Ventilation performance and indoor air pollutants diagnosis in 21 French low energy homes

Guyot, Gaëlle; Mélois, Adeline; Bernard, Anne‐Marie; Coeudevez, Claire-Sophie; Déoux, Suzanne; Berlin, Sandra; Parent, Enora; Huet, Alexis; Berthault, Sylvain; Romuald, Jobert; Labaume, Damien

doi:10.1080/14733315.2017.1377393

Cited by 8 publications

(5 citation statements)

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“…The healthy IAQ requirements and energy-efficient buildings are a strictly related challenge studied by several researchers [124][125][126][127][128][129]. IAQ monitoring and assessment should be considered as an efficient and effective method to support decision making while designing enhanced living environments in energy-efficient buildings [130]. The increase of IAQ monitoring systems leads to the development of potential energy-efficient methods to promote IAQ.…”

Section: Resultsmentioning

confidence: 99%

Indoor Air Quality Monitoring Systems for Enhanced Living Environments: A Review toward Sustainable Smart Cities

et al. 2020

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Smart cities follow different strategies to face public health challenges associated with socio-economic objectives. Buildings play a crucial role in smart cities and are closely related to people’s health. Moreover, they are equally essential to meet sustainable objectives. People spend most of their time indoors. Therefore, indoor air quality has a critical impact on health and well-being. With the increasing population of elders, ambient-assisted living systems are required to promote occupational health and well-being. Furthermore, living environments must incorporate monitoring systems to detect unfavorable indoor quality scenarios in useful time. This paper reviews the current state of the art on indoor air quality monitoring systems based on Internet of Things and wireless sensor networks in the last five years (2014–2019). This document focuses on the architecture, microcontrollers, connectivity, and sensors used by these systems. The main contribution is to synthesize the existing body of knowledge and identify common threads and gaps that open up new significant and challenging future research directions. The results show that 57% of the indoor air quality monitoring systems are based on Arduino, 53% of the systems use Internet of Things, and WSN architectures represent 33%. The CO2 and PM monitoring sensors are the most monitored parameters in the analyzed literature, corresponding to 67% and 29%, respectively.

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Section: Resultsmentioning

confidence: 99%

Indoor Air Quality Monitoring Systems for Enhanced Living Environments: A Review toward Sustainable Smart Cities

et al. 2020

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“…If not cleaned, dust covering the grille flaps decreases airflow, especially for the low openings of the grille [12]. The average in-situ drift of the hygroscopic devices after 9 years of operation is estimated below ± 1.5 %RH and is lower than the announced accuracy of the electronic humidity sensors at installation (± 1.8 %RH) [13].…”

Section: 2humidity Based Demand-controlled Ventilation Systemsmentioning

confidence: 99%

Humidity-Sensitive Demand-Controlled Ventilation Applied to Multi-Unit Residential Building – Performance and Energy Consumption in Dfb Continental Climate

Sowa¹,

Mijakowski²

2020

Preprint

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A humidity-sensitive demand-controlled ventilation system is known for many years. It has been developed and commonly applied in regions with an oceanic climate. Some attempts were made to introduce this solution in Poland in a much severe continental climate. The article evaluates this system's performance and energy consumption applied in an 8-floor multi-unit residential building, virtual reference building described by the National Energy Conservation Agency NAPE, Poland. The simulations using the computer program CONTAM were performed for the whole hating season for Warsaw's climate. Besides passive stack ventilation that worked as a reference, two versions of humidity-sensitive demand-controlled ventilation were checked. The difference between them lies in applying the additional roof fans that convert the system to hybrid. The study confirmed that the application of demand-controlled ventilation in multi-unit residential buildings in a continental climate with warm summer (Dfb) leads to significant energy savings. However, the efforts to ensure acceptable indoor air quality require hybrid ventilation, which reduces the energy benefits. It is especially visible when primary energy use is analyzed.

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“…1,3,6,7 Statistical analysis of such large-scale measurements can then help to determine the influence of building and occupant characteristics. For example, differences have been observed between apartments and houses, 6 ventilation systems, [8][9][10][11] ventilation rates, 1,6,[12][13][14] or dwellings with gas cookers, 3 renovations, 15 smokers or even the additional emissions associated with the storage of paints and cleaning materials within attached garages. 1 Significantly, these studies have indicated the influence upon IAQ of occupancy and human activity, 1,16,17 the presence of indoor sources of pollutants, 3,10,18 and ventilation rates.…”

Section: Introductionmentioning

confidence: 99%

Seasonal variations and the influence of ventilation rates on IAQ: A case study of five low-energy London apartments

Stamp

Burman

Shrubsole

et al. 2021

Indoor and Built Environment

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The indoor air quality (IAQ) of five low-energy London apartments has been assessed through the measurement of 16 key pollutants, using continuous and diffusive methods across heating and non-heating seasons. This case study approach aimed to assess the presence of pollutants within low-energy apartments and to better understand the role of ventilation and seasonal variations in indoor air quality. The results indicate strong seasonal variations, driven by increased natural ventilation rates over the summer monitoring period. A combined metric for indoor and outdoor pollutants ( Itot) suggests that the IAQ in the winter ( Itot = 17.7) is more than twice as bad as that seen in the summer ( Itot = 8.6). Formaldehyde concentrations were lower in the non-heating season, indicating increased ventilation rates more than offset increased off-gassing, in contrast to findings in other studies. However, increased summertime ventilation rates were observed to increase the proportion of outdoor pollutants entering the internal environment. This resulted in higher indoor concentrations of NO2 in the summer than the winter, despite significant reductions in outdoor concentrations. These results demonstrate the impact of ventilation practices upon IAQ, the influence of occupant actions and the complex relationship ventilation rates play in balancing indoor and outdoor sources of air pollution.

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Ventilation performance and indoor air pollutants diagnosis in 21 French low energy homes

Abstract: International audienc

Cited by 8 publications

References 1 publication

Indoor Air Quality Monitoring Systems for Enhanced Living Environments: A Review toward Sustainable Smart Cities

Indoor Air Quality Monitoring Systems for Enhanced Living Environments: A Review toward Sustainable Smart Cities

Humidity-Sensitive Demand-Controlled Ventilation Applied to Multi-Unit Residential Building – Performance and Energy Consumption in Dfb Continental Climate

Seasonal variations and the influence of ventilation rates on IAQ: A case study of five low-energy London apartments

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