A novel full-spectrum-driven photocatalytic ventilated wall based on visible photocatalyst: Thermal and air purification performance

IF 6.1 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2025-03-25 DOI:10.1016/j.applthermaleng.2025.126318

Xuhui Cao , Huifang Liu , Guoji Zhang , Niansi Li , Jie Ji , Bendong Yu

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引用次数: 0

Abstract

The application of photocatalytic (PC) in Trombe wall to create a healthy and comfortable indoor environment has become a widely used technology, but the photocatalytic materials can only be excited by ultraviolet (UV) light, resulting in low solar spectral utilization. Therefore, a novel full-spectrum-driven photocatalytic ventilated wall based on visible (VIS) catalyst C-TiO₂ was proposed, which realized high thermal and purification performance. Firstly, the VIS catalyst (C-TiO₂) was prepared and characterized. Secondly, the thermodynamic performance of the system under different weather conditions was analyzed. Thirdly, the multi-factor kinetic model and the thermal and mass transfer model of the wall were established and verified. Finally, the thermal performance and purification performance of the wall and the traditional PC wall were compared. The main results were: (1) Due to the doping of C element, the spectral response range of the catalyst had a clear tendency to shift to the VIS. The degradation ratio of formaldehyde was 27.33–50.00 %. (2) The average thermal efficiency and average purification efficiency of the wall were 0.29 and 0.53 in a sunny day, respectively. The average thermal efficiency and average purification efficiency of the wall were 0.26 and 0.48 in a cloudy day, respectively. (3) The average thermal efficiency and clean air delivery rate (CADR) were 1.31 times and 3.86 times that of PC wall, respectively.

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来源期刊

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.