CFD analysis of the impact of air gap width on Trombe wall performance

IF 3.5 3区工程技术 Q3 ENERGY & FUELS

Energy Science & Engineering Pub Date : 2024-10-03 DOI:10.1002/ese3.1913

Khaoula Friji, Ons Ghriss, Abdallah Bouabidi, Erdem Cuce, Saad Alshahrani

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Abstract

In recent years, there has been a lot of research and debate on how solar energy can be used instead of conventional sources of heating to power residential heating. In this study, the Trombe wall (TW) technique, based on natural convection and energy storage, was examined to predict mass flow rate, temperature field, and velocity field for the TW system under steady conditions. A numerical simulation model was investigated for further validation using k-ε turbulence and discrete ordinates (DO) radiation models. Independent grid studies were conducted to ensure that there were no changes after varying the grid numbers. The effect of the air gap was carried out to enhance TW thermal performance. CFD simulation shows good agreement with published data in the literature, and the optimum air gap was set at 0.1 m. The results pave the way for future studies to improve passive solar heating systems, which will eventually help move towards more sustainable residential heating solutions.

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气隙宽度对 Trombe 墙性能影响的 CFD 分析

近年来，人们对如何利用太阳能替代传统热源为住宅供暖进行了大量研究和讨论。在本研究中，研究了基于自然对流和储能的 Trombe 壁（TW）技术，以预测 TW 系统在稳定条件下的质量流量、温度场和速度场。为了进一步验证，使用 k-ε 湍流和离散序数（DO）辐射模型对数值模拟模型进行了研究。进行了独立网格研究，以确保在改变网格数后没有变化。为了提高 TW 的热性能，还对空气间隙的影响进行了研究。CFD 模拟结果与文献中公布的数据非常吻合，最佳气隙设定为 0.1 米。这些结果为今后改进被动式太阳能供热系统的研究铺平了道路，最终将有助于实现更可持续的住宅供热解决方案。

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 Science & Engineering Engineering-Safety, Risk, Reliability and Quality

CiteScore

6.80

自引率

7.90%

发文量

298

审稿时长

11 weeks

期刊介绍： Energy Science & Engineering is a peer reviewed, open access journal dedicated to fundamental and applied research on energy and supply and use. Published as a co-operative venture of Wiley and SCI (Society of Chemical Industry), the journal offers authors a fast route to publication and the ability to share their research with the widest possible audience of scientists, professionals and other interested people across the globe. Securing an affordable and low carbon energy supply is a critical challenge of the 21st century and the solutions will require collaboration between scientists and engineers worldwide. This new journal aims to facilitate collaboration and spark innovation in energy research and development. Due to the importance of this topic to society and economic development the journal will give priority to quality research papers that are accessible to a broad readership and discuss sustainable, state-of-the art approaches to shaping the future of energy. This multidisciplinary journal will appeal to all researchers and professionals working in any area of energy in academia, industry or government, including scientists, engineers, consultants, policy-makers, government officials, economists and corporate organisations.