Evaluation and prediction of fibrous filters' operating performance in residential fresh air system

Fibrous filters play a crucial role in determining indoor air quality and protect people from bacteria, particulates, and viruses such as COVID-19. However, there is a lack of comprehensive research on methods for effectively evaluating and predicting the operating performance of these filters. In t...

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Main Authors: Zhang, Miao, Liu, Junjie, Liu, Xinyu, Zhang, Xin
Other Authors: Energy Research Institute @ NTU (ERI@N)
Format: Article
Language:English
Published: 2024
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Online Access:https://hdl.handle.net/10356/179022
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1790222024-07-16T15:37:56Z Evaluation and prediction of fibrous filters' operating performance in residential fresh air system Zhang, Miao Liu, Junjie Liu, Xinyu Zhang, Xin Energy Research Institute @ NTU (ERI@N) Earth and Environmental Sciences Air filtration Indoor air quality Fibrous filters play a crucial role in determining indoor air quality and protect people from bacteria, particulates, and viruses such as COVID-19. However, there is a lack of comprehensive research on methods for effectively evaluating and predicting the operating performance of these filters. In this study, we conducted laboratory and field tests on coarse (G4) and medium (F9 or F7) filters from four different brands to assess both their initial and operating performance. We discovered that a fluffy fiber structure in coarse filters could achieve an impressive threefold increase in dust holding capacity (DHC) compared to normal filters. Utilizing initial pressure drop, initial particle capture efficiency, and DHC, we introduced a new quality factor (QF) that integrates these parameters to evaluate the filter's long-term performance. This approach addresses the limitations of traditional quality factor, which neglects DHC and tends to underestimate the performance of filters with high DHC. Additionally, we proposed a simple method to predict the filter's operating pressure drop, using particle concentration data from weather report. This allows for convenient assessment of the fresh air system's operating status, offering potential integration into a user-friendly mobile application or computer software. These findings contribute innovative ideas for enhancing the intelligent and energy-efficient operation of fresh air systems. Submitted/Accepted version 2024-07-16T06:16:40Z 2024-07-16T06:16:40Z 2024 Journal Article Zhang, M., Liu, J., Liu, X. & Zhang, X. (2024). Evaluation and prediction of fibrous filters' operating performance in residential fresh air system. Building and Environment, 255, 111441-. https://dx.doi.org/10.1016/j.buildenv.2024.111441 0360-1323 https://hdl.handle.net/10356/179022 10.1016/j.buildenv.2024.111441 2-s2.0-85189345224 255 111441 en Building and Environment © 2024 Elsevier Ltd. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1016/j.buildenv.2024.111441. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Earth and Environmental Sciences
Air filtration
Indoor air quality
spellingShingle Earth and Environmental Sciences
Air filtration
Indoor air quality
Zhang, Miao
Liu, Junjie
Liu, Xinyu
Zhang, Xin
Evaluation and prediction of fibrous filters' operating performance in residential fresh air system
description Fibrous filters play a crucial role in determining indoor air quality and protect people from bacteria, particulates, and viruses such as COVID-19. However, there is a lack of comprehensive research on methods for effectively evaluating and predicting the operating performance of these filters. In this study, we conducted laboratory and field tests on coarse (G4) and medium (F9 or F7) filters from four different brands to assess both their initial and operating performance. We discovered that a fluffy fiber structure in coarse filters could achieve an impressive threefold increase in dust holding capacity (DHC) compared to normal filters. Utilizing initial pressure drop, initial particle capture efficiency, and DHC, we introduced a new quality factor (QF) that integrates these parameters to evaluate the filter's long-term performance. This approach addresses the limitations of traditional quality factor, which neglects DHC and tends to underestimate the performance of filters with high DHC. Additionally, we proposed a simple method to predict the filter's operating pressure drop, using particle concentration data from weather report. This allows for convenient assessment of the fresh air system's operating status, offering potential integration into a user-friendly mobile application or computer software. These findings contribute innovative ideas for enhancing the intelligent and energy-efficient operation of fresh air systems.
author2 Energy Research Institute @ NTU (ERI@N)
author_facet Energy Research Institute @ NTU (ERI@N)
Zhang, Miao
Liu, Junjie
Liu, Xinyu
Zhang, Xin
format Article
author Zhang, Miao
Liu, Junjie
Liu, Xinyu
Zhang, Xin
author_sort Zhang, Miao
title Evaluation and prediction of fibrous filters' operating performance in residential fresh air system
title_short Evaluation and prediction of fibrous filters' operating performance in residential fresh air system
title_full Evaluation and prediction of fibrous filters' operating performance in residential fresh air system
title_fullStr Evaluation and prediction of fibrous filters' operating performance in residential fresh air system
title_full_unstemmed Evaluation and prediction of fibrous filters' operating performance in residential fresh air system
title_sort evaluation and prediction of fibrous filters' operating performance in residential fresh air system
publishDate 2024
url https://hdl.handle.net/10356/179022
_version_ 1806059948855001088