A fresh (air) look at ventilation for COVID-19: Estimating the global energy savings potential of coupling natural ventilation with novel radiant cooling strategies

Aviv, Dorit; Chen, Kian Wee; Teitelbaum, Eric; Sheppard, Denon; Pantelic, Jovan; Rysanek, Adam; Meggers, Forrest

doi:10.1016/j.apenergy.2021.116848

Cited by 76 publications

(51 citation statements)

References 38 publications

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“…Our analyses of different scenarios considered 11 overall control points from where data were gathered ( Fig. 11 ), based on the need to assess the environment in more detail ( Ahmed et al, 2021 , Aviv et al, 2021 , Matour et al, 2021 ). These points were selected as they have the greatest variations in the magnitude of the velocity of the internal air flow ( Ahmed et al, 2021 , Matour et al, 2021 ).…”

Section: Resultsmentioning

confidence: 99%

“…Hospital recommendations regarding safety during the COVID-19 pandemic were followed when designing the methodology of this study. The alternative paradigm, considered as a parameter of analysis, is the direction and velocity of the local air ( Chen et al, 2019 , Ahmed et al, 2021 , Aviv et al, 2021 ). Consequently, it was found out that the wind velocity in Porto Alegre usually varies between 5 km/h and 10 km/h (1.4 m/s and 2.8 m/s) ( Fig.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Geo-environmental parametric 3D models of SARS-CoV-2 virus circulation in hospital ventilation systems

Zorzi

Neckel

Maculan

et al. 2022

Geoscience Frontiers

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Geo-environmental parametric 3D models of SARS-CoV-2 virus circulation in hospital ventilation systems

Zorzi

Neckel

Maculan

et al. 2022

Geoscience Frontiers

View full text Add to dashboard Cite

show abstract

“…If an infected or suspected person is quarantined in the home, other housemates should keep a safe distance and protect themselves from infection ( Agarwal et al, 2021 ). Dorit et al Aviv et al, (2021) proposed a system that combines a new radiant cooling technology with natural ventilation to increase fresh air delivery into buildings all year while using less energy and improving air quality. Fig.…”

Section: The Role Of Ventilation Systems In the Spread Of Covid-19mentioning

confidence: 99%

A critical review of heating, ventilation, and air conditioning (HVAC) systems within the context of a global SARS-CoV-2 epidemic

Elsaid

Mohamed

Abdelaziz

et al. 2021

Process Safety and Environmental Protection

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The Coronavirus disease (COVID-19) has spread over the world, resulting in more than 225 million patients, and 4.7 million deaths in September 2021. It also caused panic and terror, halted numerous activities, and resulted in the world economy deteriorates. It altered human behavior and compelled people to alter their lifestyles to avoid infection. Air conditioning systems are one of the most important sectors that must be considered because of the pandemic SARS-CoV-2 all over the world. Air is used as a heat transfer medium in heating, ventilation, and air conditioning (HVAC) systems. The air contains a variety of pollutants, viruses, and bacteria, all of which have an impact on and destroy human life. Significantly in summer, people spend more time in air conditioners which results in lower levels of vitamin D and melatonin which may affect the functioning of their immune system and are susceptible to receiving SARS-CoV-2 from other individuals. As an important component of air conditioning and ventilation systems, the air filter plays a significant role. As a result, researchers must work harder to improve its design to prevent the ultra-small particles loaded with COVID-19. This paper contributes to the design of existing HVAC systems in terms of their suitability and impact on the spread of the hybrid SARS-CoV-2 epidemic, as well as efforts to obtain a highly efficient air filter to remove super-sized particles for protection against epidemic infection. In addition, important guideline recommendations have been extracted to limit the spread of the SARS-CoV-2 throughout the world and to get the highest quality indoor air in air-conditioned places.

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“…Especially during times of acceptable outdoor air temperatures, it is sensible to consider natural or even hybrid ventilation (mechanical and natural) supported by radiant cooling. The latter is practical under certain conditions because of the significantly higher thermal capacity of water compared with air, which increases the efficiency of the heat extraction process from the room substantially [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Improving Indoor Air Quality in Classrooms via Wind-Induced Natural Ventilation

Bayoumi

2021

Modelling and Simulation in Engineering

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Student performance in classrooms is related to the indoor environmental quality. High air change rates are necessary to secure an acceptable level of indoor air quality and provide fresh air, which require large amounts of energy and technical installations. Mostly, mechanically supplied air is partially mixed with the return air. In warm climates, the capacity for natural ventilation is not fully exploited in modern buildings. During periods of acceptable outdoor temperatures, buildings need to adapt and employ available free renewable resources, such as wind. In this context, the building form, orientation, and envelope openings are crucial to enable an increased air change rate, user satisfaction, and energy savings. Owing to the difficulty of providing cross-ventilation in buildings with double-loaded corridors, single-sided ventilation is the most common approach. This study investigates the methods to improve the wind-driven air exchange of classrooms in warm climates, where naturally ventilated corridors help increase air movement. This study examines the potential of a set of alternatives within the context of a generic model regarding the pressure distribution, thermal sensation, air velocity, and air change rate. The study suggests that no single opening scenario can be applied to all façades at any time. Each façade requires special treatment. Decisions on natural ventilation need to be made during the early design stages for each façade. It was found that with the aid of low-tech modifications, remarkable increases in air change rates, in some cases up to 14.5 times that of the typical single-sided ventilation case, could be achieved.

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A fresh (air) look at ventilation for COVID-19: Estimating the global energy savings potential of coupling natural ventilation with novel radiant cooling strategies

Cited by 76 publications

References 38 publications

Geo-environmental parametric 3D models of SARS-CoV-2 virus circulation in hospital ventilation systems

Geo-environmental parametric 3D models of SARS-CoV-2 virus circulation in hospital ventilation systems

A critical review of heating, ventilation, and air conditioning (HVAC) systems within the context of a global SARS-CoV-2 epidemic

Improving Indoor Air Quality in Classrooms via Wind-Induced Natural Ventilation

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