Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Protecting building occupants against the inhalation of outdoor-origin aerosols
https://orcid.org/0000-0002-7676-9292
Abstract During normal operations, buildings can protect their occupants from outdoor airborne particle hazards of all types, including airborne pollutants. A long-term international research effort has advanced our knowledge of building protection physics. Recently we have developed an operationally efficient, regional-scale methodology - Regional Shelter Analysis - to account for both building protection effects and the typical distribution of people in and among buildings. To provide input to this capability, we estimate here the degree of protection afforded by the currently existing US building stock. We first assemble and summarize the published literature relevant to indoor particle losses including (a) deposition to indoor surfaces, (b) losses that occur when particles penetrate through the building envelope, and (c) heating, ventilation and air conditioning (HVAC) system filtration efficiencies as well as general building operating conditions. Building protection against inhaling particulate hazards varies strongly, by orders of magnitude, according to particle size, airborne particle loss rate, and to a lesser extent building use (occupancy). Protection increases modestly as particle size increases from 0.1 to 1 μm and significantly as particle size increases from 1 to 10 μm. Model results are placed in context with previously reported measurements. Suggestions for future work, including enhanced validation datasets are provided.
Highlights We estimate the protection US buildings provide against airborne particulate hazards. We compile published deposition, penetration, filtration, and building operation data. Protection varies widely by occupancy type, particle size, and airborne loss rate. Variability within a given building type is similar to variability between different types. Results are placed in context with previously reported measurements.
Protecting building occupants against the inhalation of outdoor-origin aerosols
https://orcid.org/0000-0002-7676-9292
Abstract During normal operations, buildings can protect their occupants from outdoor airborne particle hazards of all types, including airborne pollutants. A long-term international research effort has advanced our knowledge of building protection physics. Recently we have developed an operationally efficient, regional-scale methodology - Regional Shelter Analysis - to account for both building protection effects and the typical distribution of people in and among buildings. To provide input to this capability, we estimate here the degree of protection afforded by the currently existing US building stock. We first assemble and summarize the published literature relevant to indoor particle losses including (a) deposition to indoor surfaces, (b) losses that occur when particles penetrate through the building envelope, and (c) heating, ventilation and air conditioning (HVAC) system filtration efficiencies as well as general building operating conditions. Building protection against inhaling particulate hazards varies strongly, by orders of magnitude, according to particle size, airborne particle loss rate, and to a lesser extent building use (occupancy). Protection increases modestly as particle size increases from 0.1 to 1 μm and significantly as particle size increases from 1 to 10 μm. Model results are placed in context with previously reported measurements. Suggestions for future work, including enhanced validation datasets are provided.
Highlights We estimate the protection US buildings provide against airborne particulate hazards. We compile published deposition, penetration, filtration, and building operation data. Protection varies widely by occupancy type, particle size, and airborne loss rate. Variability within a given building type is similar to variability between different types. Results are placed in context with previously reported measurements.
Protecting building occupants against the inhalation of outdoor-origin aerosols
https://orcid.org/0000-0002-7676-9292
Abstract During normal operations, buildings can protect their occupants from outdoor airborne particle hazards of all types, including airborne pollutants. A long-term international research effort has advanced our knowledge of building protection physics. Recently we have developed an operationally efficient, regional-scale methodology - Regional Shelter Analysis - to account for both building protection effects and the typical distribution of people in and among buildings. To provide input to this capability, we estimate here the degree of protection afforded by the currently existing US building stock. We first assemble and summarize the published literature relevant to indoor particle losses including (a) deposition to indoor surfaces, (b) losses that occur when particles penetrate through the building envelope, and (c) heating, ventilation and air conditioning (HVAC) system filtration efficiencies as well as general building operating conditions. Building protection against inhaling particulate hazards varies strongly, by orders of magnitude, according to particle size, airborne particle loss rate, and to a lesser extent building use (occupancy). Protection increases modestly as particle size increases from 0.1 to 1 μm and significantly as particle size increases from 1 to 10 μm. Model results are placed in context with previously reported measurements. Suggestions for future work, including enhanced validation datasets are provided.
Highlights We estimate the protection US buildings provide against airborne particulate hazards. We compile published deposition, penetration, filtration, and building operation data. Protection varies widely by occupancy type, particle size, and airborne loss rate. Variability within a given building type is similar to variability between different types. Results are placed in context with previously reported measurements.
Protecting building occupants against the inhalation of outdoor-origin aerosols
Dillon, Michael B. (Autor:in) / Sextro, Richard G. (Autor:in) / Delp, W. Woody (Autor:in)
Atmospheric Environment ; 268
30.09.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Building assessment by occupants
| British Library Conference Proceedings | 1994
Outdoor Air Delivery Rates to Occupants and Age of Air
| British Library Online Contents | 1996