Energy efficient ventilation and indoor air quality in the context of COVID-19 - A systematic review

Moghadam, Talie Tohidi; Ochoa, Carlos Ernesto; Zambrano, Mariana; Bruton, Ken; O’Sullivan, Dominic

doi:10.1016/j.rser.2023.113356

Cited by 14 publications

(10 citation statements)

References 106 publications

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“…A recently proposed approach is natural ventilation [19], commonly used to achieve energy savings in buildings, but the opening of windows leads to an inflow of pollutants from outdoor air, and countermeasures are required for their removal. Mechanical ventilation is the most studied by scientists, as is shown in a systematic review carried out in [15] on published research papers from 2020 to 2022, which highlights that 65.6% of the papers focused on this mode of ventilation. Concluding the above, it can be said that interest in one of the areas of either indoor air quality or energy efficiency increases depending on the crisis that humanity is going through.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have taken into consideration different strategies to achieve acceptable indoor air quality by varying the ventilation rates based on different parameters. Some of the most common approaches are demand-controlled ventilation strategies, the majority of which are based on carbon dioxide concentrations [15][16][17][18], but as mentioned previously, a varied range of pollutants can be found in the indoor environment. Similar strategies are considered by other studies [15] but with a focus on energy-saving costs rather than ensuring indoor air quality, in order to minimize the costs of building operation.…”

Section: Introductionmentioning

confidence: 99%

“…The COVID-19 pandemic, during which people were practically stuck inside, strongly emphasized the need to pay more attention to and rethink strategies regarding the insurance of adequate indoor air quality (IAQ) with optimal energy consumption [4,5,10,[13][14][15][16]19]. The scientific community is looking for solutions to remove the accumulation of indoor pollutants and minimize the risk of infection through ventilation (mechanical or hybrid [15,20]), actions that inevitably lead to an increase in energy consumption.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Relationship between Mechanical Ventilation, Indoor Air Quality Classes, and Energy Classes in a Romanian Context

Vasile,

Iordache,

Radu

et al. 2024

Atmosphere

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Nowadays, indoor air quality (IAQ) and the energy performance of buildings are two main scientific and technical challenges because they are in direct connection with human health and the depletion of energy resources. In this study, we analyzed the influence of an outdoor air flow introduced through a mechanical ventilation system, focusing on the two aforementioned topics. A standardized ventilation rate (25 m3/h/person) led to an increase in the indoor O3 concentration (from 5 μg/m3 to 50 μg/m3) and, simultaneously, to a decrease in the indoor CO2 concentration (from 2000 mg/m3 to 800 mg/m3), a decrease in the PM2.5 concentration (from 300 μg/m3 to 150 μg/m3), and the maintenance of a constant indoor HCHO concentration. In our study, a new, single indoor air quality index, IIAQ, is proposed. This new index presents different implications: on the one hand, it has the ability to simultaneously take into account several pollutant species, and on the other hand, it can prioritize the ventilation strategy that responds to the extreme values of a certain pollutant. Moreover, indoor air quality classes were elaborated, similar to energy classes. The possibility of using this new index simultaneously with energy consumption may lead to ventilation strategies that are adaptative to dynamic outdoor pollutant concentrations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Relationship between Mechanical Ventilation, Indoor Air Quality Classes, and Energy Classes in a Romanian Context

Vasile,

Iordache,

Radu

et al. 2024

Atmosphere

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“…Organizations and institutions have recognized the importance of ensuring a safe and healthy indoor environment. Indoor air quality (IAQ), adequate ventilation, and monitoring have gained significant attention to safeguard the well-being of individuals in enclosed spaces and it can be useful to control energy consumption [2][3]. HVAC (Heating, Ventilation, and Air Conditioning) systems are indeed one of the primary contributors to energy consumption in buildings.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of public buildings via energy-efficient Z-Wave wireless sensors

Franco,

Crisostomi,

Hammoud

2023

J. Phys.: Conf. Ser.

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Simultaneously managing energy consumption and ensuring a health environment in public shared buildings presents significant challenges. This study explores the use of advanced monitoring techniques and specific Z-Wave sensors to optimize building management systems. The focus is on maintaining air quality, minimizing energy usage, and achieving significant energy savings. Various sensor types are employed, and data collection and processing are performed through a central gateway. The methodology is tested in university buildings, demonstrating the potential for energy savings by dynamically interacting with HVAC systems based on occupancy levels. Effective monitoring and control strategies can contribute to improved energy efficiency and occupant well-being. In specific cases, most notably when the occupancy of rooms is low, energy consumption can be reduced by up to 70%.

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“…This has raised concerns about their energy consumption in addition to noise and thermal discomfort [9], etc. Moghadam et al [10] suggested auxiliary equipment including air purifiers may need to be integrated with the central heating ventilation and air-conditioning (HVAC) system for more effective contaminant control and energy saving.…”

Section: Introductionmentioning

confidence: 99%

Portable Air Purifiers’ Predicted Efficacy in Mitigating Airborne Pathogen Transmission in an Office Room Featuring Mixing Ventilation

Li,

Patel,

Cole

2023

Fluids

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Portable air purifiers have been extensively used to improve indoor air quality and mitigate the transmission of airborne diseases. However, the efficacy of mitigation is strongly affected by the interactions between jet flows of processed air from the air purifiers and the background airflows driven by the ventilation system. Critical factors in this context include the position and capacity of air purifiers and the ventilation rate of the heating ventilation and air-conditioning (HVAC) system. These factors are investigated in this study via computational fluid dynamics (CFD) simulations and the infection probability for different scenarios is quantified using the latest airborne infection predictive model incorporating recent pathological and clinical data for SARS-CoV-2. The results show that the use of air purifiers can significantly reduce the concentration of particulate matter, thus contributing to a generally lower risk of airborne transmission. However, the position of air purifiers affects their overall efficacy remarkably. Comparatively, a central HVAC system is more efficient at removing airborne particles under an equivalent ventilation rate assuming it uses a mixing ventilation scheme.

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Energy efficient ventilation and indoor air quality in the context of COVID-19 - A systematic review

Cited by 14 publications

References 106 publications

The Relationship between Mechanical Ventilation, Indoor Air Quality Classes, and Energy Classes in a Romanian Context

The Relationship between Mechanical Ventilation, Indoor Air Quality Classes, and Energy Classes in a Romanian Context

Monitoring of public buildings via energy-efficient Z-Wave wireless sensors

Portable Air Purifiers’ Predicted Efficacy in Mitigating Airborne Pathogen Transmission in an Office Room Featuring Mixing Ventilation

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