Evaluation of a Polyester Filter and UV Light (PFUV) Dehumidifier to Improve Indoor Environmental Quality: Preliminary Results
Older residential dwellings in New Zealand frequently suffer from poor indoor environmental quality (IEQ) due to an ageing housing stock. Recent New Zealand surveys indicated around 50% of children live in houses that do not meet acceptable standards for thermal comfort. Children in these houses fre...
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| Veröffentlicht in: | Sustainability 2022-04, Vol.14 (8), p.4504 |
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| creator | Al-Rawi, Mohammad Farid, Mohammed M. Jones, Rhys J. Louie, Ken |
| description | Older residential dwellings in New Zealand frequently suffer from poor indoor environmental quality (IEQ) due to an ageing housing stock. Recent New Zealand surveys indicated around 50% of children live in houses that do not meet acceptable standards for thermal comfort. Children in these houses frequently experience respiratory conditions caused by dampness and mould during winter. New regulatory standards requiring a fixed heating source in the main living room of rental houses can increase rents and may result in the heating source not being utilized. This study evaluates an alternative low-cost portable air filter/sterilizer (PFUV) dehumidifier device for improving IEQ within the building envelope using Ultraviolet Germicidal Irradiation (UVGI) and a polyester filter (dual-10 30/30). This paper compares the effectiveness of the PFUV dehumidifier device and a conventional heat pump in terms of measured particulate matters as well as fungal profiles using Potato Dextrose Agar (PDA) plates. The PFUV dehumidifier successfully reduced the relative humidity to within a healthy range of (44–49%) compared to not running the device (54–60%), thereby reducing the suitability of the environment for mould growth. Additionally, the PFUV device achieved a reduction in average particulate matter (PM2.5) to within the range of 0.16 to 0.53 µg/m³ compared to the range of 1.06 to 2.42 µg/m³ before using the device. |
| doi_str_mv | 10.3390/su14084504 |
| format | Article |
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Recent New Zealand surveys indicated around 50% of children live in houses that do not meet acceptable standards for thermal comfort. Children in these houses frequently experience respiratory conditions caused by dampness and mould during winter. New regulatory standards requiring a fixed heating source in the main living room of rental houses can increase rents and may result in the heating source not being utilized. This study evaluates an alternative low-cost portable air filter/sterilizer (PFUV) dehumidifier device for improving IEQ within the building envelope using Ultraviolet Germicidal Irradiation (UVGI) and a polyester filter (dual-10 30/30). This paper compares the effectiveness of the PFUV dehumidifier device and a conventional heat pump in terms of measured particulate matters as well as fungal profiles using Potato Dextrose Agar (PDA) plates. The PFUV dehumidifier successfully reduced the relative humidity to within a healthy range of (44–49%) compared to not running the device (54–60%), thereby reducing the suitability of the environment for mould growth. Additionally, the PFUV device achieved a reduction in average particulate matter (PM2.5) to within the range of 0.16 to 0.53 µg/m³ compared to the range of 1.06 to 2.42 µg/m³ before using the device.</description><identifier>ISSN: 2071-1050</identifier><identifier>EISSN: 2071-1050</identifier><identifier>DOI: 10.3390/su14084504</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Aging ; Air filters ; Asthma ; Bacteria ; Building envelopes ; Children ; Dehumidification ; Dwellings ; Electricity ; Environmental quality ; Evaluation ; Fungi ; Heat ; Heat exchangers ; Heat pumps ; Heating ; Housing ; Humidity ; Indoor environments ; Investigations ; Irradiation ; Low income groups ; Moisture content ; Mold ; Mold growths ; Particulate matter ; Portable equipment ; Potatoes ; Quality standards ; Radiation ; Relative humidity ; Ultraviolet radiation ; Ventilation ; VOCs ; Volatile organic compounds</subject><ispartof>Sustainability, 2022-04, Vol.14 (8), p.4504</ispartof><rights>2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). 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Recent New Zealand surveys indicated around 50% of children live in houses that do not meet acceptable standards for thermal comfort. Children in these houses frequently experience respiratory conditions caused by dampness and mould during winter. New regulatory standards requiring a fixed heating source in the main living room of rental houses can increase rents and may result in the heating source not being utilized. This study evaluates an alternative low-cost portable air filter/sterilizer (PFUV) dehumidifier device for improving IEQ within the building envelope using Ultraviolet Germicidal Irradiation (UVGI) and a polyester filter (dual-10 30/30). This paper compares the effectiveness of the PFUV dehumidifier device and a conventional heat pump in terms of measured particulate matters as well as fungal profiles using Potato Dextrose Agar (PDA) plates. The PFUV dehumidifier successfully reduced the relative humidity to within a healthy range of (44–49%) compared to not running the device (54–60%), thereby reducing the suitability of the environment for mould growth. Additionally, the PFUV device achieved a reduction in average particulate matter (PM2.5) to within the range of 0.16 to 0.53 µg/m³ compared to the range of 1.06 to 2.42 µg/m³ before using the device.</description><subject>Aging</subject><subject>Air filters</subject><subject>Asthma</subject><subject>Bacteria</subject><subject>Building envelopes</subject><subject>Children</subject><subject>Dehumidification</subject><subject>Dwellings</subject><subject>Electricity</subject><subject>Environmental quality</subject><subject>Evaluation</subject><subject>Fungi</subject><subject>Heat</subject><subject>Heat exchangers</subject><subject>Heat pumps</subject><subject>Heating</subject><subject>Housing</subject><subject>Humidity</subject><subject>Indoor environments</subject><subject>Investigations</subject><subject>Irradiation</subject><subject>Low income groups</subject><subject>Moisture content</subject><subject>Mold</subject><subject>Mold growths</subject><subject>Particulate matter</subject><subject>Portable equipment</subject><subject>Potatoes</subject><subject>Quality standards</subject><subject>Radiation</subject><subject>Relative humidity</subject><subject>Ultraviolet radiation</subject><subject>Ventilation</subject><subject>VOCs</subject><subject>Volatile organic compounds</subject><issn>2071-1050</issn><issn>2071-1050</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpNUE1LAzEUDKJgqb34CwJeVFhNNh9NvElttVCwiu11yW6zNmU3qUm20Iu_3ZQK-i7zGIb3ZgaAS4zuCJHoPnSYIkEZoiegl6MhzjBi6PTffg4GIWxQGkKwxLwHvsc71XQqGmehq6GCc9fsdYjaw4lpDqDsCi6WcGY-1xFezyeL5Q180uuuNStTmySIDk7brXc7Dad25ZyHY7sz3tlW26ga-NapxsT9A5x73ZjWWOX38F2HronhApzVqgl68It9sJiMP0Yv2ez1eTp6nGVVLlnMmBZalJpRzBXCFeNEclUizusqRSYUCymGNJGa0lpWrCZDKnCJpdZU5qUgfXB1vJt8fnUpX7FxnbfpZZFzRlDOsRgm1e1RVXkXgtd1sfWmTXYLjIpDxcVfxeQHmiBtdQ</recordid><startdate>20220401</startdate><enddate>20220401</enddate><creator>Al-Rawi, Mohammad</creator><creator>Farid, Mohammed M.</creator><creator>Jones, Rhys J.</creator><creator>Louie, Ken</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><scope>4U-</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>COVID</scope><scope>DWQXO</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><orcidid>https://orcid.org/0000-0002-5794-6871</orcidid><orcidid>https://orcid.org/0000-0001-8921-1215</orcidid></search><sort><creationdate>20220401</creationdate><title>Evaluation of a Polyester Filter and UV Light (PFUV) Dehumidifier to Improve Indoor Environmental Quality: Preliminary Results</title><author>Al-Rawi, Mohammad ; 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| subjects | Aging Air filters Asthma Bacteria Building envelopes Children Dehumidification Dwellings Electricity Environmental quality Evaluation Fungi Heat Heat exchangers Heat pumps Heating Housing Humidity Indoor environments Investigations Irradiation Low income groups Moisture content Mold Mold growths Particulate matter Portable equipment Potatoes Quality standards Radiation Relative humidity Ultraviolet radiation Ventilation VOCs Volatile organic compounds |
| title | Evaluation of a Polyester Filter and UV Light (PFUV) Dehumidifier to Improve Indoor Environmental Quality: Preliminary Results |
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