Impact of outdoor PM2.5 on natural ventilation usability in California’s nondomestic buildings

Martins, Nuno R.; Graça, Guilherme Carrilho da

doi:10.1016/j.apenergy.2016.12.103

Cited by 66 publications

(29 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, Martins and Carrilho da Graça developed a two-stage methodology of increasing complexity to study the impact of airborne particle pollution on NV potential of office buildings located in Europe, US and Asia respectively [35][36][37]. This methodology first quantifies the number of hours deemed suitable for NV purposes as those occurrences when outdoor temperatures range from 10 to 26°C and outdoor PM2.5 concentration is lower than the geographically relevant annual threshold shown in Table 2.…”

Section: Previous Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Natural ventilation potential for residential buildings in a densely built-up and highly polluted environment. A case study

Costanzo

Yao

et al. 2019

Renewable Energy

View full text Add to dashboard Cite

The application of Natural Ventilation (NV) as a measure to improve comfort conditions in transition and summer periods has been a topic of research on the spotlight for years. However, there is a lack of knowledge about how the combined effect of a dense urban layout with high pollutant concentrations may affect its potential. This paper addresses this gap by running detailed thermal simulations for a typical apartment flat located in the Yuzhong district of Chongqing city (China) using a holistic approach that makes use of: i) wind pressure coefficients on building facades from urban-scale CFD simulations, ii) hourly measured values of PM2.5 concentrations and weather variables and iii) indoor environment measurements for validation purposes. Scenario analysis revealed the average amount of air change rates achievable in a year varies from 8 to 15 ACH according to the windows orientation. These figures drop down to around 2 ACH when taking into account reduced windows opening time when outdoor PM2.5 concentrations are too high. The resulting natural ventilation potential of the case study decreases from 4234 hours when outdoor pollution is neglected to 2707 and 529 hours when considering the exposure thresholds set by the Chinese government and the WHO respectively.

show abstract

Section: Previous Studiesmentioning

confidence: 99%

“…PM2.5 limits according to different regulatory bodiesAmong the (quite few) approaches found in the literature, the one proposed in refs [35][36][37]. appears the most detailed in dealing with the problem of determining the NV potential reductions due to outdoor pollution.…”

mentioning

confidence: 99%

Natural ventilation potential for residential buildings in a densely built-up and highly polluted environment. A case study

Costanzo

Yao

et al. 2019

Renewable Energy

View full text Add to dashboard Cite

show abstract

“…FPM and CPM mixed in the outdoor air can increase the indoor PM concentration by infiltration and natural ventilation [ 8 ]. Likewise, the indoor FPM and CPM formed by various factors contribute to the increase in the indoor PM concentration.…”

Section: Introductionmentioning

confidence: 99%

Distribution Characteristics of Indoor PM2.5 Concentration Based on the Water Type and Humidification Method

Park

Seo

Lee

2020

IJERPH

View full text Add to dashboard Cite

With the industrialization and rapid development of technology that can measure the concentration of pollutants, studies on indoor atmosphere assessment focusing on occupants have been recently conducted. Pollutants that worsen indoor atmosphere include gaseous and particulate matter (PM), and the effects and diffusion characteristics that influence indoor atmosphere vary depending on the indoor and outdoor concentration. White dust is a PM generated from minerals in water used for humidifiers during winter. Therefore, studies on the impact of white dust on human health and its size distribution are being actively conducted. However, since the indoor PM concentration varies depending on the humidification method and water type used, relevant studies are needed. Accordingly, this study examined the change in the PM2.5 concentration and relative humidity on the basis of water types and humidification method. It was found that the indoor PM2.5 concentration varied from 16 to 350 ug/m3, depending on the water types used for an ultrasonic humidifier. Conversely, when using a natural evaporative humidifier, white dust did not increase the indoor PM2.5 concentration, regardless of the mineral content of the water used. Considering both humidification ability and continuous humidifier use indoors, water purifier with nano-trap filters must be utilized for ultrasonic humidifiers.

show abstract

“…This leads to a vicious cycle of increased urban emissions of heat, pollutants, and greenhouse gases and an associated increase in energy demand. On the other hand, natural ventilation of buildings provides a sustainable way to cool the indoor environment and reduce building energy consumption, but its use is challenging in urban areas due to the heat island, reduced wind speeds, air pollution and noise (Ghiaus, Allards, Santanamouris, Georgakis and Nicol, 2006;Martins and Carrilho da Graça, 2017).…”

Section: Introductionmentioning

confidence: 99%

Natural ventilation in cities: the implications of fluid mechanics

Jooho

Fan

Lin

et al. 2018

Building Research & Information

View full text Add to dashboard Cite

Impact of outdoor PM2.5 on natural ventilation usability in California’s nondomestic buildings

Cited by 66 publications

References 60 publications

Natural ventilation potential for residential buildings in a densely built-up and highly polluted environment. A case study

Natural ventilation potential for residential buildings in a densely built-up and highly polluted environment. A case study

Distribution Characteristics of Indoor PM2.5 Concentration Based on the Water Type and Humidification Method

Natural ventilation in cities: the implications of fluid mechanics

Contact Info

Product

Resources

About