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Residential building ventilation in situations with outdoor PM2.5 pollution

Liu, Sumei ; Song, Rui ; Zhang, Tengfei (Tim)

Building and environment, 2021-09, Vol.202, p.108040, Article 108040 [Periódico revisado por pares]

Oxford: Elsevier Ltd

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  • Título:
    Residential building ventilation in situations with outdoor PM2.5 pollution
  • Autor: Liu, Sumei ; Song, Rui ; Zhang, Tengfei (Tim)
  • Assuntos: Air quality ; Buildings ; Carbon dioxide ; Cooking ; Energy consumption ; Energy costs ; Filtration ; Heat recovery ; Heat recovery systems ; Indoor air pollution ; Indoor air quality ; Indoor environments ; Mechanical ventilation ; Operating costs ; Organic compounds ; Particulate emissions ; Particulate matter ; PM2.5 ; Pollution ; Residential areas ; Residential building ; Residential buildings ; Software ; Ventilation ; VOCs ; Volatile organic compounds
  • É parte de: Building and environment, 2021-09, Vol.202, p.108040, Article 108040
  • Descrição: Affordable ventilation of residential buildings in situations with outdoor PM2.5 pollution is a challenge. This investigation used the validated EnergyPlus software program to model ventilation performance in a newly constructed residential apartment in five different climate zones in China. The evaluated ventilation modes were natural ventilation, balanced mechanical ventilation, and hybrid ventilation, together with indoor particle filtration. Both indoor-generated particles due to cooking and ventilation-drawn particles from the outdoor environment were considered. Different heat recovery modes for mechanical ventilation were also compared. The evaluated parameters included indoor CO2 (carbon dioxide), PM2.5 (fine particulate matter), formaldehyde, and TVOC (total volatile organic compound) concentrations, energy consumption, and operating costs. The natural ventilation mode was found to be the cheapest, but it may provide an insufficient ventilation rate for 27%–79% of the occupied time. Mechanical ventilation can ensure good indoor air quality continuously, but the associated utility cost may be more than twice that for natural ventilation. Indoor particulate filtration should be utilized in situations with severe outdoor PM2.5 pollution. Heat recovery is not recommended in residential buildings due to the high initial investment cost at present. The least energy-consuming ventilation mode for residential buildings with maximum potential to use natural ventilation is recommended. •Three ventilation modes for homes in five climate zones were compared.•The most acceptable ventilation modes were identified.•Indoor PM2.5, CO2, formaldehyde, and VOC concentrations were considered together.•Both energy consumption and operating utility costs were evaluated.•Heat recovery was evaluated in terms of both energy saving and payback period.
  • Editor: Oxford: Elsevier Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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