|Autors: Sofronova, D. A., Angelova, R. A., Sofronov, Y. P., Ivanova, M.|
Title: Measuring the Parameters of the Microenvironment under Protective Face Masks
Keywords: face masks, respirators, CO2 concentration, thermophysiological comfort
Abstract: Face masks and respirators are used to limit the spread of viruses in conditions of a pandemic. However, their use provokes an impediment to the heat 3and mass transfer processes from the face of the wearer to the environment. A microzone is formed between the face and the mask/respirator, which has different air temperature and relative humidity than the environment. The microzone is supposed to have a higher concentration of carbon dioxide (CO2) that could have an adverse effect on human physical and physiological processes. The aim of the paper is to present a measurement of the parameters of the microzone (air temperature, relative humidity and CO2 concentration) under three types of respirators using a specially designed measuring device. Two types of activities are tested: sitting at a desk and slow walking to simulate the wearing of a face mask in the indoor environment (working places, shops, means of transport). The obtained results strongly show the highest levels of CO2.
Вид: публикация в национален форум с межд. уч., публикация в реферирано издание, индексирана в Scopus и Web of Science