

期刊介绍： Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics. The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management. Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.