Adaptive Wall-Based Attachment Ventilation: A Comparative Study on Its Effectiveness in Airborne Infection Isolation Rooms with Negative Pressure

Zhang, Ying; Han, Ou; Li, Angui; Hou, Li’an; Olofsson, Thomas; Zhang, Linhua; Lei, Wenjun

doi:10.1016/j.eng.2020.10.020

Cited by 29 publications

(21 citation statements)

References 49 publications

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“…WAV had advantages of high ventilation efficiency and low draft sensation [ 44 ]. In addition, WAV could reduce the contaminant concentration by 15%–47% than ceiling air supply or upper sidewall air supply, indicating the potential of WAV in virus spread control and air quality improvement [ 63 ].…”

Section: Categories Of Different Ventilation Modesmentioning

confidence: 99%

“…As it could continuously provide fresh air to personnel area, a strong pollutant removal efficiency was obtained. Compared with ceiling air supply, WAV could reduce pollutant concentration by 15%–47% [ 63 ]. Meanwhile, the negative pressure only appeared around the exhaust port, which was applicable to the isolation ward.…”

Section: Impacts On Thermal Comfort Air Quality and Virus Spread Controlmentioning

confidence: 99%

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A review of different ventilation modes on thermal comfort, air quality and virus spread control

Fan

Wang

et al. 2022

Building and Environment

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In the era of Corona Virus Disease 2019 (COVID-19), inappropriate indoor ventilation may turn out to be the culprit of microbial contamination in enclosed spaces and deteriorate the environment. To collaboratively improve the thermal comfort, air quality and virus spread control effect, it was essential to have an overall understanding of different ventilation modes. Hence, this study reviewed the latest scientific literature on indoor ventilation modes and manuals of various countries, identified characteristics of different ventilation modes and evaluated effects in different application occasions, wherefore to further propose their main limitations and solutions in the epidemic era. For thermal comfort, various non-uniform ventilation modes could decrease the floor-to-ceiling temperature difference, draft rate or PPD by 60%, 80% or 33% respectively, or increase the PMV by 45%. Unsteady ventilation modes (including intermittent ventilation and pulsating ventilation) could lower PPD values by 12%–37.8%. While for air quality and virus spread control, non-uniform ventilation modes could lower the mean age of air or contaminants concentration by 28.3%–47% or 15%–47% respectively, increase the air change efficiency, contaminant removal effectiveness or protection efficiency by 6.6%–10.4%, 22.6% or 14%–50% respectively. Unsteady ventilation mode (pulsating ventilation) could reduce the peak pollutant concentration and exposure time to undesirable concentrations by 31% and 48% respectively. Non-uniform modes and unsteady modes presented better performance in thermal comfort, air quality and virus spread control, whereas relevant performance evaluation indexes were still imperfect and the application scenarios were also limited.

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Section: Categories Of Different Ventilation Modesmentioning

confidence: 99%

Section: Impacts On Thermal Comfort Air Quality and Virus Spread Controlmentioning

confidence: 99%

A review of different ventilation modes on thermal comfort, air quality and virus spread control

Fan

Wang

et al. 2022

Building and Environment

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show abstract

“…Liu Yanxiang et al used the simulation software COMSOL to simulate four different air distribution in the ward to find that the upper and lower air distribution could reduce the probability of mutual infection of patients based on the influence of bacteria distribution on indoor air quality [ 21 ]. Ying Zhang et al proposed the application of adaptive wall-mounted ventilation and made a comprehensive evaluation from the aspects of pollutant diffusion, removal efficiency, thermal comfort and operating cost [ 22 ]. Li Angui et al proposed put forward that the air distribution of single slit type outlet attached the vertical wall with deflector as the recommended for the negative pressure isolation ward.…”

Section: Design For Ventilation and Air Conditioning System In Wardsmentioning

confidence: 99%

Design characteristics on the indoor and outdoor air environments of the COVID-19 emergency hospital

Chen

Lei

et al. 2022

Journal of Building Engineering

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“…Main findings have proved that low energy consumption, IAQ, efficacy of different air flow patterns and behaviour and self-reported occupant wellbeing can be obtained by integrating building physics improvement and controlled mechanical ventilation systems [19][20][21][22]. Moreover, the current standards and provisions imposed by WHO, ASHRAE, RHEVA, AICARR and ISS, suggest that heating, ventilation and air conditioning plants (HVAC) must be working 24 hours a day and continuously 7 days a week, without air recirculation with possible night attenuation and for the non-occupation periods [23][24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Sustainability and Wellbeing in Healthcare Facilities. An Investigation Inside a Historic Hospital

Balocco¹,

Petrone²

2021

IJDNE

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Adaptive Wall-Based Attachment Ventilation: A Comparative Study on Its Effectiveness in Airborne Infection Isolation Rooms with Negative Pressure

Cited by 29 publications

References 49 publications

A review of different ventilation modes on thermal comfort, air quality and virus spread control

A review of different ventilation modes on thermal comfort, air quality and virus spread control

Design characteristics on the indoor and outdoor air environments of the COVID-19 emergency hospital

Sustainability and Wellbeing in Healthcare Facilities. An Investigation Inside a Historic Hospital

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