用于净化除菌的新型净化型光伏Trombe墙性能研究

doi:10.52396/JUST-2020-0018

中国科学技术大学学报 ›› 2021, Vol. 51 ›› Issue (4): 308-318.DOI: 10.52396/JUST-2020-0018

用于净化除菌的新型净化型光伏Trombe墙性能研究

李念思^1,2, 刘小勇^2,3, 余本东^1*

1.中国科学技术大学热科学和能源工程系,安徽合肥 230026;
2.清华大学合肥公共安全研究院检验检测中心,安徽合肥 230601;
3.灾害环境人员安全安徽省重点实验室,安徽合肥 230601

收稿日期:2021-01-07 修回日期:2021-02-21 出版日期:2021-04-30 发布日期:2021-11-24
通讯作者: * E-mail: bendong@mail.ustc.edu.cn

The performance analysis on a novel purified PV-Trombe wall for electricity, space heating, formaldehyde degradation and bacteria in activation

Li Niansi^1,2, Liu Xiaoyong^2,3, Yu Bendong^1*

1. Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230026, China;
2. Inspection and testing center, Hefei Institute for Public Safety Research, Tsinghua University, Hefei 230601, China;
3. Anhui Province Key Laboratory of Human Safety, Hefei, 230602,China

Received:2021-01-07 Revised:2021-02-21 Online:2021-04-30 Published:2021-11-24
Contact: * E-mail: bendong@mail.ustc.edu.cn

摘要/Abstract

摘要： PV-Trombe墙是一种太阳能利用系统,能实现室内采暖和产电双重功能,但其对太阳热的利用非常有限.热催化氧化和热杀菌是两种先进的空气净化技术,利用太阳热能进行热脆化氧化和除菌杀毒具有巨大的应用潜力.基于此,提出了一种新型的净化PV-Trombe墙,能实现产电、室内采暖、甲醛降解和除菌.首先,建立了净化PV-Trombe墙的传热传质模型,并通过实验数据进行了验证.其次,分析了光伏覆盖率为0时的综合性能.最后,研究了光伏覆盖率对系统性能的影响.结果表明:①PV覆盖率为0时,平均日空气热效率为0.46,甲醛单通率为0.35;甲醛降解产生的洁净空气总量为93.4 m³;五种细菌被完全热灭活了几个小时.大肠杆菌、单核增生杆菌、植物杆菌、森夫滕伯格菌和酿酒酵母失活产生的洁净空气总生成量分别为188.3、173.0、201.4、189.9和200.2 m³.②光伏覆盖率对系统综合性能的影响不同.就特定性能而言,光伏覆盖率仅对电性能有正向影响,对其他性能如热性能、甲醛降解性能和除菌性能有负面影响.但考虑到系统的综合性能,建议电能为附加产品,光伏覆盖率较低.③系统可为新冠肺炎疫情防控提供支持.

关键词: Trombe墙, 光伏, 太阳能杀菌, 太阳能热催化氧化, 空间加热

Abstract: On the one hand, PV-Trombe wall is a combined solar system that meets dual functions of space heating and electricity output, but the utilization on the recovered solar heat by PV-Trombe wall is very limited. On the other hand, thermal catalytic oxidation and thermal sterilization are two advanced air purification technologies and both they have huge application potential with solar heat. Therefore, a novel purified PV-Trombe wall for electricity, space heating, formaldehyde degradation and bacteria inactivation was proposed. Firstly, the system thermal and mass transfer model was established and verified by experimental data. Secondly, the comprehensive performance with the PV coverage ratio of 0 was analyzed. Finally, the effect of PV coverage ratio on the system performance was investigated. Accordingly, the main results were: ① Under PV coverage ratio of 0, the average daily air thermal efficiency and formaldehyde single-pass ratio were 0.46 and 0.35, respectively. Meanwhile, the total generated volume of clean air by formaldehyde degradation was 93.4 m³. Five kinds of bacteria were fully thermal inactivated for several hours. Accordingly, the total generated volume of clean air were 188.3, 173.0, 201.4, 189.9 and 200.2 m³ for E.coli, L.monocytogenes, L.plantarum, S.Senftenberg and S.cerevisiae, respectively. ② The PV coverage ratio played a different role on the system comprehensive performances. For specific performances, the PV coverage ratio only had a positive influence on electrical performance and had negative effect on other performances such as thermal, formaldehyde degradation and bacteria inactivation performances. However, considering the system comprehensive performances, the electrical energy was the additional product and the low PV coverage ratio was suggested. ③ The works could provide possible support to the prevention and control of COVID-19.

Key words: Trombe wall, PV, solar thermal sterilization, solar thermal catalytic oxidation, space heating

中图分类号:

TU832.5

李念思, 刘小勇, 余本东. 用于净化除菌的新型净化型光伏Trombe墙性能研究[J]. 中国科学技术大学学报, 2021, 51(4): 308-318.

LI Niansi, LIU Xiaoyong, YU Bendong. The performance analysis on a novel purified PV-Trombe wall for electricity, space heating, formaldehyde degradation and bacteria in activation[J]. Journal of University of Science and Technology of China, 2021, 51(4): 308-318.

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用于净化除菌的新型净化型光伏Trombe墙性能研究

The performance analysis on a novel purified PV-Trombe wall for electricity, space heating, formaldehyde degradation and bacteria in activation

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