Open AccessA simplified analytical model of ultrafine particle concentration within an indoor environment
Author(s) -
Agnese Pini,
Livia Grandoni,
Giovanni Leuzzi,
Paolo Monti,
Annalisa Di Bernardino,
Armando Pelliccioni,
Monica Gherardi,
Giorgio Cattani,
A. Di Bucchianico
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/489/1/012009
Subject(s) - ultrafine particle , particulates , environmental science , indoor air , natural ventilation , indoor air quality , infiltration (hvac) , ventilation (architecture) , air change , differential pressure , environmental engineering , atmospheric sciences , materials science , meteorology , mechanics , composite material , physics , chemistry , nanotechnology , organic chemistry
Exposure to indoor fine and ultrafine particulate matter (PM) has been recognised as a fundamental problem as most people spend over 85% of their time indoor. Experimental data derived from a field campaign conducted in a confined environment have been used to investigate the physical mechanisms governing indoor-outdoor PM exchanges in different operating conditions, e.g. natural ventilation and infiltration. An analytical model based on the mass balance of PM has been used to estimate indoor fine and ultrafine PM concentration. Indoor-outdoor concentration ratio, penetration factor and air exchange rate have been estimated and related to the differential pressure measured at the openings.