基于弹性过滤器的 PM2.5 污染级自适应空气过滤系统,可降低能耗。

Journal of hazardous materials Pub Date : 2024-10-05 Epub Date: 2024-08-15 DOI:10.1016/j.jhazmat.2024.135546
Zhuolun Niu, Qiguang He, Chun Chen
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引用次数: 0

摘要

由于人类活动和自然事件的加剧,空气污染带来了严重的健康风险,需要采取有效的控制措施来确保健康的生活环境。采用高效空气微粒(HEPA)过滤器的传统过滤系统能够有效去除室内环境中的微粒物质(PM)。然而,这些系统在工作时往往没有考虑空气污染水平的波动,从而导致高能耗。本研究提出了一种新型 PM2.5 污染水平自适应空气过滤系统,该系统结合了弹性热塑性聚氨酯(TPU)过滤器和物联网(IoT)系统。所开发的系统可通过机械改变热塑性聚氨酯过滤器的结构,有效调节其过滤性能(即压降和 PM2.5 过滤效率),以应对实时空气质量条件。此外,在不同的污染条件下运行时,所提出的系统在不明显影响污染控制能力的情况下显著降低了压降。最后,在不同城市(香港、北京和西安)的不同污染条件下,对污染级别自适应空气过滤系统应用于机械通风系统的能耗进行了估算。结果表明,与传统的固定系统相比,香港每年的能耗最多可减少 26.4%。
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A PM2.5 pollution-level adaptive air filtration system based on elastic filters for reducing energy consumption.

Exacerbated by human activities and natural events, air pollution poses severe health risks, requiring effective control measures to ensure healthy living environments. Traditional filtration systems that employ high-efficiency particulate air (HEPA) filters are capable of effectively removing particulate matter (PM) in indoor environments. However, these systems often work without considering the fluctuations in air pollution levels, leading to high energy consumption. This study proposed a novel PM2.5 pollution-level adaptive air filtration system that combined elastic thermoplastic polyurethane (TPU) filters and an Internet of Things (IoT) system. The developed system can effectively adjust its filtration performance (i.e., pressure drop and PM2.5 filtration efficiency) in response to real-time air quality conditions by mechanically altering the structures of TPU filters. Furthermore, while operating in varied pollution conditions, the proposed system demonstrated remarkable reductions in pressure drop without notably compromising the pollution control capability. Finally, the energy consumption of the pollution-level adaptive air filtration system was estimated when applied in mechanical ventilation systems in different cities (Hong Kong, Beijing, and Xi'an) with various pollution conditions. The results revealed that, compared to a traditional fixed system, the annual energy consumption could be reduced by up to ∼26.4 % in Hong Kong.

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